Written Question·Department for Environment, Food and Rural Affairs·UIN 81293

Rivers: Algae

Tabled: 13 October 2025
Answered: 20 October 2025

Question

Jim Shannon

Democratic Unionist Party — Strangford

To ask the Secretary of State for Environment, Food and Rural Affairs, what assessment she has made of the potential impact of blue-green algae on water quality in UK rivers.

Answer

Emma Hardy
The Environment Agency (EA) works with others including local authorities and Public Health England to manage waterbodies affected by blue-green algae and the risks they pose. The EA does not routinely monitor for blue-green algae but attends incidents an...
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