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. Find out your water hardness without buying a test kit.*
*The data in this tool provides 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.