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WaterSafeCheck
Official EPA SDWIS Statewide AnalysisState Water Quality & Testing Directory

Louisiana Drinking Water Quality & Testing Directory

Comprehensive EPA compliance records, water testing guidelines, and city rankings covering all 723 ZIP codes across Louisiana

Quick Summary: Is Tap Water Safe in Louisiana?

Drinking water in Louisiana receives an average composite safety score of 71.5/100 based on EPA Safe Drinking Water Act records. Approximately 27% of monitored ZIP codes earn an "A" grade. Water sources are 34.9% surface water and 65.1% groundwater, resulting in Hard to Very Hard mineral hardness across the state.

Total ZIP Codes

723

Health Violations (5yr)

3,238

Statewide Avg Score

71.5/100

High Lead Risk Areas

30.6%

Overview: Drinking Water in Louisiana

Drinking water quality in Louisiana averages a composite safety score of 71.5/100 across its 723 monitored ZIP codes. Approximately 27% of ZIP codes in the state receive an "A" grade, while 4% receive an "F" grade. Environmental standards are enforced by Louisiana Department of Health.

Surface Water

34.9%

of ZIP codes

Total Violations

5,477

5-year record

Grade A ZIPs

196

27% of state

Grade F ZIPs

27

4% of state

Water Quality Grade Distribution in Louisiana

How do Louisiana's 723 ZIP codes stack up by water quality grade?

A
196 ZIP codes27%
B
213 ZIP codes29%
C
166 ZIP codes23%
D
121 ZIP codes17%
F
27 ZIP codes4%

Popular Cities in Louisiana

Click any city to view ZIP code-level water quality reports

New Orleans

62 ZIPs

B

Baton Rouge

42 ZIPs

A

Shreveport

35 ZIPs

C

Lafayette

14 ZIPs

A

Metairie

12 ZIPs

D

Lake Charles

11 ZIPs

A

Monroe

11 ZIPs

C

Alexandria

7 ZIPs

C

Kenner

5 ZIPs

D

Slidell

5 ZIPs

B

Bossier City

5 ZIPs

C

Houma

4 ZIPs

B

Hammond

4 ZIPs

A

Gretna

3 ZIPs

B

Covington

3 ZIPs

B

Mandeville

3 ZIPs

B

Thibodaux

3 ZIPs

A

New Iberia

3 ZIPs

C

Sulphur

3 ZIPs

B

Denham Springs

3 ZIPs

B

Ruston

3 ZIPs

A

West Monroe

3 ZIPs

B

Pineville

3 ZIPs

A

Natchitoches

3 ZIPs

A

Belle Chasse

2 ZIPs

C

Chalmette

2 ZIPs

B

Harvey

2 ZIPs

D

La Place

2 ZIPs

D

Marrero

2 ZIPs

D

Westwego

2 ZIPs

B

Morgan City

2 ZIPs

B

Bogalusa

2 ZIPs

B

Abbeville

2 ZIPs

B

Crowley

2 ZIPs

D

Opelousas

2 ZIPs

B

Baker

2 ZIPs

B

Gonzales

2 ZIPs

B

Plaquemine

2 ZIPs

C

Minden

2 ZIPs

A

Bastrop

2 ZIPs

B

City A-Z Directory — Louisiana

Browse water quality reports for every town and city in Louisiana.

