Phosphate


80.5% removed relative to how much phosphate we were discharging in the 1990's


Biochemical oxygen demand


71.8% removed since 1990’s equivalent to 5,400 tonnes per annum 


Ammonia


72.1% removed since 1990’s to Dec 2020, equivalent to 1,500 tonnes per annum 

Phosphate, Ammonia and Biochemical oxygen demand all impact the health of rivers