What Is Standard Water Hardness?
below 75 mg/L – is generally considered soft. 76 to 150 mg/L – moderately hard. 151 to 300 mg/L – hard. more than 300 mg/ – very hard. What is a good water hardness setting? If water hardness is between 0–3 grains per gallon, then your water is at the ideal water hardness and it …