How sewage can be used to heat and cool buildings (Associated Press)
Climate experts say sewage is a largely untapped source of energy due to its stable temperature of approximately 70 F (21 C). Epic Cleantec, which makes water reuse systems for office and apartment buildings, is expanding into heat recovery after previously focusing on treating water for toilets and irrigation. Aaron Tartakovsky, co-founder and CEO of Epic Cleantec, said people have been conditioned to think that wastewater is dirty and should always be discarded, but his company recently launched two beers in collaboration with a brewer made from recycled shower and laundry water to illustrate novel ways to reuse it.