Thames Water is inviting interested suppliers to register for a briefing on its upcoming tender for a £240 million AMP7/AMP8 upgrade project at its Oxford Sewage Treatment Works.

Scope of the procurement will include:

1. Compliance with a new quality permit consisting of an ammonia consent reduction from 3mg/l to 1mg/l; and a Tot-P reduction from 1mg/l to 0.25mg/l.
2.  Increase flow to full treatment from 1,040l/s to 1,802l/s.
3. Increase in the storm tank capacity from 6,831m3 to 18,167m3.
4. Replace inlet works and upgrade the effluent treatment process with a new 170,000PE stream.
5. Increase dissolved oxygen level in the final effluent channel.
6. Address existing effluent stream process capacity pinch points.
7. Increase the throughput capacity of sludge treatment process.
8. New power supply, HV ring main, fibre optic network and SCADA upgrade.

The launch event is planned to take place via Teams on 10th September 2024 at 1pm. Interested companies are asked to email This e-mail address is being protected from spambots. You need JavaScript enabled to view it for joining instructions and to confirm attendance.

Estimated date of publication of a formal contract notice will be in October 2024.