Environment and Energy 7 min read

Environment Agency Grants Rare Drought Permit for Ardingly Reservoir as Water Levels Hit Historic Lows

Published on October 5, 2026

As the permit period begins, the focus will remain on the weather stations and the depth gauges at Ardingly. The six-month window provided by the Environment Agency offers a buffer, but it is a buffer that relies entirely on the cooperation of the elements. The transition from a state of drought to one of recovery is a slow and delicate process. Even with average rainfall, it will take months for the reservoir to reach levels that are considered safe for long-term supply. The residents of West Sussex and the 280,000 customers served by this system are now in a period of waiting, watching the skies and hoping that the predicted winter rains arrive in sufficient quantities to avert a more severe crisis in 2027.

The situation at Ardingly Reservoir is a stark reminder of the fragile relationship between infrastructure, regulation, and the natural environment. The granting of a rare drought permit is a signal of the severity of the situation, highlighting that even in a country known for its rain, water remains a finite and precious resource. As the Environment Agency and South East Water manage the reduction in flow to the River Ouse, the priority remains clear: keeping the water flowing to the public while praying for a wet winter to mend what the dry months have broken. For now, the region remains in a state of high alert, with the next six months proving decisive for the water future of Sussex.

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