Intake duty
Design and peak flow, minimum operating water level, approach velocity, screens, sediment, debris, biofouling, redundancy and pump suction conditions define whether seawater can be abstracted reliably.
Knowledge / Water infrastructure and marine utilities
Water infrastructure and marine utilities.
Service-reservoir maintenance starts with isolation, cleaning, condition assessment and the boundary between minor repair and structural work. Intakes and outfalls combine hydraulic systems, subsea structures and environmental controls. Their evidence follows the water path, temporary installation states and receiving-water response.
The water path is the asset boundary
Design flow starts offshore, crosses the shore, passes through pumping and treatment, and returns through an outfall whose performance depends on both diffuser hydraulics and the receiving sea.
Reservoir maintenance: scope and supplier entry
Portsmouth Water's planned framework and Welsh Water's DCWW2115 competition use different entry routes and repair boundaries.
| Decision | Portsmouth Water | Welsh Water / DCWW2115 |
|---|---|---|
| Procurement stage | Planning notice published 13 October 2026; formal notice expected 30 October. A submission deadline has not been published. Project record |
Conditions-of-participation submissions close on 2 November 2026 at 23:59 UTC. The proposed procedure then has two ITT rounds, with possible negotiation and down-selection. Project record |
| Supplier entry | Selection is through UVDB categories 4.1.6 and 4.1.6.2. The notice asks suppliers to register or update their existing category details. | Use the named DCC eSourcing portal to register, express interest, download the attachments and submit the response electronically. The participation documents determine the detailed selection requirements. |
| Repair boundary | Inspection, cleaning, condition assessment and remedial work cover about 35 concrete service reservoirs and a 135 ML raw-water reservoir. Detailed repair specifications and site schedules remain to be issued. | Cleaning, disinfection, inspection and minor repairs cover about 828 potable-water tanks. Exclusions include structural modifications, surrounding embankments, hydraulic-performance or capacity changes, and work requiring a Reservoirs Act Panel Engineer. |
| Work allocation | Two partners are proposed. Planned and emergency minor works up to GBP 100,000 use direct allocation; larger works use a mini-competition. Performance, availability, programming and geography affect allocation. | Two suppliers are proposed. Routine allocation considers geography, capacity, workload and performance; higher-value or complex requirements may use a mini-competition. The framework documents set the detailed mechanism. |
Sources: Portsmouth Water's official procurement history and Welsh Water's official procurement history. Full qualification, bidding and framework attachments have not been obtained.
Documents to obtain
For Portsmouth Water, the next notice and issued site schedules need to establish submission requirements, isolation arrangements and repair specifications. For Welsh Water, the participation attachments and referenced PNL 810 standard govern the next response and cleaning requirements. Both routes still require the issued terms for call-off workload, payment, security and acceptance.
Portsmouth Water: isolation and allocation · Welsh Water: maintenance exclusions
Conveyance duty
Route bathymetry, geotechnics, surge and vacuum, external pressure, buoyancy, joint capacity, crossings, landfall restraint, protection and inspection access govern the pipe or tunnel between sea and plant.
Discharge duty
Effluent flow, density, salinity, temperature and chemistry meet ambient currents, stratification and bathymetry through an outfall whose ports must distribute flow and avoid recirculation back to the intake.
Intake basis
Intake performance starts before the pump curve
The World Bank's desalination technical paper identifies impingement, entrainment and the chemistry of concentrate discharge as direct marine effects. Those issues are set by siting and hydraulic choices, not corrected by a plant capacity figure.
Location and hydraulics
Fix water depth across tide and surge, wave and current exposure, seabed mobility, suspended sediment, intake submergence, approach velocity and the hydraulic grade through screens and pumps.
Ecology and debris
Define screen opening and velocity, fish-return or exclusion measures, seasonal larvae and plankton exposure, jellyfish and weed loading, trash management, chlorination or other biofouling control, and monitoring points.
Operability
Test single-line and reduced-level operation, redundancy, isolation, dewatering, access for screen cleaning, sediment removal, diver or ROV inspection, spares and restart after a blocked or tripped intake.
Temporary works
Temporary installation states can govern the permanent design
A pipe that is adequate when buried and full can be vulnerable while empty, afloat, partly flooded or suspended between supports. The installation analysis has to follow the actual fabrication, tow, pull, lowering, flooding, backfilling and connection sequence.
Pipe-string control
Record jointing and non-destructive examination, launch geometry, towing arrangement, weather limits, temporary closures, ballast or weight units, allowable bend radius and contingency tow or refuge positions.
Controlled submergence
Check flooding sequence, trapped air, differential head, tensile load, local buckling, ovalisation, seabed contact and the behaviour of temporary floats, anchors and lifting points at each stage.
Route acceptance
Close trench depth, bedding, crossings, freespan, backfill, rock or mattress protection, landfall restraint, diffuser orientation and coordinates through survey, inspection and reconciled as-built drawings.
Outfall hydraulics
A diffuser is designed against a critical envelope, not an average sea
EPA's ocean-discharge criteria require attention to discharge rate, concentration, persistence, marine life and alternative locations or methods. The IAHR/IWA outfall committee treats diffuser hydraulics, construction and environmental response as one specialist field. A dilution number is therefore credible only with the discharge and receiving-water cases that produced it.
Discharge envelope
State minimum, normal, peak and start-up flow; salinity, density, temperature, residual chemicals and solids; intermittent cleaning streams; and whether one or several treatment trains are online.
Ambient envelope
Use seasonal density profiles, weak-current and slack-water cases, waves, bathymetry, sensitive receptors, background quality and neighbouring discharges. Check plume trapping, surfacing, seabed interaction and intake recirculation.
Internal distribution
Verify manifold head loss, port flow balance, exit velocity, port spacing and orientation, intrusion or sediment risk, purge conditions, surge and low-flow operation before relying on near-field mixing results.
Acceptance and operation
First flow closes neither construction nor environmental performance
Acceptance should reconcile hydraulic integrity, installed geometry, plant controls and the environmental baseline. After handover, the evidence becomes a time series. Water Corporation's Perth operating report, for example, combines subsea inspection with marine-water and discharge monitoring rather than using production alone as proof of marine performance.
Hydraulic integrity
Pressure or leakage tests, flushing and disinfection where applicable, valve and isolation tests, pump curves, surge events, screen head loss, diffuser-port flow and rated-flow trials need traceable instruments and acceptance limits.
