K298 Maple Lodge STW Quality AMP 7 New Permit
THAMES WATER UTILITIES LIMITED · South East
Key facts
- Contract value
- £280,000,000
- Awarded
- 17 Feb 2026
- Contract starts
- 31 Mar 2026
- Contract ends
- 29 Mar 2030
- Procedure
- Competitive flexible procedure
- Buyer type
- Utilities & transport
- Source
- Find a Tender
Awarded to
| Supplier | Value |
|---|---|
| Kier Infrastructure and Overseas Ltd | £280,000,000 |
Description
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 £280m. The current contract value is circa £140m-£280m.
Categories (CPV)
- 45252127 Wastewater treatment plant construction work
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