Waikanae treatment plant upgrade
A 30-month upgrade to increase earthquake resilience and to replace aging equipment at the Waikanae Water Treatment Plant started in February 2024 after the signing on 24 November of the contract for a $22 million upgrade.
Our why
This upgrade is part of our commitment to provide safe, clean, reliable and resilient drinking water to homes and businesses. The Waikanae Water Treatment Plant provides drinking water to more than 40,000 people in Waikanae, Paraparaumu and Raumati.
The project is stage two of a planned three-staged upgrade of the Waikanae Water Treatment Plant. These works are part-funded by a $5.2 million grant from the government, and include:
- enabling works to move utilities such as telecommunications lines and stormwater pipes out of the way for excavations needed for the clarifier (completed in 2022)
- building a rapid mix tank (to mix coagulants and flocculants which bind particles in the water)
- building a new clarifier (a large tank where the bound particles bound together)
- planned renewals to replace pumps and dosing equipment which are getting towards the end of their useful life, and
- safety improvements which include constructing a new building to house chlorine tanks and dosing systems.
The works will also increase the seismic resilience of the water supply for Waikanae, Paraparaumu and Raumati. The two-and-a-half-year project follows enabling works completed in 2022, which included relocating a stormwater line and other utilities to make way for the new equipment.
Latest news
5 March 2024 – After finalising consents and construction plans, we've started work on this major upgrade. Our first big job are the earthworks to prepare the area for building a new clarifier (a large tank that helps remove tiny particles from the river water).
We’re also building a new accessway to the treatment plant on Reikorangi Road. The first stage of this work involves closing the road shoulder for two weeks. Later, we'll be closing the northbound lane of Reikorangi Road for approximately six weeks. Our team will operate a stop/go system during work hours (7am–5pm Monday to Friday), and will reopen the lane after work hours. You may experience delays of up to five minutes while the lane is closed.
If you live in Reikorangi or travel that way, please take extra care over the next few months while our crew carries out this important work.
Stages
Dates | Activity |
2015 |
Stage 1 – completed:
|
2024–26 |
Stage 2:
|
2028 (planned) |