Clarifier #4 repairs on schedule 

Our team has been working hard on essential repairs to two of the Christchurch Wastewater Treatment Plant’s four clarifiers. Clarifier #3 has been back in service for almost two weeks following leak fixes, and repairs to Clarifier #4 are now also nearing completion. This work is expected to be complete by this Friday 28 March. 

Impacts on odour

The reduction of our temporary activated sludge plant to 50% capacity to enable these works is resulting in some odour. This is due to the increased load to the oxidation ponds. So far, the increase in odour isn't significant and seems to be localised to the area around the ponds/plant and along Cuthberts Road. 

As we head into autumn and temperatures cool down, the biology of the ponds also changes. This could also be contributing to the increase in odour coming from the ponds. 

Once the clarifier repairs are finished we can return the temporary activated sludge plant to 100% capacity which will reduce the load to the ponds and resulting odour. 

We continue to monitor plant operations closely during this time and tweak our operations where we can to reduce odour and keep the plant operating smoothly. 

Community meeting for neighbours of the plant 

Our first community meeting for neighbours of the plant is taking place next Tuesday evening. 

When: 6.15pm to 7.15pm on Tuesday 1 April

Where: He Waka Tapu, 161 Pages Road

It’s a chance for us to check in, answer some of your questions, and provide an overview of what to expect over the next few months. We’ve also set up a new page on our website with information relevant to neighbours of the plant.  

There is no need to RSVP, although if you have questions and cannot make it on the night, please feel free to email them through to wastewater@ccc.govt.nz and we will respond as soon as possible. 

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.