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Guildford mains pipeline project

Guildford mains pipeline project

We’re investing £46m in Guildford to help transfer drinking water. This is from Pewley Downs Reservoir into the Netley Mill WTW. Galliford Try will be working on behalf of Thames Water on this project.

The work will start in February 2024 and is set to be completed by December 2025. Our working hours will be 7:30am to 6pm Monday to Friday and 8am to 1pm should we need to work on a weekend.

Benefits to the community and environment impact

The project will help to increase the resilience of the water supply in the East Guildford area. It will also help meet future water demands and prevent regular water outages.

Several potential impacts on the environment and cultural heritage have already been avoided. A scheme of biodiversity enhancements will be implemented. This will ensure biodiversity net gain across the project area. We'll also cooperate with Guildford BC on the SANG. 

How this may affect you

The main will follow the northern route from Pewley Reservoir. Landowners’ fields will be excavated to accommodate the new water main. There will also be associated building works at Pewley Reservoir and Netley Mill WTW’s. Construction impacts will also occur in the West Guildford area. 

Mitigation will be employed through implementation of a construction, environmental management plan (CEMP). If required, mitigation licences will be obtained from Natural England. This is in accordance with legislative requirements.

We'll notify residents of any impact to them by letter. Copies of these will be uploaded to this page where possible.

A map of where the new mains pipe is being laid at Guildford

Documents

You can view our documents on closures, work taking place, and an overview of the project.