Geometry and condition
As-built bathymetry and coordinates, ROV or diver inspection, landfall and crossing records, protection thickness, freespan, damage, debris and unresolved punch items establish what was actually installed.
Operating series
Track availability, blocked screens, pump and control trips, cleaning, inspection findings, leaks, energy per unit, intake conditions, discharge chemistry, plume or receiving-water results and response to exceedances.
Compare scope, installation and operation separately
The project archive preserves package boundaries and dated field evidence; the performance archive carries commissioning and operating records where a usable observation period exists.
Open project records Open performance records Read the utility-interface analysisEvidence standard
Six distinct records from project signal to operating performance
Capacity, coastal location, defined marine scope, physical delivery, first water, acceptance and sustained operation answer different questions. Each conclusion depends on a dated public record for that stage.
A coastal power, water, wastewater, mining, or industrial project has plausible marine exposure. This supports monitoring only; it does not establish a marine package.
An owner, lender, EIA, EPC, procurement, or contractor record names the intake, outfall, tunnel, pipeline, shore crossing, diffuser, dredging, or coastal works.
Dated records show fabrication, trenching, tunnelling, piling, offshore placement, connection, protection, testing, or as-built survey against a defined package.
Water or cooling service traverses a connected route during commissioning. The event proves route continuity, not accepted rated capacity, reliability, or commercial operation.
Signed or attributable records cover hydraulic performance, water quality, power and controls, marine assets, environmental conditions, defects, and owner handover.
A representative period exposes availability, outages, quality, marine monitoring, maintenance, energy use, capacity, and service continuity rather than a single milestone.
Interface register
Minimum evidence needed to compare unlike utility systems
The same six interfaces apply whether the project serves desalination, cooling water, mining supply, wastewater, or an industrial coastal process. An incomplete basis should remain explicit because unlike systems cannot be normalized by assumption.
- Seawater intake
- Alignment, bathymetry, intake head or tower, screens, design velocity, foundation, protection, access, impingement and entrainment controls, and accepted hydraulic condition.
- Landfall and conveyance
- Submarine pipe or tunnel geometry, shore crossing, joints, flotation or pull method, trench and backfill, crossings, corrosion strategy, pressure testing, and as-built position.
- Treatment or cooling interface
- Pretreatment, reverse osmosis or cooling duty, design and accepted flow, quality criteria, redundancy, storage, process tie-ins, and the boundary between marine and plant packages.
- Outfall and return
- Brine, cooling-water or wastewater route, diffuser geometry, mixing-zone basis, installation and test records, neighbouring discharges, and post-start dispersion monitoring.
- Power, pumping and controls
- Pumping stages, elevation and pressure, substations, grid or renewable supply, control and shutdown logic, surge protection, integrated testing, and outage exposure.
- Operation and maintainability
- Access, inspection method, cleaning, spares, condition monitoring, environmental reporting, availability, quality, outage history, maintenance response, and responsibility after handover.
Project stages
Ten projects at different published stages
These records are not a ranking. Finance, scope definition, construction, first flow, commissioning and operation are reported separately because progress in one does not establish another.
Taweelah C
The IPP award and coastal complex justify monitoring; a project-specific cooling-water or marine civil package remains outside the reviewed source record.
Fiji Kinoya and Laucala Bay
Applications for CW02 DBO prequalification closed on 30 September 2026 at 15:00 Fiji time (UTC+12). The published scope retains the existing 2.4-kilometre outfall; invitations to tender were expected in December. The shortlist and complete tender documents remain unconfirmed in the reviewed record.
Aqaba-Amman
The concession and lender process define the programme; financial close, notice to proceed, final marine design and mobilisation remain separate milestones.
Ras Mohaisen
Financial close and under-construction status are public; offshore mobilisation, installed marine assets, testing, first water and accepted capacity require dated evidence.
Casablanca-Settat
Common marine, tunnel and electrical systems are in delivery; physical completion, integrated testing, first water and commercial operation remain open.
Alkimos
Marine piling is complete and tunnelling and diffuser work are active; breakthrough, connections, as-builts and integrated intake-outfall acceptance remain outstanding.
SADDN
Desalinated water reached Radomiro Tomic during progressive validation; rated output, all-division service, marine reliability and commercial operation remain unproven publicly.
Hassyan IWP
Block A commissioning is public; the remaining capacity, full intake-outfall acceptance, water quality, marine monitoring and sustained reliability remain separate conclusions.
Singapore Tuas WRP
The 1.8-kilometre nearshore outfall reached substantial completion in August 2023. Plant and network completion, connected hydraulic testing, controlled discharge, effluent compliance and phased operation from 2027 remain open.
South Tarawa
Three outfalls were completed and commissioned, while ADB's later review found only partial progress on access and water-quality outcomes. Current condition, discharge monitoring and operator capacity remain the required follow-up records.
Three category errors distort marine utility progress
Coastal power, desalination, water-transmission and wastewater programmes can contain major marine packages, but the plant headline does not define the offshore work or prove its delivery.
Coastal location is not scope
An IWP, IWPP or coastal power project may reuse an existing intake, use a separate utility owner or have no disclosed offshore package. EWEC's planning material and the Taweelah C record show why project location alone cannot allocate marine work.
Open Taweelah C recordPlant progress is not marine completion
Process-train percentages, financing and an EPC award do not establish installed pipeline length, diffuser placement or landfall acceptance. Older Oman procurement material is useful because it explicitly allocates shared seawater intake and outfall facilities, but it still does not prove present installation.
Read Oman PWP sourceFirst flow is not acceptance
Hassyan, Fiji, Singapore and South Tarawa represent phased commissioning, reuse of an existing outfall, a completed outfall awaiting wider-system start-up and a completed programme with mixed outcome evidence. Each needs a different next record.
Read Tuas outfall briefReports and data
Project records and references
These reports, datasets and source links preserve project dates, quantities, methods and the distinction between award, construction, acceptance and observed performance.
Marine Investment in MENA: From Committed Capital to Working Assets (PDF)
Version 4.0 / Data throughComplete English case investigation of Duqm cargo and capacity, Aqaba revised marine construction and finance, and Jubail contract changes, with original figures and primary evidence.
