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Montana Water Hardness

2 cities · average 9.6 GPG

Average hardness

9.6 GPG

Hardest city

Billings 10.8 GPG

Softest city

Great Falls 8.4 GPG

Tier distribution

Hard2

Cities ranked by hardness

1Billings10.8 GPGHard 2Great Falls8.4 GPGHard