This is a question that can be best answered by your local water authority. Each municipality has their own set of rules and regulations when it comes to the installation of water mains. You can contact your local government office or visit their website to get more information on who is responsible for this type of work in your area.

The installation and repair of mains water pipes is generally the responsibility of your local water authority. If you're experiencing problems with your mains water supply, or if you need to install a new pipe, then you should contact your local authority for assistance.