Hardness does not pose a health risk to humans. In fact, calcium and magnesium in your drinking water can help ensure you get the average daily requirements for these minerals in your diet.
Hard water classifications:
- soft 0 - 17.1 parts per million (ppm)
- slightly hard 17.1 - 60 ppm
- moderately hard 60 - 120 ppm
- hard 120 - 180 ppm
- very hard 180 or more ppm
Hard water can cause mineral buildup on plumbing pipes and fixtures that can lead to lower water pressure and lower efficiency of electric water heaters; can cause build-up of deposits on dishes, utensils and laundry basins; and can cause soaps and detergents to perform poorly. It can also affect the the taste of the water making drinks like coffee taste bitter.
Hardness as CaCO3
ACTION IS OPTIONAL
There is currently no health-based standard for Hardness in drinking water. Hardness levels exceeding 120 ppm should be considered for treatment.
- Ohio Department of Health - Private Water Systems Program - Water Quality
- Water Systems Council - wellcare® information for you about Hardness in Drinking Water