Zachary, LA water hardness

Tap water hardness
55mg/L
3.2gpg
SoftCounty estimate

County estimate from 438 water samples in East Baton Rouge Parish · July 2026

LA typical
102 mg/L
EPA health violations since 2016
0
Data
County estimate

Water samples from around Zachary put hardness at about 55 mg/L (3.2 gpg), which would be soft on the USGS scale. Treat this as a rough guide: it is the median of 438 samples taken across East Baton Rouge Parish, mostly wells and streams, not a test of Zachary's treated tap water.

Zachary on the hardness scale, with nearby cities
060120180240300360+LA typical 102Port Allen: 19 mg/LPort Allen 19Baton Rouge: 23 mg/LBaton Rouge 23Hammond: 27 mg/LHammond 27Prairieville: 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 159Zachary 55mg/L as calcium carbonate060120180240300360+LA 102Port Allen: 19 mg/LPort Allen 19Baton Rouge: 23 mg/LBaton Rouge 23Hammond: 27 mg/LHammond 27Prairieville: 66 mg/LPrairievil. 66Carencro: 99 mg/LCarencro 99Broussard: 159 mg/LBroussard 15955 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Zachary sits 47 mg/L below the typical Louisiana figure of 102. Of the 10 nearest cities we track, 3 have softer water and 7 have harder. The range nearby runs from 19 mg/L in Port Allen to 159 in Broussard.

What 55 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 55 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 Zachary's water system

City of Zachary Water System · PWSID LA1033030

No health-based violations since 2016

Serves about 31,569 people from groundwater.

Health-based
0
Monitoring or reporting
0
Open now
0

EPA lists this system as serving Zachary.

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 Zachary water hard?

No. It measures about 55 mg/L (3.2 grains per gallon), which the USGS classes as soft.

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

About 3.2 gpg. One grain per gallon equals 17.1 mg/L, so 55 mg/L divided by 17.1 gives 3.2.

Has the Zachary water system had EPA violations?

EPA records show no health-based violations for City of Zachary Water System since 2016.

Nearby cities

All 32 cities in Louisiana

Hardness data: TapWaterData US Water Hardness (county estimate, July 4, 2026), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.