Hard water in Sulphur, LA
Reported by Sulphur City of Water System · February 2024
- LA typical
- 102 mg/L
- EPA health violations since 2016
- 1
- Softener for 3 people
- 24k grain
- Data
- Utility report
The water in Sulphur carries roughly 211 mg/L of dissolved calcium and magnesium, or 12.3 grains per gallon. That is very hard water. The number comes from Sulphur City of Water System, dated February 2024.
Sulphur sits 109 mg/L above the typical Louisiana figure of 102. None of the 10 nearest cities we track has harder water. The range nearby runs from 19 mg/L in Port Allen to 211 in Carlyss.
What 211 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 211 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 × 12.3 gpg = 2,776 grains a day. A 24,000-grain unit regenerates about every 8 days.
EPA record for Sulphur's water system
1 health-based violation since 2016
Serves about 24,489 people from groundwater.
- Health-based
- 1
- Monitoring or reporting
- 1
- Open now
- 0
| Contaminant or rule | Violations | Period | Status |
|---|---|---|---|
| Groundwater Ruletreatment of well water | 1 | 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 Sulphur water hard?
Yes. It measures about 211 mg/L (12.3 grains per gallon), which the USGS classes as very hard.
What is the water hardness in Sulphur in grains per gallon?
About 12.3 gpg. One grain per gallon equals 17.1 mg/L, so 211 mg/L divided by 17.1 gives 12.3.
What size water softener do I need in Sulphur?
For 3 people using 75 gallons each per day, 12.3 gpg works out to about 2,776 grains a day. A 24,000-grain softener covers that with a regeneration about every 8 days.
Has the Sulphur water system had EPA violations?
EPA records show 1 health-based violation for City of Sulphur Water System since 2016, involving Groundwater Rule. There were also 1 monitoring or reporting violation, which are about late or missing tests and notices.
Nearby cities
- Carlyss211 mg/LVery hard
- Lake Charles120 mg/LHard
- Scott99 mg/LModerately hard
- Carencro99 mg/LModerately hard
- Lafayette102 mg/LModerately hard
- Youngsville147 mg/LHard
- Broussard159 mg/LHard
- Alexandria26 mg/LSoft
- New Iberia136 mg/LHard
- Port Allen19 mg/LSoft
Hardness data: TapWaterData US Water Hardness (utility report, February 10, 2024), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.