Serving parts of North West London and the Home Counties.

A320 Ottershaw, Surrey, KT16

Updated: 12 July 2017


Please note: We have an upcoming embargo on our works which means we will be off site for two weeks from 15 July and will start working on 31 July. Work will then continue on the final section of the Ottershaw Roundabout.

As part of our investment programme to replace ageing pipework that has reached the end of its useful life, we need to carry out further essential works in the Ottershaw area to ensure a reliable water supply for our customers in the future.

Our nearby water treatment works supplies water to over 61,000 households through three large trunk main pipes, which follow the A320 (Guildford Road) Ottershaw towards Woking.

These pipes carry 25 million litres of water a day and were laid between 45 and 75 years ago. They are reaching the end of their life and we need to replace sections of this pipework.

We have been working closely with Surrey Highways to plan this work in phases to try and minimise the disruption caused.



Where exactly are we working?

Phase 1: completed

Ottershaw Roundabout – Anthonys Booster

We started our works in January 2016 to install new pipework between the Ottershaw roundabout and Anthonys Booster.

The first phase was to replace a 12 inch diameter pipe, which was in very poor condition, with a new 1.6km pipe along Brox road.


Phase 2: completed

Junction of A320/Brox Road and Anthonys Booster (just past McLaren’s roundabout)

The second phase was to lay new mains along the A320 from the junction of Brox Road to Anthony’s booster. Work started in June 2016 and completed by April 2017.


Phase 3: 18 April – October 2017

In the final phase of this work, we are going to be replacing a 21 inch diameter pipe that is in very poor condition. This will consist of laying 1.3km of new mains from the Brox Road junction to the Ottershaw Roundabout.



How will I be affected?

Access and Parking:

We will always try to maintain access to driveways while we work. However, there may be times when our work will affect vehicle access to certain properties. We will tell customers if they will be affected before this happens.



There will be some traffic disruptions caused in the area, we will do our best to keep this to a minimum.

We have been working closely with Surrey County Council, the local Highways Authority to plan this work in phases, so we can reduce disruption as much as possible.


We will carry out works on the A320 within a lane closure. We will be working in approximately 180 metre segments and we will use temporary two way traffic lights to manage traffic around the work area to ensure the safety of commuters and engineers working to improve the water network.


Water Supply: 

Your water supply should not be affected during these works.


Working Hours: 

We are working extended hours to reduce the overall period of the works. Our planned working hours are:

Weekdays : 7am - 7pm

Saturday:    9am - 1:30pm

Sunday:      9am - 5pm