Grafham Water Treatment Works Resilience project

The project provides a back up to the water network supplying Northampton, Bedford, Milton Keynes and Huntingdon.

Left to right Andy Palmer (ICE East of England Regional Chair), Dean Kennedy (JN Bentley), Lewis Evans (Mott MacDonald), David Goodliff (ICE East of England Regional Council Member).
Left to right Andy Palmer (ICE East of England Regional Chair), Dean Kennedy (JN Bentley), Lewis Evans (Mott MacDonald), David Goodliff (ICE East of England Regional Council Member).
  • Updated: 15 August, 2017

Project facts

Project team:

  • Principal Designer – Mott MacDonald
  • Principal Contractor – JN Bentley
  • Client – Anglian Water

Cost:

£27.8m

Completed by:

25 May 2016

Websites:

Water Projects Online
Anglian Water

 

What will the project deliver?

The project spans across 15 different sites and includes a new reservoir, five pumping stations and over 3km of pipeline.

The reservoir site is screened by an earth embankment with over 1,500 trees planted, to restore any habitat lost by the development.

The original proposal included a new 37km long pipeline from Hannington Water Reservoir to Grafham. This would have faced major challenges and would, therefore, have been an expensive and risky project. This solution uses existing pipeline to deliver the project.

Local impact

The project will ensure that Anglian Water customers in the supply area have a more resilient clean water supply. Around 614,000 people now have secure access to clean water. Before this project, in the event of a prolonged outage at Grafham, these customers would have had no water supply.

Interesting facts

  • The 44 million-litre reservoir is the largest pre-cast concrete reservoir in Anglian Water's network. It stores clean water equivalent to 16 Olympic sized swimming pools. At peak times, over 1,000 litres per second of drinking water will be transferred through the reservoir
  • By opting to use existing assets and not build a new pipeline, the project reduced its total embodied carbon by 62% and reduced capital expenditure by 50%
  • From the first design meeting to the last drop of water going in, it has taken nearly 10 years to complete this project

Project images

Aerial view of service reservoir and pumping station
Aerial view of service reservoir and pumping station
Amphtill cut in
Amphtill cut in
service reservoir and team
Service reservoir and team

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