Kerikeri Wastewater Treatment Plant
Project details
Project type | Wastewater infrastructure |
Project value | $27.1 million |
Project status | Project completed |
The Kerikeri Wastewater Plant is the Council’s biggest ever infrastructure project and its ability to add hundreds of new customers to the sewer network is a game-changer for Kerikeri. The new facility significantly reduces the town’s reliance on septic tanks and other on-site disposal systems.
The new wastewater treatment plant was certified as completed on 23 October 2020 and is now up and running. The process of switching Kerikeri properties over to the new system was completed in May 2021.
The facility will allow the Far North’s fastest growing urban centre to accommodate new residents and businesses without having to spread outwards. More than 1400 properties in central Kerikeri will benefit from the sewerage scheme.
Project budget
The total cost of the project was $27.1 million, which will be offset by a $7.31 million subsidy from the Ministry of Health.
Scheme benefits
The new treatment plant is able to:
- treat 1000 cubic metres of wastewater per day (three times the capacity of the previous plant at Shepherd Road)
- treat waste from 1090 properties already connected to the Shepherd Road plant
- add another 350 central Kerikeri properties that currently rely on septic tanks.
A further 350 to 400 new properties within the expanded reticulation network can also connect to the system. The actual capacity of the new plant will be confirmed when it has operated in both dry and wet weather flow conditions.
The treatment plant updates the technology being used to treat Kerikeri’s wastewater emphasising efficiency, reliability and expandability.
The new connections improve quality of life, and of the local environment, by removing the need for hundreds of septic tanks.
The project supplies a long-term solution to an ongoing (medium-term) problem (full-capacity operation of existing plant).
Area of benefit
The Kerikeri Wastewater Plant is connected to homes and businesses in the scheme’s 'Area of Benefit' via 27 kilometres of new pipes. The new plant is three kilometres out of town on Okura Drive.
Project milestones
First sod turning on site, 13 March 2018.
The first sod turning on the site in 2018 signalled the beginning of the much anticipated project which has added hundreds of new customers to the Kerikeri sewer network.
Pictured are (left to right) Deputy Mayor Ann Court, Mayor John Carter, Broadspectrum Chief Executive Urban Infrastructure Sandra Dodds, United Civil Construction Project Manager Greg Whitehorn and Minister Sid Kingi.
Construction starts, May 2018
The construction contract was awarded to Broadspectrum (New Zealand) Ltd. Stage 1 of construction included forming an access track to the rural site, requiring strict erosion and sediment controls.
United Civil Construction Ltd completed a 28.5 km sewerage network expansion around central Kerikeri to allow an initial 350 properties to connect to the scheme.
Concrete wall panel construction, May 2019
Construction began on the largest single component – concrete wall panels for the decant tank. About 70 pre-cast concrete panels, each weighing 11 tonnes took up to three months to install by crane.
Construction is completed, October 2020
Construction work on the treatment plant was certified as completed.
Commissioning process ends, November 2020
Initiation of the biological processes at the heart of the treatment plant made it ready to receive and treat wastewater.
Dawn blessing opening ceremony, 18 December 2020.
The treatment plant was officially opened on Friday 18 December with a dawn blessing on the site by kaumatua of Ngāti Rēhia, Ngāti Rāhiri and Ngāti Kawa. 30 guests representing local hapū, Northland DHB, contractors, neighbouring landowners, and FNDC elected members and staff attended the event.
Pictured - Isaiah Apiata (foreground) and FNDC senior Māori liaison officer Ted Wihongi lead a dawn blessing of Kerikeri's new treatment plant.
Connection is completed, May 2021
The connection of homes and businesses to the new sewerage system was completed. If required, the new plant is designed to allow for expansion in two stages, with each stage allowing for another 800 to 820 properties to join.
The Final Phase in 2021
Decommissioning of the existing treatment plant in Shepherd Road.
Gallery
Location
Okura Drive, Kerikeri 0230 View Map