01 Procurement
Tender overview
- Buyer
- THAMES WATER UTILITIES LIMITED
- Status
- Complete
- Procurement method
- Competitive flexible procedure
- Category
- works
- CPV classification
- Not supplied
- Tender period
- Not supplied — Not supplied
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.
This page represents one OCDS contracting process. Notices can be revised over time. Values may be estimates, award values or contract values and should be read with their displayed stage and date.
02 Awards and contracts
Published award records
K298 Maple Lodge STW Quality AMP 7 New Permit
- Awarded
- 17 February 2026
- Award value
- Not supplied
- Suppliers
- 1
- Signed contract
- Not supplied
03 Organisations
Buyers, suppliers and other parties
THAMES WATER UTILITIES LIMITED
Clearwater Court, Reading, UKJ11, RG1 8DB, United Kingdom
Companies House 02366661 →KIER INFRASTRUCTURE AND OVERSEAS LIMITED
2nd Floor Optimum House, Salford, UKD34, M50 3XP, United Kingdom
Companies House 01157281 →Companies House links appear only for explicit GB-COH identifiers. BritDB does not create company links from a similar name or address.
04 Provenance
Source for this process
Contains public sector information licensed under the Open Government Licence v3.0. Official external links are available only on the source transition page.