Question to the Department for Environment, Food and Rural Affairs:

To ask the Secretary of State for Environment, Food and Rural Affairs, pursuant to the answer of 8 September 2026 to Question 22817 on Reservoirs: Cambridgeshire, what was the level of a) nitrates and b) phosphates found in water sources used to fill Grafham Water.

Information on water quality monitoring is available on GOV.UK through the Water Quality Explorer. The sample point most relevant to your query on Grafham Water is 22M03.

Further information may be available from Anglian Water Services who can provide details of Anglian Water's monitoring activities in the area and how it takes nutrient levels into account when abstracting water.