Changing Places tells stories about greening Britain - initiatives by individuals, local communities, government or multi-national corporations that contribute to a sustainable future.
From Soil and Sock to Loch
Friday 18 November
Dylan Winter visits Forfar Loch in Scotland
Dylan Winter looks at the problem of pollution caused by phosphates entering freshwater lochs.
High concentrations of these chemicals cause algal blooms on the surface of the water in summer. This layer of algae prevents light penetrating so the plants below can't photosynthesise. This can affect the whole food chain.
While it's a nationwide issue, Dylan travels to Scotland to look at how conservation bodies and organisations are tackling the problem.
At Marlee Loch, part of the Lunan Lochs chain near Blairgowrie, Scottish Natural Heritage are working with farmers to change farming practices and avoid phosphorus entering the water courses.
At Forfar Loch it's phosphates from household waste water that cause the problem. Here, to improve the quality of the water and so benefit wildlife, the waste water treatment works has been upgraded and a Watersense Campaign has been launched, educating people about using low phosphate or phosphate free products in their washing machines and dishwashers.
