# Thames Water awards £280M contract to Kier for Maple Lodge STW upgrade

Thames Water Utilities Limited has awarded a contract valued at approximately £140M-£280M to Kier Infrastructure and Overseas Limited for the K298 Maple Lodge STW Quality AMP 7 New Permit project, covering upgrades to the Maple Lodge sewage treatment works in London. The contract runs from October 2025 to March 2030.

- Type: Contract
- Announced: 2025-04-01
- Where: London, United Kingdom
- Value: $362.6M (280.0M GBP)
- Status: announced
- Products: sewage treatment works upgrades
- Sectors: [Water Treatment Equipment](https://endata.com/sectors/water-treatment-equipment.md)

## Companies

- [Thames Water Utilities](https://endata.com/companies/6201.md) (customer)
- [Kier Infrastructure and Overseas Limited](https://endata.com/companies/83846.md) (supplier)

## Sources

- [tenderline.uk](https://tenderline.uk/tenders/k298-maple-lodge-stw-quality-amp-7-new-permit-ocds-h6vhtk-04faf2), 2025-04-01: "This project includes, but is not limited to the following packages of work: An additional inlet screen with civils alterations and screening handling upgrade."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.