The Edwardian reservoir, which was built in 1902, is buried beneath an earth bank and stores water pumped into Ipswich from boreholes at Whitton before sending it on to homes and businesses.
Project Manager, Matt Humphrey, said:
“The reservoir is an amazing piece of construction. From the outside it just looks like a large, grassy bank but underneath is a huge concrete tank.
“It’s a massive space, supported by rounded steel columns, and holding 21 million litres of water. We have had a look around inside using a remote camera but we can’t wait to actually get inside and have a look around for ourselves.”
The inspection will only be possible once the reservoir has been drained down, a process which will begin on September 19. The first task will then be to remove 6,000 tonnes of topsoil from the roof and replace it with a layer of stones on top of a new waterproof membrane. Inside, the work involves a deep clean for the reservoir and a thorough check and repair of any damage to the 109-year-old tank, its supports and pipework.
Anglian Water is holding a public exhibition at the site today for interested stakeholders to view the plans.


Hear how United Utilities is accelerating its investment to reduce spills from storm overflows across the Northwest.