Global Marine Utility Interface Monitor: July 2026 PDF
Version 2.11 / Data throughDesigned open-access edition with executive findings, calculated figures, the fixed 21-project evidence table, method, limitations, and source register.
Performance records CSV
Structured export of asset-specific commissioning and operating evidence, including the measurement basis, confirmed evidence and unresolved operating outcomes.
MENA marine investment case register: October 2026
Eighteen dated cost, cargo, financing, design and contract observations across three case files, with individual basis and primary source.
Global marine utility interface monitor evidence CSV
Fixed 21-project evidence table used for the July 2026 global marine utility interface monitor.
Source register
Primary owner, authority, lender, contractor and technical references cited by IMWO records, with last checked dates and direct source routes.
Open pageCurrent evidence
Water infrastructure and marine utilities collection
Reservoir maintenance separates cleaning and minor repairs from structural changes. Water infrastructure coverage follows storage assets, pumping, flood drainage and marine utility systems from announced scope through construction, testing and operation; marine-system records retain intake, conveyance, treatment and discharge interfaces.
- Publications
- 62
- Projects
- 44
- Confirmed
- 43
- Regions
- 6
- Change histories
- 26
- Updated
- 5 November 2026
Engineering frame
Technical scope
- System scope and interfaces
- Reservoir isolation, sampling, repair exclusions and pumping interfaces define storage and flood-drainage work. Marine scope requires intake, outfall, tunnel, diffuser, shore crossing and tie-in geometry.
- Construction method
- Follow trenching, tunnelling, cofferdams, tow-out, controlled submergence, offshore installation spreads and shore-side logistics.
- System commissioning
- Separate civil completion from flushing, pressure tests, hydraulic trials, first water and plant integration.
- Environmental performance
- Track discharge quality, thermal or brine plume behaviour, monitoring compliance and sustained operating results.
Current analysis and reports
Aqaba Pipeline Crossings Put Existing Services Inside the Civil Workfront
ADC's 89/A/2026 package combines bridge and culvert structures with protection of existing oil and chemical pipelines. Survey, drainage and pipe-rack installation need a common construction sequence.
1 November 2026 / 3 sourcesGate Adds Storage Ahead of Its Next Loading Jetty
Gate's fourth LNG tank is commissioned. Its fourth jetty remains under construction for expected end-2028 service, leaving storage, gas send-out and vessel loading on different expansion schedules.
1 November 2026 / 3 sourcesAqaba Oil Berth Tender Divides Marine and Operating Scope
ADC's new oil-berth invitation combines marine EPC works with topside engineering, alongside a parallel operator procurement. Pipeline tie-ins and the equipment handover need particular attention before bidders freeze their scope.
31 October 2026 / 3 sourcesAlkimos Completes Its First Intake-to-Tunnel Connection
Water Corporation reports the first permanent intake-to-tunnel connection at Alkimos complete. Excavation continues towards the second intake riser as tunnel boring machines and their support plants leave the site.
30 October 2026 / 3 sourcesNEP Sand-Wave Clearance Moves into November
NEP has extended Hermod R sand-wave clearance to around 30 November. The revised workfront in Block 4 and extended Block 5 sits alongside separately programmed post-lay trenching and rock installation.
30 October 2026 / 3 sourcesNEP Completes Two Wells for Its Expansion-Store Appraisal
NEP has completed its two-well appraisal across CS006 and CS007. The results now inform expansion capacity, well duties and a programme through concept selection, planned 2027 FEED and a planned 2028 investment decision.
30 October 2026 / 4 sourcesCanvey Lake fixes a £1m dredging budget
Castle Point Borough Council is selecting a Canvey Lake dredging contractor against a fixed £1 million budget excluding VAT. Technical quality carries 95% of the score and social value 5%. The material-handling plan will have to accommodate sediment that AGA classifies as non-hazardous but unsuitable for inert landfill.
28 October 2026 / 6 sourcesColintraive and Portavadie: Building the Berth-to-Charger Interface
Colintraive has completed dredging ahead of shore-power civil works. Portavadie has scheduled a slipway closure for widening and dredging. Their different operating arrangements expose the practical handovers between marine construction, temporary services and electrical installation.
25 October 2026 / 5 sourcesPort Ellen dredging links phased harbour access to verification
CMAL reports Phase 3 dredging begun at Port Ellen. Harbour access, excavation, disposal records and surveys connect the marine workfront to existing port users; neither channel acceptance nor terminal completion has been established.
6 September 2026 / 5 sourcesPortsmouth Water plans two maintenance partners across 35 service reservoirs
Portsmouth Water's proposed maintenance framework covers approximately 35 concrete service reservoirs and a 135 ML raw-water reservoir. Two partners would share routine and emergency work, with larger repairs allocated through mini-competition. The history checked on 31 October still contains only the 13 October planning release, which expected a formal notice on 30 October.
31 October 2026 / 5 sourcesWelsh Water opens DCWW2115 participation round for reservoir maintenance
Welsh Water's DCWW2115 conditions-of-participation deadline passed on 2 November 2026 at 23:59 UTC. Its proposed two-supplier framework covers cleaning, disinfection, inspection and minor refurbishment across approximately 828 potable-water tanks, with structural, embankment, hydraulic-performance and capacity changes excluded.
3 November 2026 / 4 sourcesGermany Beck procurement ends after two deadline extensions
City of York Council terminated the Germany Beck flood-alleviation procurement on 30 September 2026 after two deadline extensions. The buyer cites time and funding constraints, additional clarification information and market feedback. The later UK12 notice supersedes the earlier tender dates.
14 October 2026 / 6 sourcesLammebrug ties in-water foundations to a separate control-cable crossing
Boskalis separates the replacement Lammebrug basement, support piles, bank sheets and underwater operating-cable crossing into different workfronts. Planned passage restrictions are not evidence of completed foundations or bridge commissioning.
5 September 2026 / 4 sourcesAgate wins Absecon outfall and beach-access works
USACE Philadelphia District has awarded Agate Construction Co. a USD 19.695 million Absecon Island outfall package. The 27 August announcement identifies seven repair or extension locations in three municipalities and a separate Ventnor vehicle ramp, within the island's coastal storm risk management programme.
