Louisiana vs Texas: Whose Tap Water Is Harder?
Water Hardness in Louisiana (100 PPM) vs Texas (268 PPM) — a 91% gap between neighbors, explained with July 2026 data.
Louisiana and Texas share a border, but for water hardness they don't share much else: Louisiana averages 100 PPM (rank #16 of 51) and Texas averages 268 PPM (rank #48) as of July 2026 — a 91% gap between neighbors.
| Louisiana | Texas | U.S. benchmark | |
|---|---|---|---|
| Average hardness | 100 PPM | 268 PPM | 120 PPM |
Louisiana in context
Louisiana averages 100 PPM — "moderately hard" on the USGS scale and 17% softer than the national average of 120 PPM (rank #16 of 51, 1 = softest). Most households here get by fine without a softener, though scale slowly accumulates in heaters and kettles.
Texas in context
Texas averages 268 PPM — "very hard" on the USGS scale and 123% harder than the national average of 120 PPM (rank #48 of 51, 1 = softest). At this level, scale buildup on heaters and fixtures is a when, not an if, and most households benefit from a softener.
Full local breakdowns: Louisiana · Texas · all states ranked.
State averages hide huge local swings. A certified home water test kit tells you your exact hardness and what's dissolved in your water — before you spend a dollar on treatment.
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