Chaul End Reservoir Extension

A new treated-water reservoir at Chaul End, near Luton, adds approximately 20 million litres of storage alongside the existing reservoir. The £10m extension is in service.[1][2]

Current position

Affinity Water reported on 29 September that the new reservoir had already supported supplies during the hot, dry summer of 2026.

Benefits

Combined storage is approximately 42 million litres, providing a larger buffer for Affinity Water’s supply network serving parts of Hertfordshire and Bedfordshire.

Latest developments

Urban Development & Housing · 29 September 2026

£10m Chaul End reservoir extension increases treated-water storage

Affinity Water’s new reservoir at Chaul End adds approximately 20 million litres of storage, taking combined capacity to around 42 million litres. The company says it supported supplies during summer 2026, increasing the buffer available to its Hertfordshire and Bedfordshire network. This is confirmation of an operating asset; its exact commissioning day is not reported.

Sources