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Minnesota Water Hardness Map

4 cities · average 8.3 GPG

Average hardness

8.3 GPG

Hardest city

Rochester 17 GPG

Softest city

Bloomington 5.2 GPG

Map — Minnesota cities by hardness

Very HardHardModerateSoft

Tier distribution

Very Hard1Moderate3

Cities ranked by hardness

1Rochester17 GPGVery Hard2Minneapolis5.7 GPGModerate3St. Paul5.44 GPGModerate4Bloomington5.2 GPGModerate