Water Supply Industry Interpretations and Advice

  • Area of Interest : Water Quality
  • Topic : Preventing contamination
  • Title : Taste of TCP from flexible hoses
  • Clause Reference : Regulation 3(2)
  • Reference Number : WQ02
  • Decision Date : June 2000

House builders and developers are encouraged to install a single check valve on supplies to washing and dishwashing machines due to the problem, frequently encountered by customers, of a ‘TCP’ taste to water from both their cold and hot water taps, arising from the interaction of chlorine with unsuitable rubber flexible hoses.