Water Health Check: Hard Water

Grades tap water hardness anywhere on Earth from a shaded map built on real survey data.

iOSfree

Water Health Check grades tap water hardness anywhere using a shaded map built from real USGS field samples, utility reports, and geological surveys. It gives a quick regional answer instead of requiring a direct water test. It's aimed at people who want to know if their local water is hard without testing it themselves.

Website iOS

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