---
title: "K298 Maple Lodge STW Quality AMP 7 New Permit"
ocid: "ocds-h6vhtk-04faf2"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-04faf2"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-04faf2.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-04faf2.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "THAMES WATER UTILITIES LIMITED"
published: "2026-02-17"
---

# K298 Maple Lodge STW Quality AMP 7 New Permit

Buyer: THAMES WATER UTILITIES LIMITED  
Current stage: Award  
OCID: ocds-h6vhtk-04faf2

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## Summary

The procurement process for the project titled "K298 Maple Lodge STW Quality AMP 7 New Permit" was initiated by Thames Water Utilities Limited, a private utility company based in Reading, United Kingdom. This contract, valued between £140m to £280m, falls within the "Wastewater treatment plant construction work" category and is located in the UKI region. The procurement method used was a selective competitive flexible procedure, and the contract has reached the award stage as of February 2026, with the awarded supplier being Kier Infrastructure and Overseas Limited. The contract period is set to commence on 1st April 2026 and end on 29th March 2030.

This tender offers significant opportunities for companies involved in wastewater treatment plant construction and related infrastructure sectors, particularly those with expertise in civils alterations, chemical dosing systems, and SCADA upgrades. The project involves complex technical work packages, making it suitable for large-scale businesses capable of managing high-value contracts and delivering advanced engineering solutions. Supplier selection was rigorous, emphasising technical, behavioural, and commercial capabilities, presenting a growth opportunity for businesses that can innovate and meet Thames Water's high standards.

## Notice

This project includes, but is not limited to the following packages of work: An additional inlet screen with civils alterations and screening handling upgrade An additional detritor and flow inlet channel, incorporating a new storm separation weir A new storm tank and river outfall, including flow transfer culvert and new storm return pumping station Upgrades to the existing six PSTs and conversion of three storm tanks into PSTs, fitted with chain and flight scraper Replacement Primary chemical dosing pumps to aid Phosphorus removal A new activated sludge plant Bank C, with new feed PS and blowers Eight new 28m diameter final settlement tanks, interconnecting pipework, distribution chambers and RAS system A new secondary chemical dosing system to aid Phosphorus removal Two new Tertiary Solids Removal treatment plants, one serving the effluent from Bank A and B, and one serving the effluent from the new Bank C An additional Drum thickener New incoming switchboard for the new DNO supply Modification and upgrade of HV/LV networks Modification and upgrade to the power management system and site-wide SCADA Modification and upgrade to the Process SCADA Additional standby powered generation Demolition and removal of redundant structures, plant and equipment N.B. Please note that this Contract Notice shows a value of PS280m. The current contract value is circa PS140m-PS280m.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/014471-2026 |
| Notice type | UK6 - Contract Award Notice |
| Procurement type | Standard |
| Procurement category | Works |
| Procurement method | Selective |
| Procurement method details | Competitive flexible procedure |
| Tender suitability | Not specified |
| Awardee scale | Large |
| All stages | Tender, Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 17 Feb 2026 |
| Submission deadline | 25 Apr 2025 |
| Future notice date | Not specified |
| Award date | 17 Feb 2026 |
| Contract period | 31 Mar 2026 - 29 Mar 2030 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £280,000,000 |
| Lots value | £280,000,000 |
| Awards value | £280,000,000 |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Pending |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | THAMES WATER UTILITIES LIMITED |
| Locality | READING |
| Post town | Reading |
| Postcode | RG1 8DB |
| Country | England |
| ITL 1 | TLJ South East (England) |
| ITL 2 | TLJ1 Berkshire, Buckinghamshire and Oxfordshire |
| ITL 3 | TLJ16 Berkshire West |
| Local authority | Reading |
| Electoral ward | Thames |
| Westminster constituency | Reading Central |
| Delivery location | TLI London |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | KIER INFRASTRUCTURE AND OVERSEAS |

## CPV Codes

### Divisions

- 45 - Construction work

### Codes

- 45252127 - Wastewater treatment plant construction work

## Release History

- 17 Feb 2026 at 15:58 - Award - UK6 - Contract Award Notice - https://www.find-tender.service.gov.uk/Notice/014471-2026
- 1 Apr 2025 at 07:22 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/012114-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/014471-2026
  17th February 2026 - Contract award notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/012114-2025
  1st April 2025 - Tender notice on Find a Tender

## Notice URLs

- http://www.kier.co.uk
- https://forms.office.com/e/wVqLQ2QD9b
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-04faf2. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-04faf2.json.