A
AbbevilleAbita SpringsAcmeAddisAimwellAkersAlbanyAlexandriaAmaAmeliaAmiteAnacocoAngieAngolaArabiArcadiaArchibaldArnaudvilleAshlandAthensAtlantaAvery Island
B
BakerBaldwinBallBaratariaBarksdale AfbBasileBaskinBastropBatchelorBaton RougeBelcherBell CityBelle ChasseBelle RoseBelmontBentleyBentonBerniceBerwickBethanyBienvilleBlanchardBogalusaBonitaBoothvilleBordelonvilleBossier CityBourgBoutteBoyceBraithwaiteBranchBreaux BridgeBrittanyBroussardBruslyBunkieBurasBurnsideBush
C
CadeCalhounCalvinCameronCamptiCarencroCarvilleCastorCeciliaCenter PointCentervilleChalmetteCharentonChaseChataignierChathamChauvinCheneyvilleChoudrantChurch PointClarenceClarksClaytonClintonCloutiervilleColfaxCollinstonColumbiaConventConverseCotton ValleyCottonportCoushattaCovingtonCreoleCrowleyCrowvilleCullenCut Off
D
DarrowDelcambreDelhiDeltaDenham SpringsDequincyDeridderDes AllemandsDestrehanDevilleDodsonDonaldsonvilleDonnerDownsvilleDoylineDry CreekDry ProngDubachDubberlyDulacDuplessisDupontDuson
E
EchoEdgardEffieEganElizabethElm GroveElmerEltonEmpireEnterpriseEppsErathErosErwinvilleEstherwoodEthelEuniceEvangelineEvansEvergreen
F
FairbanksFarmervilleFentonFerridayFisherFlatwoodsFloraFlorienFlukerFolsomFordocheForestForest HillFort NecessityFort PolkFranklinFranklintonFrench SettlementFrierson
G
GallianoGarden CityGardnerGaryvilleGeismarGeorgetownGheensGibslandGibsonGilbertGilliamGlenmoraGlosterGlynnGolden MeadowGoldonnaGonzalesGorumGramblingGramercyGrand CaneGrand ChenierGrand CoteauGrand IsleGrantGrayGraysonGreensburgGreenwell SpringsGreenwoodGretnaGrosse TeteGueydan
H
HackberryHahnvilleHall SummitHamburgHammondHarrisonburgHarveyHaughtonHayesHaynesvilleHeflinHessmerHesterHinestonHodgeHoldenHomerHornbeckHosstonHoumaHusser
I
IdaIndependenceInnisIotaIowa
J
JacksonJamestownJarreauJeaneretteJenaJenningsJiggerJonesJonesboroJonesvilleJoyce
K
KaplanKeatchieKeithvilleKellyKennerKentwoodKilbourneKinderKraemerKrotz SpringsKurthwood
L
La PlaceLabadievilleLacassineLacombeLafayetteLafitteLake ArthurLake CharlesLake ProvidenceLakelandLaroseLawtellLebeauLeblancLecompteLeesvilleLenaLeonvilleLettsworthLibuseLillieLisbonLivingstonLivoniaLockportLogansportLongleafLongstreetLongvilleLorangerLoreauvilleLottieLulingLutcherLydia
M
MadisonvilleMamouMandevilleManghamMansfieldMansuraManyMaringouinMarionMarksvilleMarreroMarthavilleMathewsMaurepasMauriceMelroseMelvilleMer RougeMerauxMermentauMerryvilleMetairieMiltonMindenMittieMonroeMontegutMontereyMontgomeryMooringsportMoraMoreauvilleMorgan CityMorganzaMorrowMorseMount AiryMount Hermon
N
NapoleonvilleNatalbanyNatchezNatchitochesNegreetNew IberiaNew LlanoNew OrleansNew RoadsNew SarpyNewelltonNobleNorcoNorwood
O
Oak GroveOak RidgeOakdaleOberlinOil CityOllaOpelousasOscarOtis
P
PaincourtvillePalmettoParadisPattersonPaulinaPearl RiverPelicanPerryPierre PartPilottownPine GrovePine PrairiePinevillePioneerPitkinPlain DealingPlaqueminePlattenvillePlauchevillePleasant HillPointe A La HachePollockPonchatoulaPort AllenPort BarrePort SulphurPowhatanPrairievillePridePrincetonProvencal
Q
Quitman
R
RacelandRagleyRayneRayvilleReddellReevesReserveRhinehartRinggoldRoanokeRobelineRobertRodessaRosedaleRoselandRosepineRougonRubyRuston
S
Saint AmantSaint BenedictSaint BernardSaint FrancisvilleSaint GabrielSaint JamesSaint JosephSaint LandrySaint MartinvilleSaint MauriceSaint RoseSalineSareptaSchrieverScottShongalooShreveportSibleySicily IslandSieperSikesSimmesportSimpsonSimsboroSingerSlagleSlaughterSlidellSondheimerSorrentoSpearsvilleSpringfieldSpringhillStarksStartSterlingtonStonewallSugartownSulphurSummerfieldSunSunsetSunshineSwartz
T
TalisheekTallulahTangipahoaTaylorTheriotThibodauxTickfawTiogaTransylvaniaTroutTullosTunicaTurkey Creek
U
Uncle SamUrania
V
VacherieVarnadoVeniceVentressVidaliaVille PlatteVintonVioletVivian
W
WakefieldWalkerWashingtonWaterproofWatsonWelshWest MonroeWestlakeWestwegoWeyanokeWhite CastleWildsvilleWilsonWinnfieldWinnsboroWisnerWoodworth
Y
Youngsville
Z
ZacharyZwolle

