Guidance notes


Here’s a handy summary of all our guidance notes so you can quickly access the ones you need.

Pre-planning

  • For anyone thinking about building

Building over or near to sewers

  • For anyone extending their home or building near to a sewer

Fire sprinklers

  • For anyone building a new home or flats in Wales

New water connections

  • For anyone who needs a new water connection to a property

New sewer connections

  • For anyone who needs a new sewer connection to a property

Water main self-lay

  • For developers who wish to construct their water mains themselves (or use another organisation to do this), these guidance notes will help developers apply for self-lay services
  • Note: you should also read our self-lay policy

New water main requisition

  • For anyone who is building new houses that can’t easily connect to an existing water main

New sewerage requisition

  • For anyone who is building new houses that can’t easily connect to an existing public sewer

Water main diversion or alteration

  • For anyone who wants to remove or alter water mains on their land

Sewerage diversion or alteration

  • For anyone who wants to remove or alter sewerage on their land

Sewerage adoption

Self-lay policy

  • For developers who wish to construct their water mains themselves (or use another organisation to do this), these guidance notes share the specifications to be used on our networks

Surface water incentive scheme

  • For anyone building a new site who has plans to remove surface water from the wastewater network, you may be eligible for our incentive scheme

Site managers guide to new connections

  • For any site managers who are working with us on new connections