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Arizona Water Hardness

9 cities · average 15.3 GPG

Average hardness

15.3 GPG

Hardest city

Yuma 18.2 GPG

Softest city

Tucson 11.5 GPG

Tier distribution

Very Hard8Hard1

Cities ranked by hardness

1Yuma18.2 GPGVery Hard2Gilbert16.1 GPGVery Hard3Mesa15.8 GPGVery Hard4Tempe15.6 GPGVery Hard5Chandler15.5 GPGVery Hard6Glendale15.2 GPGVery Hard7Peoria15 GPGVery Hard8Phoenix15 GPGVery Hard9Tucson11.5 GPGHard