How hard is the water in Jerseyville, IL?
Reported by IL American-Jerseyville · May 2022
- IL typical
- 139 mg/L
- EPA health violations since 2016
- 0
- Softener for 3 people
- 24k grain
- Data
- Utility report
The water in Jerseyville carries roughly 108 mg/L of dissolved calcium and magnesium, or 6.3 grains per gallon. That is moderately hard water. The number comes from IL American-Jerseyville, dated May 2022. Reports for this system disagree, with values from 63 to 108 mg/L.
At 108 mg/L, Jerseyville is 31 mg/L below the typical Illinois figure of 139. Of the 10 nearest cities we track, 1 has softer water and 9 have harder. The range nearby runs from 87 mg/L in Edwardsville to 276 in Granite City.
What 108 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.
3 people × 75 gallons a day × 6.3 gpg = 1,422 grains a day. A 24,000-grain unit regenerates about every 16 days.
EPA record for Jerseyville's water system
No health-based violations since 2016
Serves about 8,412 people from groundwater.
- Health-based
- 0
- Monitoring or reporting
- 5
- 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 Jerseyville water hard?
Somewhat. It measures about 108 mg/L (6.3 grains per gallon), which the USGS classes as moderately hard.
What is the water hardness in Jerseyville in grains per gallon?
About 6.3 gpg. One grain per gallon equals 17.1 mg/L, so 108 mg/L divided by 17.1 gives 6.3.
What size water softener do I need in Jerseyville?
For 3 people using 75 gallons each per day, 6.3 gpg works out to about 1,422 grains a day. A 24,000-grain softener covers that with a regeneration about every 16 days.
Has the Jerseyville water system had EPA violations?
EPA records show no health-based violations for IL American-Jerseyville since 2016. There were also 5 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Alton190 mg/LVery hard
- East Alton190 mg/LVery hard
- Wood River128 mg/LHard
- Granite City276 mg/LVery hard
- Edwardsville87 mg/LModerately hard
- Collinsville276 mg/LVery hard
- East St. Louis157 mg/LHard
- Cahokia Heights157 mg/LHard
- Fairview Heights157 mg/LHard
- Swansea157 mg/LHard
Hardness data: TapWaterData US Water Hardness (utility report, May 16, 2022), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.