Social & Preventive Medicine Environment and health b4054e0c Level of hardness in soft water A < 1meq/L B 1-3meq/L C 3-6meq/L D >6meq/L High-Yield Explanation Soft water: < 1 mEq/LModerately hard: 1-3 mEq/LHard water: 3-6 mEq/LVery hard water: >6 mEq/LPark 23e pg: 727