The hardness of you water is determined by the amount of calcium and magnesium in it. If you request a hardness test the following index will show you where your water stands.
The costs for this test is $32
Hardness Index
PPM
Grains
Type
0 - 60
0 - 3.5
Soft
60 - 180
3.5 - 10.5
Moderate
180 - 513
10.5 - 30
Hard
513+
30+
Very Hard
Hardness Conversion PPM (mg/L) to Grains per Gallon
Grains per Gallon = Hardness mg/L as CaCO3 X 0.058
