Hard water in Union Grove, WI
Reported by Harvest View Estates · August 2022
- WI typical
- 170 mg/L
- EPA health violations since 2016
- 1
- Softener for 3 people
- 32k grain
- Data
- Utility report
The water in Union Grove carries roughly 313 mg/L of dissolved calcium and magnesium, or 18.3 grains per gallon. That is very hard water. The number comes from Harvest View Estates, dated August 2022.
At 313 mg/L, Union Grove is 143 mg/L above the typical Wisconsin figure of 170. None of the 10 nearest cities we track has harder water. The range nearby runs from 136 mg/L in Sturtevant to 300 in Caledonia.
What 313 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 313 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 × 18.3 gpg = 4,118 grains a day. A 32,000-grain unit regenerates about every 7 days.
EPA record for Union Grove's water system
1 health-based violation since 2016
Serves about 400 people from groundwater.
- Health-based
- 1
- Monitoring or reporting
- 1
- Open now
- 0
| Contaminant or rule | Violations | Period | Status |
|---|---|---|---|
| Arsenicnaturally occurring metal | 1 | 2025 | Resolved |
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 Union Grove water hard?
Yes. It measures about 313 mg/L (18.3 grains per gallon), which the USGS classes as very hard.
What is the water hardness in Union Grove in grains per gallon?
About 18.3 gpg. One grain per gallon equals 17.1 mg/L, so 313 mg/L divided by 17.1 gives 18.3.
What size water softener do I need in Union Grove?
For 3 people using 75 gallons each per day, 18.3 gpg works out to about 4,118 grains a day. A 32,000-grain softener covers that with a regeneration about every 7 days.
Has the Union Grove water system had EPA violations?
EPA records show 1 health-based violation for Harvest View MHC since 2016, involving Arsenic. There were also 1 monitoring or reporting violation, which are about late or missing tests and notices.
Nearby cities
- Sturtevant136 mg/LHard
- Mount Pleasant136 mg/LHard
- Bristol270 mg/LVery hard
- Kenosha140 mg/LHard
- Burlington248 mg/LVery hard
- Caledonia300 mg/LVery hard
- Racine136 mg/LHard
- Muskego276 mg/LVery hard
- Pleasant Prairie140 mg/LHard
- Franklin210 mg/LVery hard
Hardness data: TapWaterData US Water Hardness (utility report, August 9, 2022), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.