Arizona has been reusing wastewater since the 1920’s, but new rules permitting direct potable reuse make it possible for utilities to plan new drinking water projects.  Treated wastewater would have to go through “a multistage, multi-barrier treatment process with controls, real-time monitoring, a whole lot of microbial monitoring and chemical monitoring,” according to hydrogeologist Chuck Graf. A new $2.2 million system is planned in Peoria, Arizona, but so far there are no takers. [Water Online]

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