How hard is the water in Oneonta, AL?

Tap water hardness
116mg/L
6.8gpg
Moderately hard

Reported by Oneonta Utilities Board · June 2022

AL typical
73 mg/L
EPA health violations since 2016
0
Softener for 3 people
24k grain
Data
Utility report

The water in Oneonta carries roughly 116 mg/L of dissolved calcium and magnesium, or 6.8 grains per gallon. That is moderately hard water. The number comes from Oneonta Utilities Board, dated June 2022.

Oneonta on the hardness scale, with nearby cities
060120180240300360+AL typical 73Albertville: 34 mg/LAlbertville 34Cullman: 40 mg/LCullman 40Center Point: 77 mg/LCenter Point 77Arab: 79 mg/LArab 79Rainbow City: 111 mg/LRainbow City 111Southside: 112 mg/LSouthside 112Odenville: 124 mg/LOdenville 124Attalla: 134 mg/LAttalla 134Springville: 149 mg/LSpringville 149Trussville: 155 mg/LTrussville 155Oneonta 116mg/L as calcium carbonate060120180240300360+AL 73Center Point: 77 mg/LCenter Poi. 77Rainbow City: 111 mg/LRainbow Ci. 111Odenville: 124 mg/LOdenville 124Attalla: 134 mg/LAttalla 134Springville: 149 mg/LSpringville 149Trussville: 155 mg/LTrussville 155116 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

At 116 mg/L, Oneonta is 43 mg/L above the typical Alabama figure of 73. Of the 10 nearest cities we track, 6 have softer water and 4 have harder. The range nearby runs from 34 mg/L in Albertville to 155 in Trussville.

What 116 mg/L means at home

You may see faint white spots on glasses and shower doors after the water dries.

Scale builds up slowly. A kettle or coffee maker needs descaling now and then, maybe every few months.

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

Optional. Plenty of households at this level live with it and descale the kettle now and then.

Water softener

Worth a look if spots on glass bother you, or if your tankless water heater manual asks for softer water.

Carbon filter

Improves taste and removes chlorine. It leaves calcium and magnesium in place.

Softener size for Oneonta

3 people × 75 gallons a day × 6.8 gpg = 1,526 grains a day. A 24,000-grain unit regenerates about every 15 days.

Size it for your household

EPA record for Oneonta's water system

Oneonta, UB of the City of · PWSID AL0000103

No health-based violations since 2016

Serves about 19,971 people from surface water.

Health-based
0
Monitoring or reporting
3
Open now
0

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 Oneonta water hard?

Somewhat. It measures about 116 mg/L (6.8 grains per gallon), which the USGS classes as moderately hard.

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

About 6.8 gpg. One grain per gallon equals 17.1 mg/L, so 116 mg/L divided by 17.1 gives 6.8.

What size water softener do I need in Oneonta?

For 3 people using 75 gallons each per day, 6.8 gpg works out to about 1,526 grains a day. A 24,000-grain softener covers that with a regeneration about every 15 days.

Has the Oneonta water system had EPA violations?

EPA records show no health-based violations for Oneonta, UB of the City of since 2016. There were also 3 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 91 cities in Alabama

Hardness data: TapWaterData US Water Hardness (utility report, June 6, 2022), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.