Hard water in Youngsville, LA
Reported by City of Youngsville Water System · August 2025
- LA typical
- 102 mg/L
- EPA health violations since 2016
- 4
- Softener for 3 people
- 24k grain
- Data
- Utility report
The water in Youngsville carries roughly 147 mg/L of dissolved calcium and magnesium, or 8.6 grains per gallon. That is hard water. The number comes from City of Youngsville Water System, dated August 2025.
At 147 mg/L, Youngsville is 45 mg/L above the typical Louisiana figure of 102. Of the 10 nearest cities we track, 9 have softer water and 1 has harder. The range nearby runs from 19 mg/L in Port Allen to 159 in Broussard.
What 147 mg/L means at home
Expect white crust on faucets and showerheads, plus spots on dishes that come out of the dishwasher.
Kettles collect scale quickly. Water heaters build up sediment at the bottom of the tank, which makes them work harder over time.
Soap and detergent need a little more to lather, and soap scum shows up in the tub.
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 147 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 × 8.6 gpg = 1,935 grains a day. A 24,000-grain unit regenerates about every 12 days.
EPA record for Youngsville's water system
4 health-based violations since 2016
Serves about 7,956 people from groundwater.
- Health-based
- 4
- Monitoring or reporting
- 4
- Open now
- 0
| Contaminant or rule | Violations | Period | Status |
|---|---|---|---|
| Groundwater Ruletreatment of well water | 4 | 2022 | 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 Youngsville water hard?
Yes. It measures about 147 mg/L (8.6 grains per gallon), which the USGS classes as hard.
What is the water hardness in Youngsville in grains per gallon?
About 8.6 gpg. One grain per gallon equals 17.1 mg/L, so 147 mg/L divided by 17.1 gives 8.6.
What size water softener do I need in Youngsville?
For 3 people using 75 gallons each per day, 8.6 gpg works out to about 1,935 grains a day. A 24,000-grain softener covers that with a regeneration about every 12 days.
Has the Youngsville water system had EPA violations?
EPA records show 4 health-based violations for City of Youngsville Water System since 2016, involving Groundwater Rule. There were also 4 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Broussard159 mg/LHard
- Lafayette102 mg/LModerately hard
- Scott99 mg/LModerately hard
- New Iberia136 mg/LHard
- Carencro99 mg/LModerately hard
- Port Allen19 mg/LSoft
- Baton Rouge23 mg/LSoft
- Zachary55 mg/LSoft
- Prairieville66 mg/LModerately hard
- Lake Charles120 mg/LHard
Hardness data: TapWaterData US Water Hardness (utility report, August 25, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.