Hard water in Fairborn, OH
Reported by Fairborn Public Water System · January 2023
- OH typical
- 113 mg/L
- EPA health violations since 2016
- 0
- Softener for 3 people
- 24k grain
- Data
- Utility report
The water in Fairborn carries roughly 232 mg/L of dissolved calcium and magnesium, or 13.6 grains per gallon. That is very hard water. The number comes from Fairborn Public Water System, dated January 2023.
At 232 mg/L, Fairborn is 119 mg/L above the typical Ohio figure of 113. Of the 10 nearest cities we track, 9 have softer water and 1 has harder. The range nearby runs from 139 mg/L in Bellbrook to 356 in Xenia.
What 232 mg/L means at home
Scale forms fast here. Kettles and coffee makers need regular descaling, and showerheads clog unless you clean them.
Tank water heaters collect mineral sediment that insulates the water from the burner, so flushing the tank matters more than usual.
Dishes and glass shower doors spot easily. Soap scum and a dull film on hair or laundry are common complaints.
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
At 232 mg/L most of the trouble is scale, and only a few things deal with it.
Ion-exchange water softener
The standard whole-house fix. It swaps calcium and magnesium for sodium or potassium and needs salt plus a drain. Size it with the calculator below.
Salt-free conditioner
No salt and no drain line. It changes how minerals form scale instead of removing them, so water still tests hard.
Reverse osmosis or carbon filter
Under-sink reverse osmosis removes minerals from drinking water only. Plain carbon filters improve taste but do not soften.
3 people × 75 gallons a day × 13.6 gpg = 3,053 grains a day. A 24,000-grain unit regenerates about every 7 days.
EPA record for Fairborn's water system
No health-based violations since 2016
Serves about 34,620 people from groundwater.
- 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 Fairborn water hard?
Yes. It measures about 232 mg/L (13.6 grains per gallon), which the USGS classes as very hard.
What is the water hardness in Fairborn in grains per gallon?
About 13.6 gpg. One grain per gallon equals 17.1 mg/L, so 232 mg/L divided by 17.1 gives 13.6.
What size water softener do I need in Fairborn?
For 3 people using 75 gallons each per day, 13.6 gpg works out to about 3,053 grains a day. A 24,000-grain softener covers that with a regeneration about every 7 days.
Has the Fairborn water system had EPA violations?
EPA records show no health-based violations for Fairborn Public Water System since 2016. There were also 3 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Beavercreek149 mg/LHard
- Riverside149 mg/LHard
- Huber Heights155 mg/LHard
- Xenia356 mg/LVery hard
- Dayton147 mg/LHard
- Oakwood148 mg/LHard
- Kettering147 mg/LHard
- Vandalia155 mg/LHard
- Bellbrook139 mg/LHard
- Shiloh155 mg/LHard
Hardness data: TapWaterData US Water Hardness (utility report, January 16, 2023), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.