Heathrow Airport, Eastern Balancing Reservoir

Morgan Sindall Contact

Heathrow Airport is committed to improving the quality of rainfall runoff from the airport being discharged into local watercourses and managing the year round flow of water from the airport to maximise the positive benefits for local water catchments. Heathrow Airport has appointed Morgan Sindall to refurbish and improve the facilities at the Eastern Balancing Reservoir (EBR). 

The location of EBR is within one of Heathrow's biodiversity sites and comprises of the designated River Crane Corridor Site of Importance for Nature Conservation (SINC) and is considered of Metropolitan Importance.  This site offers a home for local habitats including, hedgerows, grasslands, reedbeds and wet woodlands.  Within these habitats you can find different types of birds, protected species such as bats, snakes and goat moths amongst others.  The EBR project is also home to part of the TfL London Loop.


The EBR project's purpose is to replace and improve the existing containment structures in the ponds that capture rain water run-off from the Airfield. During the construction works, Morgan Sindall is working on the upper, middle and lower ponds, installing new pile walls, controls and pumping equipment which will help achieve Heathrow's' objective in improving the quality of rainfall runoff.

Visitors will arrive at the site compound and receive a briefing on the project, plus a visitor’s induction.

They will then move to the viewing area, overlooking the reservoir. From this location, they will be able to view marine piling works being undertaken from a barge in the pond and construction of the ‘penstock’ gates that will control the flow of water. On land, there will be deep excavations for a pump station, along with installation of utilities.

Finally, visitors will be taken for short walk around the site along the nature walk created by the project and will discuss the environmental considerations and mitigation measures employed.

Address Morgan Sindall Construction & Infrastructure Ltd
Camp 4
Eastern Balancing Reservoir
Great South-West Road (A30)


The main gate to site is off the A30 (Great South-West Road) into the Camp 4 Site.  On entering all personnel must report to the main MS offices immediately to sign in & receive an induction/ site briefing.

Please note that the site entrance can only be accessed from the South-West approach (towards terminal 4) as it is a dual carriageway.

Parking available yes

From the site entrance please follow the road round to your left where you will find the site car park.  Please note, there is a one way system within the site car park.

Length of Visit 1 and Half Hours
Maximum Group Size 10
Register by 17 Mar 2017
Disabled Access no
Child Restrictions no

Amanda Soundararaj

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