Water supplied by the public water supply system is sometimes referred to as mains water. Pipework that delivers the public water supply is sometimes referred to as a water main.Access to safe water is essential for good health. The 2030 Agenda for Sustainable Development recognised access to safe drinking water and sanitation as a human right. However, in the foreword to the 2019 World Water Development Report, UNESCO conceded that: “nearly a third of the global population do not use safely managed drinking water services and only two fifths have access to safely managed sanitation services.”

First of all the water supply process is the collection of rainwater in reservoirs, either from rivers and streams or from groundwater. This is pumped to water treatment works where it is treated and then stored in covered reservoirs before being pumped out via a distribution network of pipes and pumping stations.

Domestic connection:

1. Washing (washing machines, dishwashers and so on).
2. Cooking.
3. Sanitary facilities (toilets, bathrooms, showers and so on).

Non-domestic connection:

1. Commercial or industrial purposes.
2. Outside garden taps.

Swimming pools.