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Written question asked by Gregory Stafford (Conservative) on Tuesday, 30 June 2026, in the House of Commons. It was due for an answer on Thursday, 2 July 2026. It was answered by Emma Hardy (Labour) on Wednesday, 8 July 2026 on behalf of the Department for Environment, Food and Rural Affairs.


Chlorine: Health Hazards

Question

To ask the Secretary of State for Environment, Food and Rural Affairs, whether water companies are required to retain records of chlorine residual measurements taken at individual domestic properties.

Answer

Water companies are required to monitor for chlorine as set out in Schedule 3 of The Water Supply (Water Quality) Regulations 2016. Chlorine residual measurements are part of companies’ routine compliance sampling programmes and are recorded and submitted to the DWI on each occasion. Chlorine site tests are routinely recorded on investigatory samples that require laboratory analysis.


Secondary information

Type
Written question
Reference
14685
Session
2026-27
Subjects
Health hazards Monitoring Water Chlorine
Link
View this Written question on www.parliament.uk