“…This is a rapidly growing area that serves the hydraulic fracking industry, military operations, and emergency relief for plant failure or after natural disasters. A range of technologies ranging from filtration membranes to reverse osmosis to ion exchange to electrocoagulation are in use, with scales that could serve a small cluster of houses all the way to neighborhoods (Griffith, Shumakov, Akbayev, & Fejervary, 2015;Moro, 2018;Park, An, Park, & Oh, 2015;Ramli & Bolong, 2016;Yu, Choi, Choi, Choi, & Maeng, 2018). Quotations for water and wastewater treatment from several of the mobile operators translate into numbers that are very competitive with current water charges.…”