The 7 treatment plants operated by the Council have resource consents from Environment Canterbury. These allow discharge of wastewater to either the land or ocean. Testing for suspended solids, biochemical oxygen demand, nitrogen, phosphorus, faecal coliform, and enterococci is undertaken as required by the resource consents. The Council also regularly tests water quality on the beach between The Pines Beach/Kairaki and Woodend ear the ocean discharge.

A 10-year infrastructure improvement programme aims to reduce the number of wastewater overflows resulting from rainfall. Improvements to the Rangiora system have been underway for 2 years and a similar improvement programme will begin in Kaiapoi in 2018.