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Queen Elizabeth II Reservoir maintenance

We’re carrying out essential maintenance on the 128-hectare Queen Elizabeth II Reservoir in Surrey.

A map showing the location of the Queen Elizabeth 2 Reservoir in Surrey 

What we’re doing

We need to inspect, clean and maintain the tunnels connecting the reservoirs. This will help prevent leaks and maintain the high quality of our drinking water.

To meet legal requirements, we also need to drain down the reservoir. We’ll do this at the same time to avoid repeated disruption around the site.

Where and when we’re working

We’ll be working in phases from April 2021, and we expect to be finished by June 2022.

Phase 1

During the first phase, our work will be around Walton Road, which will be closed for two months from Tuesday 26 April, while we dig down to the tunnel. Walton Road will be reopened to traffic in June. Once it’s reopened, there’ll be temporary traffic lights while we carry out a tunnel inspection, cleaning, and other maintenance.

From mid-April 2021, we’ll drain the reservoir down to 8-metres deep. To protect the fish that live in it, we’ll pump in extra oxygen at the same time.

Phase 2

During the second phase, from mid- June 2021 to February 2022, we’ll be working around Boormans Field, Hurst Road. From late October 2021, we expect to have up to six concrete lorries visiting the site daily.

Initially, we’ll be working from 8am to 5pm, with an extra hour at the end of each day for quiet work like inductions and team briefings. From October 2021 until June 2022, we’ll be working 24 hours a day, 7 days a week, as we reline the tunnel. We’ll always try to keep any noise to a minimum, using acoustic barriers for above-ground work.

What impact will it have?

These works won’t affect your water supply.

We’ll do all we can to reduce disruption and keep noise to a minimum. Lighting will be kept low-level, pointing away from any neighbouring properties.

If you run a business and it’s affected, you can find information on our business loss of profits policy here.

Working during the pandemic

We’ve been identified as key workers by the government, and our customers can still expect to see us in their communities providing their essential services. Learn more about how we’re working during the pandemic.

Learn more

Get more details about this project in our information pack or by watching the recording of an online customer information session.

Watch the video

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