Industrial Pollution, Dairy Farming, Agricultural Irrigation, Mining, Forestry...

Here are some facts

70 of all waterways nationally did not meet swimming standards
Data 2005- 2013 / as set out by MoH/MfE microbiological guidelines

650 increased in synthetic nitrogen fertiliser applied to agricultural land
since 1990, according to MfE in 2019

 

76 of New Zealand's Native Fish are
threatened with extinction
in our waterways

69 increase in dairy cattle
between 1994 to 2015 according to StatsNZ