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

Thames Water has awarded Kier Infrastructure an AMP8 contract for a major upgrade at its Maple Lodge Sewage Treatment Works, with an estimated value between £140 million and £280 million. The project includes new inlet screens, storm tanks, activated sludge plant, and final settlement tanks.

- Type: Contract
- Announced: 2026-02-18
- Where: Maple Lodge, United Kingdom
- Value: $354.0M (280.0M GBP)
- Status: announced
- Products: sewage treatment works upgrade
- Sectors: [Water Treatment Equipment](https://endata.com/sectors/water-treatment-equipment.md)

## Companies

- [Thames Water](https://endata.com/companies/7043.md) (customer)
- [Kier Infrastructure](https://endata.com/companies/90405.md) (supplier)

## Sources

- [waterbriefing.org](https://www.waterbriefing.org/home/contracts/item/25063-thames-water-awards-major-amp8-contract-for-maple-lodge-sewage-treatment-works-upgrade-worth-up-to-%C2%A3280m), 2026-02-18: "Thames Water has awarded an AMP8 contract for a major upgrade at its Maple Lodge Sewage Treatment Works with a current estimated value between £140 million to £280 million (inc VAT)."

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