West London homes could be heated by sewage

Heat from sewage being processed at the Mogden Sewage Works in Isleworth could heat local buildings, as the local council has applied for funding to build a heat network for the area.
Mogden Sewage Works (c) Goolge satellite view
Once treated, water from the sewage plant is pumped into the rivers, but it is warm enough to be useful if the heat could be transferred from the wastewater to something useful.
To tap into this wasted heat source, Hounslow council has requested up to £11m of fund