Project record

Portsmouth Water service-reservoir maintenance framework

Participation: Planned procurement
Next notice (expected): 30 October 2026
Participation checked: 31 October 2026

Planning history checked 31 October 2026 still contains only the 13 October notice; its expected 30 October formal notice is absent from that history

Participation source

Portsmouth Water plans a maintenance framework for its concrete service reservoirs and raw-water storage. The 13 October planning notice expected a formal notice on 30 October; the history checked on 31 October still contains only that planning release.

Location

United Kingdom / Europe

Segment

Service-reservoir maintenance

Phase

Planning / Confirmed

Last checked

31 October 2026

Coverage

Related sectors

Service-reservoir maintenance is the primary work classification. Related sectors connect this record to adjacent marine delivery and market coverage.

Subject index

Related subjects

These subject pages bring together related projects, technical articles, reports, and evidence methods.

Project anatomy

Contract scope and delivery roles

Client / authority: Portsmouth Water
Procurement references: 096621-2026; ocds-h6vhtk-0786b8
Delivery parties: Framework suppliers - appointments not disclosed in the planning notice
Contract route: Planning notice 096621-2026 identifies UVDB categories 4.1.6 and 4.1.6.2. It proposes two framework partners, direct allocation for planned and reactive minor works up to GBP 100,000, and a mini-competition between the partners for larger works. Supplier registration and current category coverage require confirmation.
Execution window: The 13 October planning notice expected formal procurement on 30 October 2026. The history checked on 31 October contains no later release, submission deadline or framework service dates.

Works package: Inspection, draining, cleaning, condition assessment and remedial work across approximately 35 concrete service reservoirs, ranging from 0.1 to 45 ML, and a 135 ML raw-water reservoir. Planned and emergency maintenance have separate allocation provisions; site schedules and detailed repair specifications remain to be issued.
Marine interfaces: Reservoir isolation, continued water supply and independent chamber sampling link maintenance to network operations. Portsmouth Water's September 2023 investment proposal describes supply-continuity and sampling limitations; implementation and current arrangements at individual sites require project-specific evidence.
Commercial evidence boundary: The notice gives an estimate of GBP 5,756,450, with tax treatment unspecified in the structured value field. Minor-work allocation depends on performance, availability, programming and geography. Payment, acceptance, security and guaranteed workload require the framework documents.

Contract and delivery chain

Work packages and named roles

Published scope, named parties and supporting evidence for each workstream.

Procurement ownership

Service-reservoir inspection and maintenance framework

Named party: Portsmouth Water
Evidence status: Confirmed
Source position: The planning notice names Portsmouth Water as buyer and describes the reservoir portfolio and proposed maintenance allocation. Source

Framework appointments

Two planned partners for routine, emergency and larger repairs

Named party: Suppliers not identified in the planning notice
Evidence status: Not evidenced
Source position: The notice proposes the allocation mechanism; no supplier appointment or award is disclosed in this history.

Evidence gap

What remains unverified

Outstanding evidence

Formal notice and submission deadline
UVDB registration and category coverage
Reservoir isolation and chamber sampling arrangements
Call-off allocation, payment and acceptance terms

Reporting status

Project phase: Planning
Evidence confidence: Confirmed
Last checked: 31 October 2026
Cited sources: 5

Sources and related records

Project changes Methodology Email a correction Project tracker

Source collections

Project sources 5

AMP 8/9 reservoir maintenance: official procurement history UK Find a Tender, 13 October 2026; checked 31 October 2026
One planning release; portfolio, allocation, estimate and UVDB categories. The expected 30 October formal-notice date has passed; the history checked on 31 October contains no later release.
AMP 8/9 Reservoir Maintenance Term Service Contract: original notice Portsmouth Water / Find a Tender, 13 October 2026
Original notice locator. The official structured history supplies the notice facts; the complete framework documents have not been obtained.
Annual Report and Accounts 2024: reservoir inspection and maintenance Portsmouth Water, 2024; report period 2023-24
Printed page 57 reports work at nine sites and a planned move to risk-based maintenance. Historical context, not delivery under the 2026 framework.
PRT07.04: isolation and recovery of service reservoirs Portsmouth Water, 28 September 2023
Pages 3-4 describe supply continuity and independent chamber sampling. An investment proposal, with current implementation unverified.
Asset health and service reservoir integrity: Drinking Water 2025 Drinking Water Inspectorate, 2025 reporting year; checked 14 October 2026
Inspection, ingress and remediation context. No reconciliation of differing report denominators or inference of a particular reservoir's current condition.