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 government 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 | WATER HARDNESS |
|---|---|
| 0 - 50 PPM 0 - 2.917 GPG |
Is soft. |
| 51 - 100 PPM 2.975 - 5.835 GPG |
Is moderately soft. |
| 101 - 150 PPM 5.893 - 8.752 GPG |
Is slightly hard. |
| 151 - 200 PPM 8.811 - 11.670 GPG |
Is moderately hard. |
| 201 - 275 PPM 11.728 - 16.046 GPG |
Is hard. |
| 276 - 350 PPM 16.104 - 20.422 GPG |
Is very hard. |
| 350+ PPM 20.422+ GPG |
Is aggressively hard. |
