Help and resources
In this section, you can access helpful resources for our building and developing services. This includes our monthly levels of service reporting, health and safety requirements, handbooks and technical documents.
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Levels of service
Here you can find monthly reports on our performance and ability to complete relevant tasks with defined periods.
Health and safety
Learn more about the risks that building or development work can create, and the measures we’ll need you to take to help prevent problems.
Handbooks and technical documents
Here you can access all our handbooks and technical documents. This includes technical guidance for water and sewer connections.
Water regulations
Find out more about the Water Supply Regulations 1999. They set out how plumbing systems, water fittings and water‑using appliances should be designed, installed and maintained in England and Wales.
Reduced Pressure Zone (RPZ) valves
Reduced Pressure Zone (RPZ) valves help prevent backflow and protect the mains water supply from contamination. Find out what to do if you need one installed.
Plumbing systems
Understand the requirements for installing a new, compliant plumbing system under the current Water Regulations. This includes the right fittings, good system design and measures to prevent backflow.
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."
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."
Lawrence Gosden, Chief Executive Officer.
"Our Turnaround Plan set out to deliver a short sharp ambitious improvement by 2025, particularly in terms of our environmental performance. It includes four clear outcomes that we promised to deliver, improving our service to customers and the environment."
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