The Christchurch City Council currently monitors water quality at over forty waterways sites within Christchurch City monthly.
Sites are typically monitored for the following parameters:
- dissolved copper
- dissolved lead
- dissolved zinc
- Biochemical Oxygen Demand
- conductivity
- dissolved oxygen
- Enterococci
- Escherichia coli
- total water hardness
- total ammonia (ammoniacal nitrogen)
- Nitrate Nitrogen
- Nitrite Nitrogen
- Nitrate-Nitrite-Nitrogen
- Dissolved Inorganic Nitrogen
- pH
- Dissolved Reactive Phosphorus
- salinity
- Total Suspended Solids
- water temperature
- turbidity
The results of this monitoring are presented annually in a report that assesses differences between sites and over time, and compares the results to guideline levels, to determine sites and parameters of concern. The current and past reports can be found in the ‘Reports’ section below. The latest results are also presented in the interactive map below, which can be manipulated for sites and parameters of interest. More information on how to use this map can be found at the bottom of the facts, stats and figures page.
Reports
City-wide surface water quality reports
- 2019 [PDF, 6.3 MB]
- 2018 [PDF, 6.1 MB]
- 2017 [PDF, 4.6 MB]
- 2016 [PDF, 4.8 MB]
- 2015 [PDF, 5.9 MB]
- 2014 [PDF, 5 MB]
- 2014 (excluding South-West and Styx SMP) [PDF, 1.4 MB]
- 2013 [PDF, 3.3 MB]
- 2012 [PDF, 3.3 MB]
City-wide surface water quality summary brochures
- 2019 (Online Readable Version) [PDF, 8 MB]
- 2018 (Online Readable Version) [PDF, 3.1 MB]
- 2017 (Online Readable Version) [PDF, 2.4 MB]
- 2015 (Online Readable Version) [PDF, 2.2 MB]
- 2015 (Printable Version) [PDF, 2.2 MB]
Other monitoring reports
- Faecal source tracking of Avon and Heathcote Rivers, and Avon-Heathcote Estuary 2015 [PDF, 2.3 MB]
- Interim Global Stormwater Consent Wet Weather Surface Water Quality 2015 [PDF, 2 MB]
- Interim Global Stormwater Consent Wet Weather Surface Water Quality 2014 [PDF, 1.4 MB]
- Interim Global Stormwater Consent Wet Weather Surface Water Quality 2013 [PDF, 414 KB]
- Lake Forsyth/Te Wairewa Water Quality Monitoring 2019 [PDF, 1.6 MB]
- Lake Forsyth/Te Wairewa Water Quality Monitoring 2018 [PDF, 1.5 MB]
- Lake Forsyth/Te Wairewa Water Quality Monitoring 2017 [PDF, 1.3 MB]
- South-West SMP Surface Water Quality 2013 [PDF, 1.1 MB]
- South-West SMP Surface Water Quality 2012 [PDF, 576 KB]
- Styx River SMP Surface Water Quality 2013 [PDF, 908 KB]
- Water quality of instream springs in Waimairi and Wairarapa Streams 2015 [PDF, 10 MB]