Resource Consent CRC051724 allows the discharge of treated wastewater from the Treatment Plant Oxidation Ponds into the Pegasus Bay Coastal Marine Area via an ocean outfall.

View the reports provided to Environment Canterbury to maintain compliance with the Resource Consent.

Samples of the Wastewater discharging via the Ocean Outfall are taken and analysed for a range of contaminates on the following rotation.

Weekly Fortnightly Six Monthly Annually
Temperature Nitrate Nitrogen Arsenic Salmonella
pH Nitrite Nitrogen Cadmium Campylobacta
Dissolved oxygen Total Kejldahl Nitrogen Chromium Giardia
Five-Day Biochemical Oxygen Demand, BOD Total Phosphorus Dissolved Reactive Phosphorus Copper Cryptosporidium
Filtered BOD   Lead Human Enterovirus
Total Suspended solids   Nickel Human Adenovirus
Faecal Coliforms   Zinc Organochlorine pesticides
Enterococci   Mercury Organophosphate pesticides
Escherichia coli     Polychiorinated biphenyls
Ammoniacal Nitrogen     Polycyclic aromatic hydrocarbons

The resource consent contains a range of thresholds for the parameters, which when exceeded further investigation or remedial action is required.

Environmental Monitoring

Weekly water samples are taken from the following beach locations: South New Brighton Beach at Jellicoe Street, Sumner Beach at the surf club, New Brighton at the surf club. These samples are analysed for Faecal Coliforms and Enterococci and again thresholds apply.

Quarterly samples of shellfish (Tua Tua) are obtained from South New Brighton Beach at Jellicoe Street and the south end of Rockinghorse Road, and Sumner Beach at the Surf Club and, analysed for E Coli and human Enterovirus.
At five yearly intervals a collection of marine sediment samples are taken. These samples are analysed for:

  • Total organic carbon
  • Total nitrogen
  • Total phosphorus
  • Arsenic
  • Cadmium
  • Chromium
  • Copper
  • Lead
  • Mercury
  • Nickel
  • Zinc

The benthic invertebrates in these samples are also surveyed.
Again threshold levels apply.

Monitoring data is presented to Environment Canterbury for review at quarterly intervals.

Quarterly results and monitoring reports

Christchurch City Council monitors what’s happening at the Christchurch Wastewater Treatment Plant to make sure that we are meeting the conditions of our resource consent.

Christchurch City Council prepares annual and quarterly reports for ECan which summarise consent compliance.

Type Report
Quarterly Mo [PDF, 927 KB]nitoring Report November - January 2017 [PDF, 927 KB] [PDF, 952 KB]
Quarterly Monitoring Report August - October 2016 [PDF, 952 KB] [PDF, 1 MB]
Annual Annual Report 2015 - 2016 [PDF, 1 MB]
[DOCX, 547 KB]
Quarterly Monitoring Report May - July 2016 [DOCX, 547 KB]
Quarterly Mo [PDF, 821 KB]nitoring Report February - April 2016 [PDF, 821 KB] [PDF, 932 KB]
Quarterly Mo [PDF, 932 KB]nitoring Report November - January 2016 [PDF, 932 KB]
Quarterly Monitoring Report August - October 2015 [PDF, 963 KB] 
Annual Annual Report 2014 - 2015 [PDF, 1 MB] [PDF, 1.1 MB]
Quarterly Monitoring Report May - July 2015 [PDF, 1.1 MB]
Quarterly Monitoring Report February - April 2015 [PDF, 263 KB] 
Quarterly Monitoring Report November 2014 - January 2015 [PDF, 265 KB]
Quarterly Monitoring Report August - October 2014 [PDF, 263 KB] 
Annual Annual Report 2013 - 2014 [PDF, 179 KB] 
Quarterly Monitoring Report May - July 2014 [PDF, 158 KB]
Quarterly Monitoring Report February - April 2014 [PDF, 158 KB] 
Quarterly Monitoring Report November - January 2014 [PDF, 159 KB]
Quarterly Monitoring Report August - October 2013 [PDF, 159 KB] 
Annual  Annual Report 2012 - 2013 [PDF, 169 KB]
Quarterly  Monitoring Report May - July 2013 [PDF, 162 KB] 
Quarterly  Monitoring Report February - April 2013 [PDF, 158 KB] 
Annual  Annual Report 2011 - 2012 [PDF, 180 KB]
Annual Annual Report 2010 - 2011 [PDF, 209 KB]

Historical monitoring data

May 2010 - July 2010

February 2010 - April 2010

November 2009 - January 2010

August 2009 - October 2009

May - July 2009

February - April 2009

November 2008 - January 2009

August - October 2008

May - July 2008

February - April 2008

November 2007 - January 2008

August - October 2007

May - July 2007

February - April 2007