Hard water in Batavia, IL
Reported by Powers Water CO, Inc. · May 2022
- IL typical
- 139 mg/L
- EPA health violations since 2016
- 0
- Softener for 3 people
- 48k grain
- Data
- Utility report
Batavia water measures 358 mg/L (20.9 gpg) of hardness, very hard by USGS standards. The number comes from Powers Water CO, Inc., dated May 2022. Reports for this system disagree, with values from 222 to 358 mg/L.
Batavia sits 219 mg/L above the typical Illinois figure of 139. Of the 10 nearest cities we track, 7 have softer water and 3 have harder. The range nearby runs from 215 mg/L in St. Charles to 474 in Warrenville.
What 358 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 358 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 × 20.9 gpg = 4,712 grains a day. A 48,000-grain unit regenerates about every 10 days.
EPA record for Batavia's water system
No health-based violations since 2016
Serves about 26,098 people from groundwater.
- Health-based
- 0
- Monitoring or reporting
- 2
- Open now
- 0
EPA lists Batavia as the system serving Batavia. The hardness figure above comes from a different system's report, which TapWaterData uses for Batavia.
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 Batavia water hard?
Yes. It measures about 358 mg/L (20.9 grains per gallon), which the USGS classes as very hard.
What is the water hardness in Batavia in grains per gallon?
About 20.9 gpg. One grain per gallon equals 17.1 mg/L, so 358 mg/L divided by 17.1 gives 20.9.
What size water softener do I need in Batavia?
For 3 people using 75 gallons each per day, 20.9 gpg works out to about 4,712 grains a day. A 48,000-grain softener covers that with a regeneration about every 10 days.
Has the Batavia water system had EPA violations?
EPA records show no health-based violations for Batavia since 2016. There were also 2 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Geneva320 mg/LVery hard
- North Aurora238 mg/LVery hard
- St. Charles215 mg/LVery hard
- West Chicago287 mg/LVery hard
- Aurora287 mg/LVery hard
- Warrenville474 mg/LVery hard
- Elburn232 mg/LVery hard
- Sugar Grove419 mg/LVery hard
- Boulder Hill235 mg/LVery hard
- South Elgin395 mg/LVery hard
Hardness data: TapWaterData US Water Hardness (utility report, May 18, 2022), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.