Covington, LA water hardness

Tap water hardness
4mg/L
0.2gpg
Soft

Reported by ST Tam Parish - Briarwood Terrace · May 2025

LA typical
102 mg/L
EPA health violations since 2016
0
Data
Utility report

The water in Covington carries roughly 4 mg/L of dissolved calcium and magnesium, or 0.2 grains per gallon. That is soft water. The number comes from ST Tam Parish - Briarwood Terrace, dated May 2025.

Covington on the hardness scale, with nearby cities
060120180240300360+LA typical 102Hammond: 27 mg/LHammond 27Slidell: 42 mg/LSlidell 42Mandeville: 48 mg/LMandeville 48Metairie: 135 mg/LMetairie 135New Orleans: 153 mg/LNew Orleans 153Gretna: 153 mg/LGretna 153Jefferson: 154 mg/LJefferson 154Elmwood: 154 mg/LElmwood 154Bridge City: 154 mg/LBridge City 154Westwego: 154 mg/LWestwego 154Covington 4mg/L as calcium carbonate060120180240300360+LA 102Hammond: 27 mg/LHammond 27Slidell: 42 mg/LSlidell 42Mandeville: 48 mg/LMandeville 48Metairie: 135 mg/LMetairie 135New Orleans: 153 mg/LNew Orleans 153Jefferson: 154 mg/LJefferson 1544 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Covington sits 98 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 27 mg/L in Hammond to 154 in Jefferson.

What 4 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 4 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 Covington's water system

ST Tam Parish - Briarwood Terrace · PWSID LA1103079

No health-based violations since 2016

Serves about 17,536 people from groundwater.

Health-based
0
Monitoring or reporting
0
Open now
0

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 Covington water hard?

No. It measures about 4 mg/L (0.2 grains per gallon), which the USGS classes as soft.

What is the water hardness in Covington in grains per gallon?

About 0.2 gpg. One grain per gallon equals 17.1 mg/L, so 4 mg/L divided by 17.1 gives 0.2.

Has the Covington water system had EPA violations?

EPA records show no health-based violations for ST Tam Parish - Briarwood Terrace since 2016.

Nearby cities

All 32 cities in Louisiana

Hardness data: TapWaterData US Water Hardness (utility report, May 15, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.