Arkansas vs Tennessee: Whose Tap Water Is Harder?
Water Hardness in Arkansas (38 PPM) vs Tennessee (130 PPM) — a 110% gap between neighbors, explained with July 2026 data.
Arkansas and Tennessee share a border, but for water hardness they don't share much else: Arkansas averages 38 PPM (rank #1 of 51) and Tennessee averages 130 PPM (rank #29) as of July 2026 — a 110% gap between neighbors.
| Arkansas | Tennessee | U.S. benchmark | |
|---|---|---|---|
| Average hardness | 38 PPM | 130 PPM | 120 PPM |
Arkansas in context
Arkansas averages 38 PPM — genuinely "soft" water on the USGS scale and 68% softer than the national average of 120 PPM (rank #1 of 51, 1 = softest). Softening equipment is generally unnecessary here.
Tennessee in context
Tennessee averages 130 PPM — "hard" on the USGS scale and 8% harder than the national average of 120 PPM (rank #29 of 51, 1 = softest). Expect visible scale and spotting; a softener starts paying for itself in appliance life at this level.
Full local breakdowns: Arkansas · Tennessee · 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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