UK’s biggest water reuse system stays idle as drought exposes legal gap
Cambridge’s biggest water reuse system is ready. It still cannot be turned on. For thousands of residents in one of England’s driest regions, that means
Cambridge’s biggest water reuse system is ready. It still cannot be turned on. For thousands of residents in one of England’s driest regions, that means a missed chance to cut household demand just as reservoirs run low.
The system at the Eddington urban quarter in Cambridgeshire has sat idle since 2021 because the Drinking Water Inspectorate says it does not comply with drinking water regulations. The scheme, installed by Cambridge Water, was designed to recycle rainwater for non-drinking uses in homes across a mixed development that includes housing, student accommodation, research space, a primary school and a nursery.
Water savings blocked
Supporters of the project say it could save about 25 litres per person a day. That would add up across a large development. Instead, the water reuse network remains switched off, even as England’s water supplies move toward critical pressure and summer drought grips the east.
This summer, Cambridge Water and neighbouring Anglian Water both imposed hosepipe bans after reservoirs fell to low levels. The contrast is hard to miss. A system built to recycle rainwater sits unused while households across the region are told to use less.
Law change pressure
The blockage is now drawing calls for urgent legal change. The issue is not the technology itself, but the rules around it. The DWI has judged the Eddington scheme is not in line with current law, leaving the UK’s largest water reuse system unable to operate even though it was made ready five years ago.
That puts pressure on policymakers at a moment when water security is already a political issue in England. The Cambridgeshire case has also highlighted a wider problem: other water reuse schemes could face the same barrier if the law does not move fast enough.
For now, the system remains off. Thousands of litres a day. Unused.
