Christchurch Wastewater Treatment Plant update

Tuesday 28 April

Some odour expected 

We're expecting there may be an increase in odour over the next few days due to the upcoming weather forecast. We're currently experiencing a period of settled weather, with cool nights, warm daytime temperatures, and minimal wind. Under these conditions gases can build up near the ponds overnight and then disperse more slowly into surrounding areas during the morning.

Overall, the ponds remain stable, particularly as we move through the most fragile part of the seasonal transition. Conditions continue to be monitored closely.

Odour status map update

There have been no changes to the ponds on the odour status map as they remain in a relatively stable condition. The treatment plant has shifted from red to orange. 

Aerator installation progress

Work continues to progress on installing more aerators across the ponds. 

We've removed some vegetation between Ponds 2A and 2B to improve vehicle access, which is needed to lay power cables for the new disc aerators. 

Once locations for the preparatory works are fully confirmed, further landscaping will take place as required. In the background, there is ongoing coordination and planning underway, with multiple teams meeting regularly to keep the installation programme moving.

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.