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Water: Storage

Asked by Tim FarronLiberal DemocratDepartment for Environment, Food and Rural AffairsTabled Answered 15 April 2026UIN 124511

The question

To ask the Secretary of State for Environment, Food and Rural Affairs, what estimate his Department has made of the level of national water storage capacity.

Answered by Emma Hardy

The Environment Agency’s National System Simulation Model, which includes 90% of England’s supply system, shows the current national total storage capacity of 2.03 billion cubic metres for public water use.

Havant Thicket reservoir is currently under construction and a further 9 new reservoirs are planned by water companies. These are expected to provide an additional water supply of over 700million litres per day by 2050.

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