How to Tell If You Have Hard or Soft Water

Most water lies somewhere in the spectrum between soft and hard.

A simple phone call can reveal whether you have hard or soft water.A simple phone call can reveal whether you have hard or soft water.
And if you have water on either extreme end of the spectrum, you've probably noticed the effects. If you have a rough time getting soap to lather or rinse from your skin, then you probably have very soft water. If there are mineral deposits around your water fixtures or left behind in the pot after you boil water, you may have very hard water. But the most accurate way to tell if you have hard or soft water is to conduct a test or consult a professional.

Contact the municipal water supplier in your city if your water is supplied by the city. Their contact information may be found on your water bill or through the city's official website under "public utilities/works." They will be able to tell you exactly how hard or soft your water is.

Contact your local county extension office if your water comes from a supply on your land. For a nominal fee, it will test your water and provide a complete report on its hardness and quality.

Purchase a water hardness testing kit (online or at your local hardware store) and test your water by following the manufacturer's instructions.

Interpret the results of any water hardness test based on the classification methods of the U.S. Department of the Interior and the Water Quality Association. Your report will be given in milligrams per liter (mg/l), parts per million (ppm) or grains per gallon. Soft water falls between 0 and 17.1 mg/l and ppm or between 0 and 1 grains per gallon. Slightly hard water falls between 17.1 and 60 mg/l and ppm or between 1 and 3.5 grains per gallon. Moderately hard water falls between 60 and 120 mg/l and ppm or between 3.5 and 7.0 grains per gallon. Hard water falls between 120 and 180 mg/l and ppm or between 7.0 and 10.5 grains per gallon. Very hard water is classified as anything over 180 mg/l and ppm or 10.5 grains per gallon.

Things You Will Need

  • Water hardness testing kit

About the Author

Based in Houston, Texas, Meg Butler is a professional farmer, house flipper and landscaper. When not busy learning about homes and appliances she's sharing that knowledge. Butler began blogging, editing and writing in 2000. Her work has appered in the "Houston Press" and several other publications. She has an A.A. in journalism and a B.A. in history from New York University.