Water from reservoirs
Reservoirs store water from rain that falls during the wetter parts of the year in preparation for when there is less rain. They have been built for over 5,000 years.
Reservoir water needs a higher level of treatment than groundwater, so we use several different processes to purify it to the high quality required by law.
Water arrives at our treatment works and flows through extremely fine filters to remove algae, insects, leaves, branches and any other objects.
Next, the water is fed into a chamber where chemicals are added to make any particles stick together.
Air is pushed up through the water forcing the particles to the surface where they are then removed.
After getting dosed with chlorine and lime to remove certain contaminants, the water flows into fine sand filter beds which trap any remaining particles.
The remaining water goes through a filtration process which removes any pesticides and impurities that are present.
The water receives a final dose of chlorine to kill any remaining germs and bacteria before it flows into our storage reservoirs and is supplied to our customers.