Maintenance work starting this week 

Tuesday 8 July 

Two essential maintenance projects on critical components of the Christchurch Wastewater Treatment Plant are being carried out this week. 

The work is being undertaken to maintain the reliability of the treatment processes at the plant. We're hopeful that the maintenance work will help us minimise odour events during future summer-to-winter transition periods. 

Each project will take approximately one day to complete, and work is weather dependent. We expect both projects will be complete by the end of this week. 

Sludge survey

Our contractors are carrying out a sludge survey on a number of the oxidation ponds. This will provide us with valuable information about the biological health of the ponds, which will help inform future decisions. The aerators on oxidation pond 1 will be shut down while our contractor is carrying out the survey to enable our contractors to work safely between the aerators. 

Electrical work at temporary sludge plant

Later this week the temporary activated sludge plant will be shut down for approximately four hours to allow for essential high voltage electrical work.  

Odour impacts 

We don't anticipate that this work will have a significant impact on odour, but it could contribute to a higher waste-load going into the ponds which could have a minor impact on odour over the next couple of weeks.

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.