In Austria, heat is 'recycled' from the sewer

[Still Waters]

Vast amounts of hot water from household appliances, businesses and factories gurgle down the drain every day, wasting not only H2O but also another precious resource: heat energy.

Not, however, in the Austrian town of Amstetten, where a pilot project by the local utility company is "recycling" this energy from a place where normally few dare to tread -- the sewer.

https://uk.news.yaho...17.html#KR5flaB