1 September 2026 / 3 sourcesAbsecon's outfall repairs reconnect drainage with the engineered beach
A USD 19.695 million Absecon Island award puts stormwater outlets and beach access into the coastal works programme. The engineering interface runs from street-end collection to the seaward discharge, where pipe support, sediment and tide conditions matter alongside the dune profile.
1 September 2026 / 5 sourcesIsland marine delivery depends on logistics, interfaces and operations
Thirteen public island records, current to 14 August 2026, show why contract status alone is a poor proxy for usability: remote supply, live-port constraints, package interfaces, accepted works and operating evidence close on different records.
16 August 2026 / 20 sourcesAfrica marine works sit at different release points
The 17 public Africa project records currently divide into four at approval or financing, two awarded, nine in physical delivery and two in commissioning. Contractors, suppliers and operators need a different primary record at each position.
26 July 2026 / 12 sourcesRabigh 4 completes 600,000 m3/day EPC performance test
SEPCOIII reports that Rabigh 4 completed its EPC performance test at 600,000 m3/day on 19 February 2026, with power use of 2.712 kWh/m3 before photovoltaic offset. SWPC has not published commercial-operation acceptance, and the marine close-out file remains unavailable.
16 August 2026 / 12 sourcesEiffage records a 340 m intake drive at Mamelles
Eiffage recorded a 340 m seawater-intake microtunnel at Dakar's Mamelles desalination plant in July 2025. A February 2026 supervision visit still described the plant as under construction and expected commissioning later in the year. Final brine-discharge installation and marine acceptance remain unpublished.
19 July 2026 / 6 sourcesTaweelah power, desalination and berth interfaces have separate buyers
The same Abu Dhabi industrial coast contains a power project with only cooling-water review in public, an operating 200 MIGD RO plant with a bid-stage marine design trail, and an industrial berth moving from Capesize service toward Newcastlemax. Their buyers, scopes and acceptance histories differ.
19 July 2026 / 9 sourcesHow desalination contracts divide the marine works
Hawar tenders its intake and outfall separately. Algarve keeps both inside a design-build-operate contract, while Alkimos carries tunnels and offshore structures through an alliance. Rosarito's current invitation leaves the marine allocation undisclosed.
18 July 2026 / 11 sourcesFirst water, commissioning, completion, and opening are four different claims
SADDN has produced first water, Hassyan is commissioning in blocks, Tuvalu has handed over named harbour assets, and Nador West Med has completed basic port infrastructure. None of those milestones closes every marine, terminal or operating interface.
15 August 2026 / 12 sourcesSADDN first-water delivery to Radomiro Tomic evidence
The file reviewed through 15 July 2026 establishes Codelco's BOOT authorization, Aguas Horizonte's developer role and Techint's EPC mandate. It defines the submarine system, auxiliary pier, coastal sump, trench blasting, intake and brine-return pipes, coastal energization, intake-tower installation, high-head conveyance, reservoir and independent commissioning assurance. Techint's 23 June account confirms first water at Radomiro Tomic during hydraulic tests and progressive validation. Still absent are accepted continuous flow, representative water-quality results, intake availability, brine-dispersion monitoring, power and pumping reliability, service to the other two mining divisions, final completion and commercial-operation certification.
15 July 2026 / 9 sourcesHassyan IWP Block A marine-system commissioning evidence
Owner statements available on 13 July 2026 confirm Block A commissioning and the published delivery schedule. The project structure and ESIA also define the marine design basis. No independent records establish uptime, product-water compliance, outfall performance, environmental monitoring results, final completion or acceptance of the remaining blocks.
13 July 2026 / 5 sourcesRas Mohaisen sources give 2028, Q4 2029 and 2030 production milestones
Ras Mohaisen has a dated chain from project-agreement signing through EPC award, financial close and ACWA's under-construction classification, but Sharakat's 2028 partial-production and 2030 full-production sequence, ACWA's Q4 2029 PCOD and Lantania's 2025-2029 execution period are not the same milestone. The 3-kilometre offshore scope still needs evidence from marine design through first water and sustained production.
15 July 2026 / 6 sourcesHow to identify marine works inside power and water projects
Casablanca, SADDN, Alkimos, Aqaba-Amman and Hassyan carry confirmed intake, outfall, tunnel, offshore-structure or commissioning scope. Taweelah C remains a watch until owner, EPC or environmental records define the physical coastal utility package.
15 July 2026 / 12 sourcesGlobal Marine Utility Interface Monitor: July 2026
Twenty-one projects track where utility delivery meets the coast across Africa, the Americas, Asia Pacific, Europe, island states and the Middle East. Casablanca now adds an owner-issued final-capacity marine basis within its first phase, while the monitor keeps design scope separate from installation and acceptance evidence.
14 October 2026 / 83 sourcesCasablanca first phase includes shared intake, outfall and tunnel systems
ONEE's owner-issued prequalification basis requires Casablanca's first phase to deliver marine intake and discharge works sized for the final 822,000 m3/day plant. The February 2027 first-phase target therefore depends on final-capacity common systems, not visible onshore process progress alone.
10 August 2026 / 10 sourcesSADDN delivers first desalinated water to Radomiro Tomic
SADDN has moved from its 2022 BOOT award through a defined 1.3 km submarine system, coastal energization, intake-tower installation and high-head conveyance to first desalinated water at Radomiro Tomic. The complete route is connected, while accepted 840 l/s service, marine reliability and supply to all three divisions remain unverified.
15 July 2026 / 14 sourcesAlkimos completes intake tunnel as offshore acceptance continues
Alkimos has completed its 2.5 km intake tunnel and all offshore piling, but the 4 km outfall drive and 130 m diffuser remained active after the original June 2026 marine-construction window. Permanent connection and accepted system testing are still needed before the marine interface can be called complete.
15 July 2026 / 9 sourcesAlkimos completes offshore structures and tunnels before riser connections
Two distinct delivery fronts at Alkimos have crossed their physical-completion points. Jack-up barge Beverley installed both intake structures and the outfall diffuser before departing on 28 July, while the final tunnel boring machine reached the outfall structure in late August. Water Corporation now places permanent riser connections, inspections, surveys and commissioning checks ahead of first water in 2028.
6 October 2026 / 4 sourcesAqaba-Amman switches to existing intake assets and a canyon outfall
Aqaba-Amman's October marine addendum replaces the proposed new intake lagoon with the existing SEPCO lagoon and pumping station. It relocates the outfall to a canyon and describes a DN2800 HDPE installation with about 20,000 m3 of indicative excavation, including 11,500 m3 requiring onshore disposal.
