“Chanute, Kansas, USA in 1950s.Due to continuous drought for five years, surface flow of the river ceased in 1956. After considering all other alternatives, the river was dammed just below the towns sewage outfall, and the treated wastewater was used to fill the potable water intake pool. For five months, the city reused its sewage, circulating it some eight to fifteen times.”( S. Vigneswaran, M. Sundaravadivel,Page 18)