Updates for residents and businesses near the Christchurch Wastewater Treatment Plant site.
Contractor appointed for activated sludge reactor
The main construction contract for the Christchurch Wastewater Treatment Plant's activated sludge reactor has now been awarded to HEB Construction, marking a major milestone for the upgrade.
We’re working closely with the contractor to get the site established as soon as possible, with construction expected to start early in the new year.
This work follows the demolition of the fire-damaged trickling filters earlier this year, clearing the way for the new reactor. Construction is expected to take about three years, with commissioning targeted for 2028.
The new reactor will be a substantial structure, 67m x 67m and 7m high, housing a blower room to mix air with incoming wastewater. The design process has been accelerated by working closely with contractors and using 3D design technology. Once construction begins, our goal is to move quickly, with commissioning of the plant currently targeted for 2028.
Community meeting planned for December
A community meeting is planned for December, where Council staff will be on hand to answer questions about the activated sludge reactor project, the upcoming clarifier work, and ongoing operations at the treatment plant. This will be an opportunity for residents to learn more about the upgrades and share feedback.
Once a date is confirmed we'll share the information through a range of channels, including our e-newsletter, this page of the website and a letterbox drop to surrounding residents and businesses.
How to stay informed
If you’re a neighbouring resident or business, please email wastewater@ccc.govt.nz with "Neighbour Subscribe" in the subject line. We will send you updates as we receive confirmation of upcoming concrete pour dates.
This webpage will be regularly updated as information is confirmed.