Hardness by State Hardest Cities Hardness Scale Softener Guide About & Method

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Louisiana Water Hardness

2 cities ranked by hardness.

Shreveport

7.8 GPG · 133 ppm

Lafayette

6.2 GPG · 106 ppm

Water hardness by US & Canadian city — GPG, ppm, source, and what to do about it.

Data sourced from USGS, EWG, and municipal annual water quality reports.

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