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Tennessee Water Hardness Map

5 cities · average 4.4 GPG

Average hardness

4.4 GPG

Hardest city

Knoxville 5.5 GPG

Softest city

Memphis 2.8 GPG

Map — Tennessee cities by hardness

Very HardHardModerateSoft

Tier distribution

Moderate4Soft1

Cities ranked by hardness

1Knoxville5.5 GPGModerate2Murfreesboro4.9 GPGModerate3Nashville4.4 GPGModerate4Chattanooga4.25 GPGModerate5Memphis2.8 GPGSoft