24 October 2026 / 10 sourcesHassyan's six-pipe marine corridor enters operating proof
DEWA commissioned Hassyan Block A, 60 MIGD, by the end of March 2026. The wider marine installation is already sized for the planned 240 MIGD complex: eight intake risers feed four 3 m pipes, while two 3 m outfalls discharge through modelled diffusers outside the Ramsar boundary. Blocks B and C still have to turn that EPC configuration into sustained plant and receiving-water performance.
13 August 2026 / 6 sourcesTaweelah C public records stop at cooling-water-system review
Taweelah C's developer-side staffing now exposes two owner-review interfaces inside the 2.6 GW execution chain: cooling-water systems in mechanical and piping oversight, and existing-plant tie-ins, permits, surveys and commissioning in BOP management. Those role descriptions still do not identify a seawater intake, discharge route, pipeline, dredging, cofferdam or marine-civil package.
12 August 2026 / 10 sourcesTaweelah RO operating record omits the as-built marine route
EWEC lists Taweelah RO as an existing 909,000 m3/day facility and records 297.16 million m3 of production in 2024, with 0.91 million m3/day available at peak from 2023 through 2025. ACWA's marine appendices preserve proposed intake and outfall layouts plus 27.8 m3/s intake and 17.3 m3/s discharge assumptions used during bid-stage modelling. They do not disclose the final as-built route.
10 August 2026 / 6 sourcesRabigh 4 completes 600,000 m3/day performance test
SEPCOIII reports that Rabigh 4 completed its EPC performance test on 19 February 2026 at the 600,000 m3/day design capacity. Power use was 2.712 kWh/m3, falling to 2.659 kWh/m3 after photovoltaic generation. SWPC has not published commercial-operation acceptance.
20 July 2026 / 6 sourcesKinoya's US$104.85m DBO keeps the existing Laucala Bay outfall
WAF's CW02 prequalification applications closed on 30 September 2026 at 15:00 Fiji time (GMT+12), following a September corrigendum. Bidding invitations are expected in December for up to three shortlisted eligible applicants. The estimated US$104.85 million Kinoya upgrade combines 36 MLD treatment capacity, five years of operations and reuse of the existing 2.4 km Laucala Bay outfall.
14 October 2026 / 8 sourcesSouth Tarawa's three ocean outfalls reached civil completion in 2018
ADB records civil completion of South Tarawa's Betio, Bairiki and Bikenibeu ocean outfalls in August 2018 and commissioning in Q2 2019. Its 2024 completion and validation reports pair that delivery record with mixed water-quality results, partly achieved access outcomes and continuing operating-capacity constraints.
12 August 2026 / 6 sourcesTuas' outfall was substantially complete four years before system commissioning
PUB records Tuas WRP's 1.8 km nearshore outfall and other Contract 1A permanent works substantially completed on 14 August 2023. In December 2025, however, the wider DTSS Phase 2 programme was only about 80% complete and Tuas WRP 57%; phased commissioning remains scheduled from 2027.
16 July 2026 / 6 sourcesMarine Investment in MENA: From Committed Capital to Working Assets
Duqm cargo results test the next equipment commitment. Aqaba's October marine redesign changes dredging, pipe installation and work release. Jubail's original contract ledger separates options, scope reductions and zero-dollar access events. Three case files connect capital decisions to working assets.
24 October 2026 / 12 sourcesGopalpur is testing demand before it sizes the marine works
The proposed 100 MLD Gopalpur desalination PPP has not reached concession procurement. IFC's current advisory briefs put demand and phasing ahead of final technical sizing: technical advisers must compare sites and define intake and outfall conditions, while commercial advisers must test user commitments, tariffs, ramp-up and government support.
18 July 2026 / 6 sourcesLuderitz SWRO has two study chains, not one disclosed contract
Toyota Tsusho is the named proponent for a METI-supported renewable-energy seawater-desalination feasibility study in Namibia's Karas Region. Luderitz Town Council connects that study to NamWater, an approximately 100,000 m3/day concept, photovoltaic power, a February 2027 study target and allocated land. NamWater's separate bathymetry and salinity-dispersion RFP establishes marine investigation demand but still has no published consultant award.
28 July 2026 / 4 sourcesSaudi Arabia groups five planned IWPs in one developer qualification
Sharakat is qualifying developers for five future seawater reverse-osmosis plants in a single programme. Ras Al Khair 2, Ras Al Khair 3, Tabuk 1, Shuqaiq 4 and Jazan 1 add to 2.1 million cubic metres per day of planned capacity, with intake and outfall facilities assigned to the future project companies.
18 July 2026 / 8 sourcesAlgarve starts work on a €107.9 million desalination system
Construction release came in April and the first brick followed on 8 July. The awarded scope includes two intake towers about 2 km offshore, twin intake conduits, a 2.13 km brine outfall, the coastal pumping station and a plant sized initially for 500 litres per second.
10 August 2026 / 5 sourcesHoniara outfall programme carries two unreconciled design bases
ADB still lists Honiara's new wastewater-outfall works at bid-document stage. The 2023 EIA designs a 350 m by 400 mm NRH line and a 500 m by 800 mm Ranadi line. Solomon Water's 2025 plan also repeats an older three-outfall basis with a 900-1,000 m by 357 mm NRH line and a 500 m by 312 mm Soap line. No public tender reconciles the two versions.
3 August 2026 / 7 sourcesRosarito moves its desalination bid opening to 24 July
Compras MX now lists 24 July at 11:00 for proposal opening and 29 July at 17:00 for the ruling on Rosarito's first 2,200 l/s desalination module. The live record includes a notice deferring the opening date and replaces the earlier 21 and 24 July programme dates.
18 July 2026 / 5 sourcesTwo bids price Hawar's offshore intake and outfall
Bahrain Tender Board opened two bids for Hawar's separate offshore intake and outfall EPC package on 25 December 2025. The works serve a 1 MIGD SWRO plant but must be sized for an ultimate 3 MIGD production capacity.
18 July 2026 / 7 sourcesGhubrah III construction targets Q1 2027 operation
Nama PWP still targets Q1 2027 commercial operation for Oman's 300,000 m3/day Ghubrah III plant. The four-line marine system is well defined on paper, but current public updates do not say how much of the intake and outfall network has been installed or accepted.
