Thursday 11 June

Christchurch Wastewater Treatment Plant update

Aerator install on schedule 

We have some good news to kick off this week's update – we now have four aerators in place on the ponds, which marks a major milestone for this project. 

Work continues at speed, with four units in place and everything on schedule. We expect the eight large aerators to be installed by the end of the week, with commissioning set to begin early next week.

Progress continues on activated sludge reactor build 

Stone column installation is back in full swing, with 1020 of about 1600 columns installed to date. The team remains on track to complete installation by the end of July.

On the pipeline installation, work has begun on excavating the trench for the next section. The framework has also been removed from the first section which be backfilled soon, marking another step forward.

Preparation is also underway for the next phase of construction, with planning and discussions progressing for upcoming concrete works scheduled to begin in August.

Our sludge reactor project manager Thomas is looking  forward to seeing you at the upcoming community meeting, where the team will share more information and answer any questions.

Check out the render below showing roughly what the activated sludge reactor will look like once complete. 

Join us at a community meeting 

6pm–7.30pm, Wednesday 17 June 
He Waka Tapu, 161 Pages Road

At the meeting we'll give updates on: 

• Activated sludge plant construction – construction is charging ahead on site. Get an update from the Council's project manager. 
• Aerator installation – The first set of the new aerators is being commissioned the week of this meeting. Come along and hear an update on what we've completed so far, and the work still to come. 

We'll also have our operations manager and community liaison on hand to answer questions. 

There is no need to RSVP – just show up on the day.  

Our hydrogen sulphide dashboard is offline

Our hydrogen sulphide monitoring dashboard has been out of action since 9 June. We're investigating the issue and hope to have it back up and running soon. Don't worry, the data is still being recorded, it just isn't connecting through to our online dashboard. Here is the latest graph: 

Pond health, odour and what to expect this weekend

Pond conditions remain stable, although the water continues to appear greener than usual for this time of year due to lingering algae. The current cold snap may shift conditions more fully into winter mode.

Our team is continuing regular monitoring, and at this stage we are not expecting any significant changes, including odour, over the weekend. The pond tracker remains unchanged.

Stay updated

We want everyone to be able to stay updated on what's happening at the Christchurch Wastewater Treatment Plant, and we regularly post new information on ccc.govt.nz/wastewaterfire 

You're welcome to send this update to your networks. If you know someone in the community who doesn’t have email or internet access, please print this newsletter off and pass it to them.

If you know of anyone who would like to receive this e-newsletter they can subscribe online. 

If you have any questions, or would like further information on the project, please call us on 03 941 8999 or 0800 800 169 or email wastewater@ccc.govt.nz  

Thanks for your patience and understanding. We’ll be in touch again soon.