Soft water Posted: Monday, September 14th, 2015 in « Back to Glossary IndexAny water containing less than one grain ( Related Articles: Ion Exchange Reactions: A ReviewHow Fast Can We Run? Ion Exchange Reaction ZonesCation Exchange, Part 1: Back to the BasicsThe Softening Performance Test for Water SoftenersHard to Lather, Easy to Fix« Back to Glossary Index About UsWater Conditioning & Purification Writers By Issue