CWater grade
St. Charles County, MO
Your water is hard.
8.2 grains/gal · 140 mg/L
Hard
SoftModerateHardVery hardExtreme
What this is costing you every day
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Type any address, city or ZIP and drop right onto the map. Every dot is a real hardness reading from one of thousands of USGS monitoring sites nationwide - colored soft to extreme. Tap one for the numbers, or search your street.
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Soft
Moderate
Hard
Very hard
Extreme / well
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