Water Supply Industry Interpretations and Advice
- Area of Interest : Installation
- Topic : Pipework
- Title : Proximity of plastic supply pipes, sewers and drains
- Clause Reference : Schedule 2 paragraph 8
- Reference Number : I19
- Decision Date : February 2007
Where plastic supply pipes are laid in close proximity and parallel to either sewers or drains, to enable repairs to either pipe without interfering or disturbing the other it is recommended that a distance of approximately 350mm separating the supply pipe and sewer or drain be provided.