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Auckland

 

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  • Number of wells: 3
  • Aquifer lithology: Sand, basalt and shellbed
  • Depth of wells: 46.7 - 64 m
  • Oxygen levels: 0 %
  • pH: 7.35 - 8
  • Temperature: 17.2 - 18.2 °C
  • Nitrate: 0 - 0.005 g/m3
  • Dissolved organic carbon: 0 - 0.7 g/m3
  • Sulfate: 0 - 2.5 g/m3
  • Land uses: Urban

Taupo

 

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  • Number of wells: 9
  • Aquifer lithology: Sand, ignimbrite, pumice
  • Depth of wells: 4.6 - 53.6 m
  • Oxygen levels: 5.4 - 67.4 %
  • pH: 6 - 7.5
  • Temperature: 12 - 15.8 °C
  • Nitrate: 0 - 5.7 g/m3
  • Dissolved organic carbon: 0 - 1.6 g/m3
  • Sulfate: 0 - 46 g/m3
  • Land uses: Urban and agricultural

Wellington

 

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  • Number of wells: 21
  • Aquifer lithology: Sand/gravel
  • Depth of wells: 5 - 114.6 m
  • Oxygen levels: 0.3 - 89 %
  • pH: 5.5 - 7.1
  • Temperature: 13.6 - 16.1 °C
  • Nitrate: 0 - 9.4 g/m3
  • Dissolved organic carbon: 0 - 5.5 g/m3
  • Sulfate: 0 - 34 g/m3
  • Land uses: Dairy, agriculture, urban, industrial

Canterbury

 

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  • Number of wells: 26
  • Aquifer lithology: Sand, gravel, peat
  • Depth of wells: 1.2 - 69.8 m
  • Nitrate: 0 - 22 g/m3
  • Oxygen levels: 1 - 100 %
  • pH: 5.46 - 7.57
  • Temperature: 7.3 - 16.1 °C
  • Nitrate: 0 - 22 g/m3
  • Dissolved organic carbon: 0 - 26 g/m3
  • Sulfate: 2.1 - 49 g/m3
  • Land uses: Urban, agricultural, reserve