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Arizona Water Hardness Map

10 cities · average 13.4 GPG

Average hardness

13.4 GPG

Hardest city

Scottsdale 20.6 GPG

Softest city

Surprise 2.9 GPG

Map — Arizona cities by hardness

Very HardHardModerateSoft

Tier distribution

Very Hard8Hard1Soft1

Cities ranked by hardness

1Scottsdale20.6 GPGVery Hard2Yuma20 GPGVery Hard3Mesa17 GPGVery Hard4Phoenix13.8 GPGVery Hard5Chandler13.45 GPGVery Hard6Peoria13 GPGVery Hard7Tempe12.3 GPGVery Hard8Gilbert10.79 GPGVery Hard9Buckeye9.8 GPGHard10Surprise2.9 GPGSoft