Oklahoma

Water Hardness Summary

 

City Water Hardness Data
Oklahoma City 154 PPM (mg/L) or 9 gpg
Tulsa 140 PPM (mg/L) or 8 gpg
Norman 152 PPM (mg/L) or 9 gpg
Lawton 161 PPM (mg/L) or 10 gpg
Boise City 272 PPM (mg/L) or 16 gpg

 

PPM = Parts Per Million

mg/L = Milligrams Per Liter

gpg = Grains Per Gallon