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The 12 U.S. Cities With the Softest Tap Water

The 12 U.S. Cities With the Softest Tap Water

The Hardest Tap Water in America: 15 Cities, Verified

The Hardest Tap Water in America: 15 Cities, Verified

A ranking of the 15 U.S. cities with the hardest tap water — verified against each city's own utility report, not source-water estimates — plus the famous names that didn't make the cut and why hardness drives humidifier white dust.

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