What is Water Hardness
Much has been written over the last seventy five years about water hardness, no universal definition exists. What constitutes various levels of hard water? Water Hardness is measured chemically by the amount of calcium bicarbonate and magnesium bicarbonate in a water sample. The sum of total hardness is measured in units called grains per gallon. This is solely for the purpose of sizing the right water softener equipment. The most common or scientific measurement is in a milligram per litter or part per million. (these measurements commonly used by laboratories.) A conversion from milligram or part per million is achieved by dividing by a factor of 17.1 This will give you the Grain Per Gallon conversion. Soft Water is measured at less than one grain per gallon. Slightly Hard Water is measured at 1 to 4 grains per gallon. Moderately Hard Water is measured at 4 to 7 grains per gallon. Hard Water is measured at 7 to 10 grains per gallon. Very Hard Water is measured at Over 10 grai