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 / Marine utilities
Marine utilities, landfalls, and pipeline interfaces.
Intakes and outfalls are hydraulic systems, subsea structures and environmental controls at the same time. Their evidence has to follow the water path, the temporary installation states and the 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.
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
The CW02 DBO prequalification is open and retains the existing 2.4-kilometre outfall. The selected contractor, tie-in condition, discharge obligations and commissioning tests remain future evidence.
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.
MENA Marine Works Monitor: July 2026 PDF
Designed open-access edition with executive findings, calculated figures, the fixed 34-project evidence table, method, limitations, and source register.
MENA Marine Works Monitor evidence CSV
Fixed 34-project evidence table used for the July 2026 MENA Marine Works Monitor.
Global Marine Utility Interface Monitor: July 2026 PDF
Designed open-access edition with executive findings, calculated figures, the fixed 21-project evidence table, method, limitations, and source register.
Global marine utility interface monitor evidence CSV
Fixed 21-project evidence table used for the July 2026 global marine utility interface monitor.
Performance records CSV
Structured export of asset-specific commissioning and operating evidence, including the measurement basis, confirmed evidence and unresolved operating outcomes.
Source register
Primary owner, authority, lender, contractor and technical references cited by IMWO records, with last checked dates and direct source routes.
Current evidence
Marine utilities collection
Marine utility evidence follows the complete hydraulic path from intake and landfall through conveyance, treatment or cooling, discharge and receiving water, preserving design envelopes, temporary installation states, as-built acceptance and operating monitoring as separate records.
- Publications
- 35
- Projects
- 24
- Confirmed
- 23
- Regions
- 6
- Change histories
- 24
- Updated
- 16 August 2026
Engineering frame
Technical scope
- Marine alignment
- Identify intake, outfall, tunnel, diffuser, shore crossing and tie-in geometry before classifying marine scope.
- 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
Island 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.
10 August 2026 / 82 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 sourcesAqaba-Amman financial close now separates signed agreements from marine mobilisation
Jordan signed the National Water Carrier's final technical and legal agreement on 21 April, but the water ministry said on 7 July that financial close was still being completed. Until close and notice to proceed, Aqaba's intake lagoon, cofferdam, trench, outfall, diffuser and marine controls remain an assessed delivery sequence rather than a mobilised workfront.
15 July 2026 / 7 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
ADB now lists CW02 international prequalification as closed after a 17 July 2026 deadline and says tender documents for the estimated US$104.85 million Kinoya operate-design-build-operate upgrade are being finalised. The package covers a 36 MLD first stage and five years of operations while reusing the existing 2.4 km Laucala Bay outfall.
16 August 2026 / 7 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 sourcesMENA Marine Works Monitor: July 2026
Thirty-four Middle East records span fishing ports, commercial terminals, naval fleet-support infrastructure, energy-terminal access and export systems, desalination marine works and a five-plant seawater pipeline at developer qualification. Hassyan's first 60 MIGD block is operating, while acceptance of the full six-pipe marine corridor and receiving-water performance remains to be demonstrated as Blocks B and C enter service.
13 August 2026 / 119 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 sourcesNo matching publications.
Related project records
Dakar Mamelles desalination intake and brine discharge
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
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
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
Marine utilities / First desalinated water reached Radomiro Tomic during progressive commissioning; rated service and commercial operation remain open
Last checked 15 July 2026 / 14 sourcesAlkimos Seawater Desalination Plant marine tunnels and offshore structures
Marine utilities / Intake tunnel and offshore piling complete; outfall tunnel and diffuser installation remained active after the original June 2026 marine-work window
Last checked 15 July 2026 / 9 sourcesAqaba-Amman National Water Carrier marine works
Marine utilities / Final technical and legal agreement signed; financial close still pending as of 7 July 2026
Last checked 15 July 2026 / 7 sourcesHassyan IWP seawater intake and outfall programme
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
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
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
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
Marine utilities / ADB lists CW02 international prequalification as closed with a 17 July 2026 deadline; tender documents are being finalised
Last checked 16 August 2026 / 7 sourcesSouth Tarawa sanitation and three-ocean-outfall rehabilitation
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
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
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
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
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
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
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
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
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
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
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
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
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 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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