Poteau, OK water hardness

Tap water hardness
46mg/L
2.7gpg
Soft

Reported by Leflore CO. RWD #1 · July 2022

OK typical
152 mg/L
EPA health violations since 2016
0
Data
Utility report

Tap water in Poteau has about 46 mg/L of hardness, which is 2.7 grains per gallon. On the USGS scale that counts as soft. The number comes from Leflore CO. RWD #1, dated July 2022.

Poteau on the hardness scale, with nearby cities
060120180240300360+OK typical 152Coweta: 92 mg/LCoweta 92Bixby: 92 mg/LBixby 92Broken Arrow: 92 mg/LBroken Arrow 92Catoosa: 92 mg/LCatoosa 92Tulsa: 110 mg/LTulsa 110Sapulpa: 111 mg/LSapulpa 111Claremore: 131 mg/LClaremore 131Muskogee: 138 mg/LMuskogee 138Jenks: 148 mg/LJenks 148Owasso: 153 mg/LOwasso 153Poteau 46mg/L as calcium carbonate060120180240300360+OK 152Coweta: 92 mg/LCoweta 92Bixby: 92 mg/LBixby 92Broken Arrow: 92 mg/LBroken Arr. 92Catoosa: 92 mg/LCatoosa 92Muskogee: 138 mg/LMuskogee 138Jenks: 148 mg/LJenks 14846 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Poteau sits 106 mg/L below the typical Oklahoma figure of 152. None of the 10 nearest cities we track has softer water. The range nearby runs from 92 mg/L in Coweta to 153 in Owasso.

What 46 mg/L means at home

Soap and shampoo lather with very little product. Kettles and showerheads stay mostly free of white crust.

Some people notice that soap feels slow to rinse off in soft water. That slippery feel is normal and harmless.

Hardness is not a health problem, and EPA sets no limit for it. It is a matter of scale and soap.

What to do about it

Nothing, as far as hardness goes. At 46 mg/L a softener would have almost nothing to remove.

Carbon filter

If the water tastes of chlorine, a pitcher or faucet carbon filter takes care of that. It does not change hardness.

EPA record for Poteau's water system

Leflore CO. RWD #1 · PWSID OK3004003

No health-based violations since 2016

Serves about 1,758 people from surface water.

Health-based
0
Monitoring or reporting
17
Open now
5

Health-based means a contaminant above its legal limit or a missed treatment step. Monitoring and reporting violations are late or missing tests and notices. Source: EPA ECHO, 2026Q3 export, violations with periods starting 2016 or later. Full EPA record.

Questions

Is Poteau water hard?

No. It measures about 46 mg/L (2.7 grains per gallon), which the USGS classes as soft.

What is the water hardness in Poteau in grains per gallon?

About 2.7 gpg. One grain per gallon equals 17.1 mg/L, so 46 mg/L divided by 17.1 gives 2.7.

Has the Poteau water system had EPA violations?

EPA records show no health-based violations for Leflore CO. RWD #1 since 2016. There were also 17 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 34 cities in Oklahoma

Hardness data: TapWaterData US Water Hardness (utility report, July 28, 2022), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.