Hard water in Elmwood Park, NJ
County estimate from 1,255 water samples in Bergen County · July 2026
- NJ typical
- 80 mg/L
- EPA health violations since 2016
- 3
- Softener for 3 people
- 24k grain
- Data
- County estimate
Water samples from around Elmwood Park put hardness at about 212 mg/L (12.4 gpg), which would be very hard on the USGS scale. Treat this as a rough guide: it is the median of 1,255 samples taken across Bergen County, mostly wells and streams, not a test of Elmwood Park's treated tap water. One more reason for caution: EPA lists Elmwood Park's water system as using surface water, which is often softer than the wells behind the county figure.
Elmwood Park sits 132 mg/L above the typical New Jersey figure of 80. None of the 10 nearest cities we track has harder water. The range nearby runs from 64 mg/L in Paterson to 212 in Garfield.
What 212 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 212 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 × 12.4 gpg = 2,790 grains a day. A 24,000-grain unit regenerates about every 8 days.
EPA record for Elmwood Park's water system
3 health-based violations since 2016
Serves about 20,374 people from surface water.
- Health-based
- 3
- Monitoring or reporting
- 11
- Open now
- 2
EPA lists this system as serving Elmwood Park.
| Contaminant or rule | Violations | Period | Status |
|---|---|---|---|
| Total trihalomethanes (TTHM)a disinfection byproduct | 3 | 2016–2018 | 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 Elmwood Park water hard?
Yes. It measures about 212 mg/L (12.4 grains per gallon), which the USGS classes as very hard.
What is the water hardness in Elmwood Park in grains per gallon?
About 12.4 gpg. One grain per gallon equals 17.1 mg/L, so 212 mg/L divided by 17.1 gives 12.4.
What size water softener do I need in Elmwood Park?
For 3 people using 75 gallons each per day, 12.4 gpg works out to about 2,790 grains a day. A 24,000-grain softener covers that with a regeneration about every 8 days.
Has the Elmwood Park water system had EPA violations?
EPA records show 3 health-based violations for Elmwood Park Water Dept since 2016, involving Total trihalomethanes (TTHM). There were also 11 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Garfield212 mg/LVery hard
- Fair Lawn137 mg/LHard
- Paterson64 mg/LModerately hard
- Lodi212 mg/LVery hard
- Maywood96 mg/LModerately hard
- Passaic64 mg/LModerately hard
- Clifton64 mg/LModerately hard
- Hasbrouck Heights96 mg/LModerately hard
- Glen Rock105 mg/LModerately hard
- Prospect Park64 mg/LModerately hard
Hardness data: TapWaterData US Water Hardness (county estimate, July 4, 2026), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.