
Water is an essential need for individuals and commercial operations. Council provides sufficient quantities of potable water for domestic and commercial needs and public amenities. Council water management is required under a number of legal statutes.
Westport and Carters Beach water supply
The Westport Water Supply is from a creek catchment in the hills behind Westport and is transferred to the reservoirs by a series of underground tunnels and pipes. These tunnels combined, are over 1,900 metres in length and were constructed around 1903, which in those days was a remarkable feat. The water is then coagulated for colour sediment and bacteria removal, treated with lime for pH adjustment, UV for protozoa removal and chlorination for additional treatment of bacteria and viruses.
Reefton water supply
The Reefton Water Supply is sourced from an infiltration gallery located adjacent to the Inangahua River near The Strand. The infiltration gallery collects groundwater that has naturally filtered through river gravels before entering the water supply system.
The water is filtered to remove suspended particles, treated with UV for protozoa removal, chlorinated for protection against bacteria and viruses, and adjusted for pH to improve water quality and stability. Treated water is then pumped to a reservoir above the township before being distributed to consumers.
Punakaiki water supply
The Punakaiki water supply provides drinking water to the Punakaiki township and Ross Subdivision. Water is sourced from a catchment north of the township and conveyed to the treatment plant before distribution to consumers.
The water is filtered using Macrolite media, treated with UV for protozoa removal, chlorinated for protection against bacteria and viruses, and adjusted for pH to improve water quality and stability. Treated water is stored in a series of reservoirs before being distributed throughout the supply area.
Inangahua Junction water supply
The Inangahua Junction water supply is sourced from a shallow bore that collects naturally filtered groundwater from the surrounding river gravels. Water is pumped from the bore and treated before being supplied to the township.
The water is treated using calcite filtration for pH correction and UV disinfection for protection against microbiological contaminants. Treated water is then stored in a reservoir located in the hills southeast of the township before distribution to consumers.