Christchurch Wastewater Treatment Plant update

Tuesday 31 March

Odour mitigation options report to be considered on Thursday 

Councillors have raised a number of questions on the odour mitigation options report which was scheduled to be discussed at the Council meeting tomorrow (1 April).

The meeting will be adjourned so these questions can be fully addressed and reconvened on the afternoon of Thursday 2 April. 

This meeting will be livestreamed on the Council website. 

Pond health update 

Recent monitoring shows that dissolved oxygen levels in the ponds have dropped slightly. We think this is linked to the recent run of cloudy weather, which has reduced algae activity, rather than indicating a decline in overall pond health.

Importantly, community odour monitors are currently detecting minimal odour, which is a positive sign and consistent with stable conditions across the pond system.

Looking ahead, forecast sunny weather later in the week should support increased algae activity, helping lift oxygen levels and further support pond health. As always, our team will continue close daily monitoring and make operational adjustments if conditions change.

The long-term fix: activated sludge plant construction timelapse

Check out the latest timelapse showing all the activity that happened on site in March. 

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.