Maps of Water Mains and Sewers
We can provide maps showing the approximate location of our public water mains and sewers to help you build safely and avoid damaging our assets.
Cost and timescales
Pricing information can be found on our schedule of charges here. To apply online, you will need a valid debit or credit card.
What you'll receive
We'll provide a map showing the location of public water mains and sewers near your property or development site. The map will be produced at a suitable scale based on the information you provide.
Please note that private drains and service connections are not always shown on our maps. We recommend carrying out a sewer trace before any excavation or construction work begins.
Other ways to view our maps
You can view our water and sewer records free of charge in one of our viewing rooms. To book an appointment, contact us at developer.services@dwrcymru.com or call 0800 917 2652.
You may also be able to view sewer records through your local authority.
Before you apply
Some areas are supplied by other water companies. If your property is outside our operating area, you may need to contact the relevant water or sewerage company instead. You can check this using our postcode checker.