15 are nitrogen only; 15 are freshwater and phosphorus only; 9 catchments cover phosphorus and nitrogen. Wales has 5 catchments and Scotland has 1 catchment (Loch Leven) where catchments are required to mitigate nutrient positivity 125% of nutrient load. Phosphorus is much harder to mitigate. ...
The latest trends in green design go far beyond energy and water efficiency to improve our daily lives.