Water Hardness in Connecticut
8 counties — Average 45.6 PPM (Soft)
Connecticut Water Hardness Map
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Connecticut
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All 8 Counties — By Water Hardness
Source: USGS Water Quality Portal
Frequently Asked Questions
How hard is the water in Connecticut?
Connecticut has an average water hardness of 45.6 PPM, classified as soft. Out of 8 counties, 6 have soft water, 2 moderately hard, 0 hard, and 0 very hard.
Which Connecticut counties have the hardest water?
See the county table above for a complete breakdown by hardness level.
How do I check water hardness for my Connecticut address?
Enter your ZIP code in the search box above to see your area's estimated water hardness, classification, and water utility information.