The Christchurch City Council currently monitors the water quality at over forty sites in waterways within Christchurch monthly. Environment Canterbury monitors waterways in Bank Peninsula.

There is the potential that the Christchurch City Council will also undertake additional sampling in waterways in Banks Peninsula that are within settlement areas, as part of the Comprehensive Stormwater Network Discharge Consent.

Water quality is 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.