Get the latest news and meeting reports on the wastewater treatment plant recovery.
31 January 2023
We have published updated hydrogen sulphide graphs on the Air, water quality and house-testing results page, under the combined site readings drop-down menu. The updated graphs are for the period 18 January 2023 to 30 January 2023.
16 December 2022.
We have just received from FENZ their Fire Investigation Report – Shuttle Drive, Bromley, Christchurch City [PDF, 5.1 MB].
Consequently, we have not had an opportunity to consider it fully. Our own investigation is ongoing and we will not be commenting further.
2 November 2022.
This graph shows how the hydrogen sulphide levels coming from the oxidation ponds has significantly decreased over the four months from 10 June to 10 October 2022.
The activated sludge plant was made operational on 28 July, with the biology reaching full maturity on 17 August, despite the challenges of growing the biology over the middle of winter.
It took four weeks for the better-quality wastewater to flush through our network of six ponds, with the odour substantially reduced by mid-September. This was in line with the timeframes that we promised the community we'd work to.
30 September 2022.
With hydrogen sulphide levels dropping and the days warming up, it might be tempting to clean any discolouration off your house that might have been caused by a chemical reaction between lead paint and hydrogen sulphide.
We ask that you keep waiting. Before we begin encouraging people to clean their homes, we'd like to see at least four weeks of low hydrogen sulphide levels and improved weather to get an idea of how any discolouration fades.
We're about to start monitoring some 'test houses' and will provide updates on our website to show how the discolouration improves.
If you absolutely must clean your house now, make sure you're familiar with our list of dos and don'ts that we published last month.
Do:
Don't:
The Ministry of Health(external link) has more information about lead-based paint.
Our team is keeping a register of homes that have reported paint discolouration. If your home has discolouration and you haven't let us know, or if you'd like more advice about what to do, email wastewater@ccc.govt.nz.
Christchurch Wastewater Treatment Plant meeting between CDHB, ECAN and Christchurch City Council.
Action points:
Christchurch Wastewater Treatment Plant meeting between CDHB, ECAN and Christchurch City Council.
Action points:
Christchurch Wastewater Treatment Plant meeting between CDHB, ECAN and Christchurch City Council.
Action points:
Wastewater Treatment Plant Communications Advisory Group minutes [PDF, 592 KB].
Christchurch Wastewater Treatment Plant meeting between CDHB, ECAN and Christchurch City Council.
Action points: