Soft water Posted: Monday, September 14th, 2015 in « Back to Glossary IndexAny water containing less than one grain (Related Articles: Chillin’ with Old Man Winter…Giving the Square Foot a Little Respect: gpm/ft2 Matters in Softening, TooAn Opportunity to Improve Capacity and Efficiency Testing of Cation Exchange Water SoftenersGlobal SpotlightReducing Water Use and Operating Costs Using Softened Makeup Water for Cooling Towers« Back to Glossary Index