20 July 2026 / 7 sourcesFujairah I signs AED 1.046 billion desalination EPC
EtihadWE's development arm has signed the Fujairah I EPC with NMDC Infra and Lantania Aguas. The 60 MIGD scheme includes a submarine intake tower, two GRP intake pipelines and a GRP marine outfall at the Port of Fujairah.
20 July 2026 / 4 sourcesSizewell C's three offshore utility lines are under construction
An active harbour notice covers Sizewell C's treated-wastewater outfall and the temporary desalination intake and outfall. The CDO pipe pull was scheduled in April and the two desalination pipe pulls in June. Both operation-specific notices have since closed, while the wider three-line notice remains active.
20 July 2026 / 9 sourcesToukley puts the pump station inland and the intake 1 km offshore
Central Coast Council's current Toukley concept keeps the seawater pump station beside the treatment site and sends a 2.4 km microtunnel to an intake about 1 km off Jenny Dixon Beach. Brine would use the existing Norah Head ocean outfall through a short connection.
20 July 2026 / 6 sourcesSubiaco's AUD 105 Million Design Phase Carries a Regional Investment Test
Subiaco's initial AUD 105 million funds design, engineering and site preparation. Infrastructure WA's assessment puts the preferred plant at 90 ML/day and ties a large share of its economic benefits to deferring other wastewater and ocean-outlet investment.
3 November 2026 / 4 sourcesLower Molonglo Moves from Excavation to a Revised Pour Programme
Icon Water's August programme places three major foundation pours in October, November and December. Its earlier June update records excavation complete and describes a 950 m3 largest pour for the bioreactor foundations.
3 November 2026 / 4 sourcesNew Deirout Pairs Seven Irrigation Outlets With Network Flow Monitoring
Egypt's water ministry reports that the New Deirout barrages became operational on 28 February 2026 and that monitoring-system trials began on 30 March. The scheme couples seven irrigation outlets with 38 monitoring stations, a central station and an Assiut sub-monitoring station.
3 November 2026 / 4 sourcesDavis prepares water-plant modules for an over-ice resupply
Australia's Antarctic programme is sending a containerised pump house, a reverse-osmosis plant and earthmoving equipment to Davis for the 2026-27 construction season. Its 20 October departure account puts RSV Nuyina's planned resupply position about one kilometre from station buildings. More than half of the voyage's cargo of over 950 tonnes is assigned to infrastructure renewal. AAD's V1 schedule lists an over-ice resupply at Davis from 4 to 13 November. [1][3]
4 November 2026 / 4 sourcesMelaka sets a buoyed work area for power-plant mud removal
Malaysia's Marine Department has published a mud-removal work area for the Melaka 2,242 MW combined-cycle power plant, with a stated period from 7 October 2026 to 15 June 2027. Port Circular 52/2026, dated 12 October, identifies four boundary points and names anchor-handling tugs JETTA 35 and JETTA 37 and barges JETTA 39 and LIGHT SABER. It advises other vessels to keep clear of the work area and navigate cautiously nearby. [1]
4 November 2026 / 4 sourcesEleyele's Completion Review Found an Unassigned Maintenance Role
The World Bank's 28 February 2025 completion report for the Ibadan Urban Flood Management Project recorded Eleyele Dam's maintenance responsibility as still pending. The dam had been commissioned on 29 May 2020 after spillway, embankment, intake and outlet rehabilitation. The project owner's account names CGC-CHWE JV as works contractor and Tractebel Engineering, with SGI Consulting, for design and supervision. This completed civil-work package needed an operating handover covering both flood release and raw-water supply. [1][2]
4 November 2026 / 4 sourcesLagos Omi Eko: The Charging Footprint Changes the Jetty Workfront
Lagos's Omi Eko electric-ferry programme brings a land problem into the jetty design. The environmental assessment identifies room for charging at Marina, Ikorodu, Badore, Bariga and Festac through parking reallocation. Falomo faces a tighter site with likely additional land requirements; Ebute Ojo, Liverpool, Oworonshoki and Baiyeku also require additional land in that assessment. EIB's June 2025 appraisal describes 25 jetties and stations, 12 charging and electricity-generation locations and two terminals equipped for daily or light maintenance. Each civil workfront needs enough shore space to make its waterfront usable. [2][3]
4 November 2026 / 4 sourcesKitchener Drain: Keeping Bank Repairs Intact During Dredging
Kitchener Drain's rehabilitation puts dredging crews beside bank-protection works. Egypt's water ministry reported on 11 January 2026 that two dredging and weed-removal work packages and two bank-rehabilitation packages were under way, including stone pitching and a retaining wall. The programme's October 2018 environmental summary identifies two controls for drain maintenance: avoid excavating beneath the submerged bank and keep saturated dredged material off its crest. Those requirements make the repaired bank's geometry part of the next cleaning operation. [1][2]
5 November 2026 / 5 sourcesKeyhaven: Inspecting a Submerged Tidal Outfall
The Environment Agency reported completion of the Avon Water tidal-outfall replacement at Keyhaven Harbour on 13 October 2026. Significant corrosion had prompted renewal of a structure serving a flood-defence system that protects around 40 properties. Much of the structure is submerged for long periods: specialist divers carried out detailed inspections, and the tides governed the work [1].
