Hard water in Emmaus, PA
Reported by Lca Emmaus Consecutive Div · July 2025
- PA typical
- 127 mg/L
- EPA health violations since 2016
- 1
- Softener for 3 people
- 24k grain
- Data
- Utility report
Emmaus water measures 191 mg/L (11.2 gpg) of hardness, very hard by USGS standards. The number comes from Lca Emmaus Consecutive Div, dated July 2025.
Emmaus sits 64 mg/L above the typical Pennsylvania figure of 127. Of the 10 nearest cities we track, 5 have softer water and 5 have harder. The range nearby runs from 50 mg/L in Wilson to 289 in Perkasie.
What 191 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 191 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 × 11.2 gpg = 2,513 grains a day. A 24,000-grain unit regenerates about every 9 days.
EPA record for Emmaus's water system
1 health-based violation since 2016
Serves about 14,000 people from groundwater.
- Health-based
- 1
- Monitoring or reporting
- 87
- Open now
- 0
EPA lists Emmaus Borough Public Water as the system serving Emmaus. The hardness figure above comes from a different system's report, which TapWaterData uses for Emmaus.
| Contaminant or rule | Violations | Period | Status |
|---|---|---|---|
| Total Coliform Rulebacteria | 1 | 2024 | 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 Emmaus water hard?
Yes. It measures about 191 mg/L (11.2 grains per gallon), which the USGS classes as very hard.
What is the water hardness in Emmaus in grains per gallon?
About 11.2 gpg. One grain per gallon equals 17.1 mg/L, so 191 mg/L divided by 17.1 gives 11.2.
What size water softener do I need in Emmaus?
For 3 people using 75 gallons each per day, 11.2 gpg works out to about 2,513 grains a day. A 24,000-grain softener covers that with a regeneration about every 9 days.
Has the Emmaus water system had EPA violations?
EPA records show 1 health-based violation for Emmaus Borough Public Water since 2016, involving Total Coliform Rule. There were also 87 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Dorneyville192 mg/LVery hard
- Wescosville240 mg/LVery hard
- Ancient Oaks240 mg/LVery hard
- Fullerton158 mg/LHard
- Breinigsville240 mg/LVery hard
- Hellertown63 mg/LModerately hard
- Bethlehem63 mg/LModerately hard
- Northampton57 mg/LSoft
- Perkasie289 mg/LVery hard
- Wilson50 mg/LSoft
All 172 cities in Pennsylvania
Hardness data: TapWaterData US Water Hardness (utility report, July 16, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.