In August 2013, the twin alternating water softener unit with 24" FRP tanks, 24" and 50" brine tank and Fleck top mounted valve were delivered to a major company in Costa Rica. Feed water to the softener was city water. Its purpose was to lower the hardness in the water to drinking standards. Each softener produced 56,000 GPD. For more information click here: http://www.pureaqua.com/water-softeners.html