Phosphorus pollution is a growing problem in UK Waterways and it is a problem that future private sewage treatment plants must address.
Aleady, we are having enquiries from people who are being asked to reduce the Phosphate level of their sewage before they will be granted access to Mains Drainage and public sewers.
Phosphate causes exceesive growth of algae in rivers, ponds, lakes, etc. and this surface cover of the water blocks the light for aquatic plants and animals and reduces the oxygen levels in the water. This is called Eutrophication.
Phosphate occurs naturally, at low levels, as a result of decomposing organic matter and river bank erosion, containing Phosphorous Minerals, but by far the greatest source of Phosphorous Pollution is caused by Human activity and the products we use.
All plants and animals need some phosphorous for growth, (up to about 0.1mg/litre in lakes and rivers) but too much overpowers Nature's ability to process it without detrimental effects.
Government guidance recommends that river/pond/lake water should contain a maximum phosphate concentration of 0.1mg per litre.