Port Allen, LA water hardness

Tap water hardness
19mg/L
1.1gpg
Soft

Reported by New Iberia Water System (Lawco) · September 2025

LA typical
102 mg/L
EPA health violations since 2016
1
Data
Utility report

The water in Port Allen carries roughly 19 mg/L of dissolved calcium and magnesium, or 1.1 grains per gallon. That is soft water. The number comes from New Iberia Water System (Lawco), dated September 2025.

Port Allen on the hardness scale, with nearby cities
060120180240300360+LA typical 102Baton Rouge: 23 mg/LBaton Rouge 23Hammond: 27 mg/LHammond 27Zachary: 55 mg/LZachary 55Prairieville: 66 mg/LPrairieville 66Carencro: 99 mg/LCarencro 99Scott: 99 mg/LScott 99Lafayette: 102 mg/LLafayette 102New Iberia: 136 mg/LNew Iberia 136Youngsville: 147 mg/LYoungsville 147Broussard: 159 mg/LBroussard 159Port Allen 19mg/L as calcium carbonate060120180240300360+LA 102Baton Rouge: 23 mg/LBaton Rouge 23Hammond: 27 mg/LHammond 27Zachary: 55 mg/LZachary 55Prairieville: 66 mg/LPrairievil. 66New Iberia: 136 mg/LNew Iberia 136Broussard: 159 mg/LBroussard 15919 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

At 19 mg/L, Port Allen is 83 mg/L below the typical Louisiana figure of 102. None of the 10 nearest cities we track has softer water. The range nearby runs from 23 mg/L in Baton Rouge to 159 in Broussard.

What 19 mg/L means at home

Soap and shampoo lather with very little product. Kettles and showerheads stay mostly free of white crust.

Some people notice that soap feels slow to rinse off in soft water. That slippery feel is normal and harmless.

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

Nothing, as far as hardness goes. At 19 mg/L a softener would have almost nothing to remove.

Carbon filter

If the water tastes of chlorine, a pitcher or faucet carbon filter takes care of that. It does not change hardness.

EPA record for Port Allen's water system

City of Port Allen Water System · PWSID LA1121014

1 health-based violation since 2016

Serves about 6,759 people from groundwater.

Health-based
1
Monitoring or reporting
4
Open now
1

EPA lists City of Port Allen Water System as the system serving Port Allen. The hardness figure above comes from a different system's report, which TapWaterData uses for Port Allen.

20162017201820192020202120222023202420252026Lead and Copper Rule'16'18'20'22'24'26Lead and Copper Rule
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Lead and Copper Rulecorrosion control and lead sampling12024Resolved

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 Port Allen water hard?

No. It measures about 19 mg/L (1.1 grains per gallon), which the USGS classes as soft.

What is the water hardness in Port Allen in grains per gallon?

About 1.1 gpg. One grain per gallon equals 17.1 mg/L, so 19 mg/L divided by 17.1 gives 1.1.

Has the Port Allen water system had EPA violations?

EPA records show 1 health-based violation for City of Port Allen Water System since 2016, involving Lead and Copper Rule. There were also 4 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 32 cities in Louisiana

Hardness data: TapWaterData US Water Hardness (utility report, September 2, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.