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Our water hardness varies from 25 ppm to 325 ppm depending on the source of production. The average throughout the system is 125 to 200 ppm (7.3 to 11.7 grains per gallon).
It varies from 25 ppm to 325 ppm, depending on the source of production. The average throughout the system is 125 to 200 ppm (7.3 to 11.7 grains per gallon).