5 November 2026 / 3 sourcesBridgwater's Gate Redesign Meets the Concrete Programme
Bridgwater's revised tidal-barrier design puts the gate-drive equipment at the base of three towers while work advances on the permanent foundations. The Environment Agency announced the changes on 15 January 2026: towers approximately 15 m high, a 10 m reduction, with simpler shapes and lighter operational walkways. Somerset Council's October construction account reports reinforcement beneath the central pier and permanent concrete taking shape. The next interface is between the revised machinery arrangement and the concrete being cast. [1][2]
5 November 2026 / 5 sourcesBarkley: The Repair Window Runs Through Loaded Testing
Barkley's 2026 dewatering programme put miter-gate and valve repairs inside a planned 52-day navigation outage. USACE's 15 September account described a sequence extending from underwater clearance and chamber isolation through repairs, refilling and tests of miter-gate cycling and valve operation under hydraulic pressure. The work targeted miter gates and filling and emptying valves. Its September programme aimed to restore navigation on 1 October. A separate 2 October navigation notice identified Barkley as the diversion route for Kentucky Lock's planned 13-20 October closure. [1][2]
5 November 2026 / 5 sourcesNo matching publications.
Related project records
Aqaba oil and chemical pipeline crossings
Participation: Requires review / Checked / Notice and deadline
Pipeline bridge and hydraulic culverts / 16 November bids; document collection ended
Last checked 1 November 2026 / 4 sourcesAqaba New Oil Terminal marine EPC package
Participation: Requires review / Checked / Notice and deadline
Submission deadline:
Liquid-cargo terminal berth enhancement / December bids advertised; document requests closed 28 October and access needs ADC confirmation
Last checked 31 October 2026 / 4 sourcesAlkimos Seawater Desalination Plant marine tunnels and offshore structures
Participation: Not assessed
Marine utilities / First intake-to-tunnel connection complete; excavation towards the second riser continues
Last checked 30 October 2026 / 11 sourcesNEP offshore pipeline seabed preparation and protection
Participation: Requires review / Checked / Notice and deadline
Marine utilities / Pre-lay sand-wave clearance and separate post-lay protection workstreams
Last checked 30 October 2026 / 4 sourcesNEP CS006 and CS007 expansion-store appraisal
Participation: Requires review / Checked / Notice and deadline
Marine utilities / Two appraisal wells complete; evaluation and concept selection continue
Last checked 30 October 2026 / 4 sourcesCanvey Lake dredging and off-site sediment disposal
Participation: Requires review / Checked / Notice and deadline
Dredging / UK4 tender; fixed £1m excluding VAT; FTS deadline 2 November 2026, 12:00 UTC
Last checked 28 October 2026 / 9 sourcesPortsmouth Water service-reservoir maintenance framework
Participation: Planned procurement / Checked / Notice and deadline
Next notice (expected):
Service-reservoir maintenance / Planning history checked 31 October 2026 still contains only the 13 October notice; its expected 30 October formal notice is absent from that history
Last checked 31 October 2026 / 5 sourcesWelsh Water service-reservoir cleaning and minor refurbishment
Participation: Submissions closed / Checked / Notice and deadline
Submission deadline:
Service-reservoir maintenance / Conditions-of-participation deadline passed 2 November 2026 at 23:59 UTC; next advertised stages are selection and ITT rounds
Last checked 3 November 2026 / 4 sourcesGermany Beck flood-alleviation works procurement
Participation: Cancelled / Checked / Notice and deadline
Inland flood-alleviation and pumping infrastructure / Procurement terminated on 30 September 2026 by notice 092372-2026; a replacement process and the wider scheme's future remain unconfirmed
Last checked 14 October 2026 / 6 sourcesPort Ellen ferry terminal marine redevelopment
Participation: Awarded / Checked / Notice and deadline
Marine infrastructure / Marine construction programme; owner 9 October steel-pile import and local-transfer plan, with actual receipts to confirm.
Last checked 28 October 2026 / 7 sourcesLammebrug in-water replacement and operating-cable interface
Participation: Not assessed
Marine infrastructure / Contractor reports basement concrete placement and announces further foundation/cable works; final acceptance and commissioning unconfirmed
Last checked 5 September 2026 / 4 sourcesAbsecon Island outfall repair and Ventnor vehicle-ramp works
Participation: Not assessed
Marine utilities / Agate named for outfall repair or extension and vehicle-ramp works; notice to proceed and mobilisation not confirmed
Last checked 1 September 2026 / 5 sourcesDakar Mamelles desalination intake and brine discharge
Participation: Not assessed
Marine utilities / Plant remained under construction in February 2026; commissioning was expected later in 2026, while final marine handover evidence remains unpublished
Last checked 19 July 2026 / 6 sourcesRas Mohaisen Independent Water Project and Marine Intake/Outfall
Participation: Not assessed
Marine utilities / Project agreements, the L&T-Lantania EPC award and December 2025 financial close are evidenced, and ACWA's 3 March 2026 year-end report classifies the full 300,000 m3/day capacity as under construction; offshore mobilisation, installed intake or outfall geometry, first water and accepted production are not dated
Last checked 15 July 2026 / 8 sourcesCasablanca-Settat desalination marine works and common systems
Participation: Not assessed
Marine utilities / Construction active; common marine, tunnelling, and electrical systems remain on the path to the February 2027 first-phase target
Last checked 10 August 2026 / 10 sourcesCodelco Northern District desalinated water supply marine works
Participation: Not assessed
Marine utilities / First desalinated water reached Radomiro Tomic during progressive commissioning; rated service and commercial operation remain open
Last checked 15 July 2026 / 14 sourcesAqaba-Amman National Water Carrier marine works
Participation: Not assessed
Marine utilities / October marine assessment adopts the existing SEPCO intake and a revised canyon outfall; financing approvals recorded, construction release unconfirmed
Last checked 24 October 2026 / 10 sourcesHassyan IWP seawater intake and outfall programme
Participation: Not assessed
Marine utilities / Block A in service; Blocks B and C remain in the 2026 delivery programme
Last checked 13 August 2026 / 6 sourcesTaweelah C IPP coastal utility interface
Participation: Not assessed
Marine utilities / PPA and EPC signed; cooling-water review and existing-plant tie-ins exposed, marine route unconfirmed
Last checked 16 July 2026 / 10 sourcesTaweelah RO desalination intake and outfall system
Participation: Not assessed
Marine utilities / EWEC lists Taweelah RO as an existing 909,000 m3/day facility and records 297.16 million m3 of 2024 production; final as-built intake and outfall geometry is not publicly disclosed
Last checked 10 August 2026 / 8 sourcesRabigh 4 IWP intake, outfall and storage system
Participation: Not assessed
