About us

Ensuring Water Quality

We are constantly collecting samples from across our treatment works, reservoirs and customer properties which each then undergo a series of tests in the laboratory to ensure they meet all drinking water standards.

Water Quality tests completed this month:


This is regulated by the government through the Drinking Water Inspectorate (DWI) whose main job is to check that water companies in England and Wales supply water that is safe to drink and meets the standards set in the Water Quality Regulations.

Inspectors carry out technical audits of each water company including:

  • An annual assessment of the quality of drinking water supplied by the companies
  • Inspections of the individual companies 

The audits include the results of the thousands of tests made each year to see if the water meets the standards.

It also carries out inspections to be sure that the results are reliable and give a true picture of the quality of the water supplied.