🏆 Highest Rated ZIP Codes in Louisiana

70310Thibodaux
99/100
A
70595Lafayette
99/100
A
70596Lafayette
99/100
A
70598Lafayette
99/100
A
70609Lake Charles
99/100
A

⚠ Lowest Rated ZIP Codes in Louisiana

70001Metairie
37/100
F
70002Metairie
37/100
F
70003Metairie
37/100
F
70005Metairie
37/100
F
70006Metairie
37/100
F

Common Drinking Water Contaminants in Louisiana

The following are common regulated contaminants found in Louisiana drinking water based on EPA violation records. Click any contaminant to learn about EPA safety limits and health effects.

Contaminant 0700Stage 2 DBP RuleHaloacetic Acids (HAA5)Fecal ColiformConsumer Confidence Report RuleTotal Trihalomethanes (TTHM)ChloriteE. coli

Source: EPA Safe Drinking Water Act Maximum Contaminant Level regulations. For the complete list of regulated contaminants and MCLs, see the Water Quality Safety Guide.

Frequently Asked Questions — Louisiana Drinking Water

Is tap water generally safe to drink in Louisiana?+
Yes, for the majority of residents, tap water in Louisiana is treated and regulated. However, compliance varies by city. State-wide, 196 ZIP codes receive an "A" grade, while 27 receive an "F". Search your specific ZIP code to see your local utility's record.
How do I test water quality or well water in Louisiana?+
Residents in Louisiana can test their tap or well water by contacting laboratories certified by Louisiana Department of Health or ordering an EPA-standard laboratory water testing kit. Annual testing is recommended for private wells to test for bacteria, nitrates, and heavy metals.
What are the biggest water quality issues in Louisiana?+
The primary issues include managing 3,238 health-based violations state-wide and resolving infrastructure age. 30.6% of ZIP codes in the state have a high probability of lead exposure risk due to pre-1986 piping.
Who regulates and enforces drinking water standards in Louisiana?+
Drinking water in Louisiana is regulated by Louisiana Department of Health under a primacy agreement with the U.S. EPA.
Where does Louisiana get its drinking water?+
Approximately 34.9% of monitored areas in Louisiana rely on surface water sources (lakes/rivers), while the rest use groundwater aquifers.
How do I find the official water quality report for my home in Louisiana?+
Search your ZIP code on our site to view data compiled from EPA records, or contact your local utility for their annual Consumer Confidence Report (CCR).
View All 723 ZIP Codes in Louisiana

Browse EPA water quality data for every monitored ZIP code. For faster results, use the search bar above.

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All 723 ZIP codes in Louisiana are actively monitored under the EPA Safe Drinking Water Act.