HOW HARD IS MY WATER?
Enter your zip code and see if you live in a hard water area with our water hardness tool. Lots of people live in hard water areas without knowing. How hard is your water?
*Disclaimer: The data in this tool comes to provide a general outline of water hardness throughout the USA. Water hardness figures are based on reports from goverment and private sources. We do not guarantee the water hardness figures are 100% accurate.
HOW IS HARD WATER MEASURED?
Hard water is measured in parts per million (PPM) and how many particles of hardness are dissolved in the water per million particles gives a rating. This rating has been developed over time to the following categories:
PPM / GPG | WATER HARDNESS |
---|---|
0 - 17 PPM 0 - 1 GPG |
Soft. |
17 - 60 PPM 1 - 3.5 GPG |
Slightly Hard. |
60 - 120 PPM 3.5 - 7 GPG |
Moderately Hard. |
120 - 172 PPM 7 - 10 GPG |
Hard. |
172 + PPM 10 + GPG |
Very Hard. |
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