Clewer Hill Road main replacement
We're carrying out essential water main reinforcement and replacement in Clewer Hill, Windsor. This is to reduce supply interruptions, improve water quality, and tackle leakage. The new plastic pipes we’ll install are much stronger and more resilient. This will help us provide a more reliable service now and for future generations.
Our delivery partner, M Group Ltd (Morrisons Water Services), will carry out the work on our behalf. Our site teams will be wearing Thames Water personal protective equipment.
We’re sorry for any disruption this essential work may cause. We'll do everything we can to minimise the impact. By completing this planned work now, we aim to prevent future unexpected disruptions.
When and where we're working
We’ll be working in phases from Monday 15 September 2025, through to February 2026. These works include the excavation of trial holes and full pipe replacement activity.
Phase 1:
- Four-way traffic lights on Clewer Hill Road between the junctions of Perrycroft and Hatch Lane
- From 15 September to 3 October 2025
Phase 2A:
- Four-way traffic lights on Clewer Hill Road between the junctions of Ellison Close and Mayfield Drive
- From 6 to 26 October 2025
Phase 2B:
- Three-way lights on Clewer Hill Road between the junctions of Ellison Close and Mayfield Drive
- Road closure on Hatch Lane between the junctions of Clewer Hill Road and Firs Avenue
- From 3 to 17 November 2025
Phase 3A:
- Three-way traffic lights on Clewer Hill Road between the junctions of Mayfield Drive and Addington Close
- From 18 November to 19 December 2025
Phase 3B:
- Three-way traffic lights on Clewer Hill Road between the junctions of Mayfield Drive and Addington Close
- From 5 to 16 January 2026
Phase 4:
- Road closure on Clewer Hill Road from the junctions of Addington Close and Winkfield Road
- From 19 January to 24 February 2026
Please note that dates may change slightly, depending on site conditions and progress.
There will be no work on site between 20 December 2025 and 5 January 2026 due to the Christmas shutdown. The site will be cleared by Friday 19 December 2025.
Working hours:
Monday to Friday: 8am to 5pm
Weekend or night working may be required occasionally. If this happens, we’ll let you know in advance.
How this may affect you
- Resident and business access will be maintained throughout
- Emergency access will always be prioritised
- You may notice some noise and extra vehicle movements. We’ll do our best to minimise this and may install sound barriers where needed.
- Please avoid parking in the work area to help us keep things moving efficiently