Prior to the commissioning of the Westport Wastewater Treatment Plant foul sewage and stormwater were often discharged to the same pipe which was then discharged to the receiving waterways. This stormwater infiltration now causes significant loadings on the plants during wet weather, with sometimes as much as ten times more flow entering the plants than during normal dry weather flow.
As some areas of Westport experience a considerable backup of sewage/stormwater during moderate to heavy rainfall, Council are investigating where stormwater infiltration can be removed. This may include the separation of stormwater at various residential properties.
Council would appreciate any efforts by property owners to separate stormwater from foul sewage lines on their properties, particularly in areas where problems exist. If you require advice please contact Council 0800 807 239.
