Capital upgrade programme
We have an extensive 30+ year upgrade programme planned which involves new and upgraded pipework to provide flood alleviation, and attenuation and treatment facilities to improve the quality of the final discharge. The total budget for the next 10 years is $15.1 million (uninflated). We propose to construct stormwater treatment and attenuation sites at the discharges to the Ashburton/ Hakatere River at West Street, Chalmers Avenue and Trevors Road. These are likely to include grassed basins and planted swales to slow down, filter and clean the water before discharge. We also propose a new, enlarged stormwater pipeline parallel to West Street to take stormwater from the surrounding area to the new treatment facility.