Marine utilities / EPC performance test completed on 19 February 2026; SWPC commercial-operation confirmation remains unpublished
Last checked 14 August 2026 / 7 sourcesFiji Kinoya wastewater treatment and Laucala Bay outfall programme
Participation: Submissions closed / Checked / Notice and deadline
Submission deadline: Next notice (expected):
Marine utilities / CW02 prequalification applications closed on 30 September 2026; bidding invitations expected in December 2026
Last checked 14 October 2026 / 8 sourcesSouth Tarawa sanitation and three-ocean-outfall rehabilitation
Participation: Not assessed
Marine utilities / ADB records the three-outfall civil package completed in August 2018, testing and commissioning in Q2 2019, the wider project physically completed on 31 December 2019, and the financing operation closed
Last checked 12 August 2026 / 6 sourcesSingapore DTSS2 Tuas WRP nearshore outfall
Participation: Not assessed
Marine utilities / Nearshore outfall and Contract 1A permanent works were substantially completed on 14 August 2023; wider DTSS2 and Tuas WRP completion, commissioning and discharge acceptance remain open
Last checked 16 July 2026 / 9 sourcesGopalpur Industrial Park 100 MLD desalination PPP
Participation: Not assessed
Marine utilities / Four IFC advisory procurements define transaction preparation; the 100 MLD PPP, marine site, concession and works remain unawarded
Last checked 18 July 2026 / 7 sourcesLuderitz renewable-energy SWRO and marine studies
Participation: Not assessed
Marine utilities / Toyota Tsusho feasibility study active; marine-site consultant, selected site and delivery awards remain unconfirmed
Last checked 28 July 2026 / 4 sourcesSaudi Arabia five-IWP developer qualification programme
Participation: Not assessed
Marine utilities / Sharakat is qualifying developers across five planned seawater reverse-osmosis projects; no individual RFP, award or project-specific marine package is public
Last checked 18 July 2026 / 8 sourcesAlgarve seawater desalination intake and outfall system
Participation: Not assessed
Marine utilities / Construction was released on 22 April 2026 and the site milestone was held on 8 July; offshore intake and outfall execution remains unverified
Last checked 18 July 2026 / 6 sourcesHoniara wastewater mains and two deep-sea outfalls
Participation: Not assessed
Marine utilities / ADB still lists bid-document preparation for the new marine works; Solomon Water's public plan carries competing three-outfall, two-new-outfall and NRH/Ranadi package definitions, with no works award disclosed
Last checked 19 July 2026 / 8 sourcesRosarito 2,200 l/s desalination procurement
Participation: Not assessed
Marine utilities / Compras MX lists the invitation as current, with proposal opening deferred to 24 July 2026 and the ruling moved to 29 July; no award is published
Last checked 18 July 2026 / 5 sourcesHawar SWRO offshore intake and outfall tender
Participation: Not assessed
Marine utilities / Two bids were opened for Hawar's separate offshore intake and outfall EPC package on 25 December 2025; EWA still lists the wider desalination scheme as a future project and no award is published
Last checked 18 July 2026 / 7 sourcesGhubrah III IWP desalination marine system
Participation: Not assessed
Marine utilities / Under construction; Nama PWP targets commercial operation in Q1 2027
Last checked 20 July 2026 / 9 sourcesFujairah I IWP seawater intake and outfall
Participation: Not assessed
Marine utilities / EPC agreement signed on 7 May 2026; no notice to proceed or marine mobilisation is published
Last checked 20 July 2026 / 4 sourcesSizewell C temporary desalination intake, outfall and CDO
Participation: Not assessed
Marine utilities / Three sub-seabed utility lines remain under an active harbour construction notice; the CDO and desalination pipe-pull notices have closed
Last checked 20 July 2026 / 9 sourcesToukley desalination intake and existing-outfall connection
Participation: Not assessed
Marine utilities / Prepare EIS; the current concept fixes a 2.4 km intake tunnel and existing-outfall connection, but no construction decision or funding is public
Last checked 20 July 2026 / 7 sourcesSubiaco water-resource recovery compact-plant upgrade
Participation: Planned procurement / Checked / Notice and deadline
Wastewater treatment and ocean-outlet capacity / Initial AUD 105 million committed to design, engineering and site preparation
Last checked 3 November 2026 / 4 sourcesLower Molonglo membrane-bioreactor renewal
Participation: Requires review / Checked / Notice and deadline
Wastewater bioreactor foundations and commissioning / Excavation completed in June; August owner plan schedules foundation pours in October, November and December 2026
Last checked 3 November 2026 / 4 sourcesNew Deirout barrages and irrigation water-management system
Participation: Not assessed
Irrigation regulators and discharge-monitoring systems / Ministry reports barrages operational from 28 February 2026 and monitoring-system trials from 30 March
Last checked 3 November 2026 / 4 sourcesDavis station seawater-intake and reverse-osmosis renewal
Participation: Not assessed
Seawater intake, water production and station services / Water-system modules dispatched in October 2026; V1 schedule plans Davis over-ice resupply for 4-13 November
Last checked 4 November 2026 / 4 sourcesMelaka power-plant mud removal and intake interface
Participation: Not assessed
Cooling-water intake sediment removal / Marine circular defines a buoyed mud-removal work area for 7 October 2026-15 June 2027
Last checked 4 November 2026 / 4 sourcesEleyele Dam and intake-tower rehabilitation
Participation: Not assessed
Earth dam, spillway, intake and scour-outlet rehabilitation / IUFMP records commissioning on 29 May 2020; the World Bank's 2023 implementation report confirms completed rehabilitation; its 2025 review records the dam-maintenance assignment as pending
Last checked 4 November 2026 / 4 sourcesLagos Omi Eko jetties, stations and maintenance facilities
Participation: Not assessed
Passenger jetties and shore charging civil infrastructure / EIB financing signed 11 December 2025; appraisal defines planned jetty, charging and maintenance scope with environmental and land-delivery conditions
Last checked 4 November 2026 / 4 sourcesKitchener Drain rehabilitation and Samatay-Hamoul pumping stations
Participation: Requires review / Checked / Notice and deadline
Agricultural drain rehabilitation, bank protection and pumping stations / Drain and bank works reported in execution in January 2026; Samatay-Hamoul evaluation complete with award order in preparation in September, followed by an October procurement review
Last checked 4 November 2026 / 8 sourcesBridgwater Tidal Barrier and downstream flood defences
Participation: Not assessed
Tidal surge barrier and downstream flood defences / Permanent reinforced-concrete foundations advancing; revised superstructure scheduled from early 2027
Last checked 5 November 2026 / 5 sourcesNo matching projects.
Scope and corrections
This general technical reference is not project-specific design advice. Project status is dated and linked to its public sources; corrections can be submitted with the relevant design, permit, acceptance, operating or field record.
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