Hard water in Troy Hills, NJ
Reported by Parsippany-Troy Hills Water Department · May 2025
- NJ typical
- 80 mg/L
- EPA health violations since 2016
- 2
- Softener for 3 people
- 24k grain
- Data
- Utility report
Troy Hills water measures 208 mg/L (12.2 gpg) of hardness, very hard by USGS standards. The number comes from Parsippany-Troy Hills Water Department, dated May 2025.
Troy Hills sits 128 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 92 mg/L in Boonton to 208 in Parsippany.
What 208 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 208 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 × 12.2 gpg = 2,736 grains a day. A 24,000-grain unit regenerates about every 8 days.
EPA record for Troy Hills's water system
2 health-based violations since 2016
Serves about 50,400 people from surface water.
- Health-based
- 2
- Monitoring or reporting
- 48
- Open now
- 0
TapWaterData ties Troy Hills to this system. EPA's service-area records do not name Troy Hills, so check the utility printed on your water bill.
| Contaminant or rule | Violations | Period | Status |
|---|---|---|---|
| Lead and Copper Rulecorrosion control and lead sampling | 2 | 2019–2020 | 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 Troy Hills water hard?
Yes. It measures about 208 mg/L (12.2 grains per gallon), which the USGS classes as very hard.
What is the water hardness in Troy Hills in grains per gallon?
About 12.2 gpg. One grain per gallon equals 17.1 mg/L, so 208 mg/L divided by 17.1 gives 12.2.
What size water softener do I need in Troy Hills?
For 3 people using 75 gallons each per day, 12.2 gpg works out to about 2,736 grains a day. A 24,000-grain softener covers that with a regeneration about every 8 days.
Has the Troy Hills water system had EPA violations?
EPA records show 2 health-based violations for Parsippany-Troy Hills Water Department since 2016, involving Lead and Copper Rule. There were also 48 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Parsippany208 mg/LVery hard
- Whippany148 mg/LHard
- Lake Hiawatha208 mg/LVery hard
- Pine Brook180 mg/LHard
- Boonton92 mg/LModerately hard
- Morris Plains148 mg/LHard
- Florham Park137 mg/LHard
- Morristown148 mg/LHard
- Towaco180 mg/LHard
- Madison138 mg/LHard
Hardness data: TapWaterData US Water Hardness (utility report, May 19, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.