
Regulations
Here you can find more information about water and wastewater regulations that you must follow.
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Water supply regulations
Understand more about the requirements and aims of the Water Supply Regulations 1999.
Plumbing systems
This section explains the requirements for installing a new plumbing system under the current water regulations.
Reduced Pressure Zone (RPZ) valves
Here you can read our approach to RPZ valves, devices that protect against potential backflow.
Southern Water - Your Water, Your Say Friday 9 June, 2023
"We’re making huge investments and changes to the way we tackle leakage, installing over 7,500 acoustic detectors to proactively detect leaks, fixing more than 22,000 leaks a year with our 300-strong expert team, working with local authorities to fix leaks on roads more quickly and using satellite technology to spot leaks using ground penetrating radar."

Keith Lough, Chair
"Our vision is to create a resilient water future for our customers in the South East. We now want to share what this means and what we’re planning to achieve."

Ian McAulay, Chief Executive Officer Southern Water
"Water plays a unique and vital role in all our daily lives. Without exception it is critical to our communities, homes, schools, businesses and environment. We commissioned this report to provide an independent view on the future of water in the South East, to support and inform our long term planning as we navigate our way through a time of great change both within the water sector and across wider society."
