Swindon Borough Council undertakes regular sampling of private water supplies to ensure that they meet the required standards for microbiological and chemical content.
Further Information
Extensive information, plus a questionnaire to complete if you require a private water supply to be checked, is contained in procedure notes, which are available as a downloadable pdf file:
Private Water Supplies - Procedure Notes (43Kb)
Public Water Supplies
Problems with public water supplies are dealt with by Thames Water. Their Operations Line telephone number is 0845 920 0800.