Water Supply Industry Interpretations and Advice

  • Area of Interest : Backflow prevention
  • Topic : Fluid category
  • Title : Pressure washers
  • Clause Reference : Schedule 2 paragraph 15 & G15.3
  • Reference Number : B07
  • Decision Date : June 2001

Pressure washers used for cleaning commercial hire plant and supplied by a 15mm bib tap which is connected to the mains supply, should be regarded as a Fluid Category 4 risk. A risk assessment should be carried out to establish if the risk may be higher, especially where the equipment or location to be cleaned could be contaminated with human or animal wastes.