STATE REPORT LA 1530 HEALTH VIOLATIONS

Louisiana Home Safety Profiles by ZIP

723 ZIP codes · 427 water systems · State-specific plumbing code · Updated

Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData, NWS, State plumbing boards, Rewiring America

ZipCheckup tracks drinking-water and home-safety data for 723 ZIP codes across Louisiana, covering 427 public water systems that serve about 3,965,854 people. 323 ZIP codes carry at least one EPA violation on record.

723
ZIP Codes
427
Water Systems
323
ZIPs with Violations
State-specific
Plumbing Code
A · 92
Avg Safety Score
#2
of 50 States
99%
ZIPs Rated A or B
79%
ZIPs with Violations
A
Louisiana average: 92/100 - ranked #2 of 50 states. 19 points above the national average (73). 99% of ZIP codes scored A or B.

Residents across Louisiana generally have access to tap water that meets federal safety benchmarks.

Score Distribution

How Louisiana's 723 ZIP codes are distributed across safety grades.

148
A
52
B
2
C
0
D
0
F
85-10070-8455-6940-540-39

Home Safety Scores by State

Loading map…
F (0-39) D (40-54) C (55-69) B (70-84) A (85+)

Model 4.0.0 inputs: EPA SDWIS, UCMR5 PFAS, EPA radon zones, annual county AQI •

Top 10 Safest ZIP Codes in Louisiana

Highest Home Safety Scores in the state.

#ZIP CodeCityCountyScoreGrade
1 70001 MetairieJefferson 100 A
2 70002 MetairieJefferson 100 A
3 70003 MetairieJefferson 100 A
4 70005 MetairieJefferson 100 A
5 70006 MetairieJefferson 100 A
6 70030 Des AllemandsTerrebonne 100 A
7 70032 ArabiSt. Bernard 100 A
8 70043 ChalmetteSt. Bernard 100 A
9 70062 KennerJefferson 100 A
10 70065 KennerJefferson 100 A

10 Lowest-Scoring ZIP Codes in Louisiana

#ZIP CodeCityCountyScoreGradeViolations
1 70764 PlaquemineIberville 67 C 27
2 70582 Saint MartinvilleSt. Martin 67 C 37
3 70131 New OrleansOrleans 77 B 11
4 70129 New OrleansOrleans 77 B 11
5 70128 New OrleansOrleans 77 B 11
6 70127 New OrleansOrleans 77 B 11
7 70126 New OrleansOrleans 77 B 11
8 70117 New OrleansOrleans 77 B 11
9 70114 New OrleansOrleans 77 B 12
10 70148 New OrleansOrleans 82 B 4

County Rankings

Water quality breakdown by county. 64 counties with data in Louisiana.

Loading county map…
F (0-39) D (40-54) C (55-69) B (70-84) A (85+)

County-level aggregation of measured ZIP Home Safety Scores • EPA SDWIS, UCMR 5 PFAS, EPA radon zones, EPA AirData

CountyAvg ScoreGradeZIPsBest ZIPWorst ZIP
22001 N/A N/A 11 N/A N/A
22003 N/A N/A 9 N/A N/A
22005 92 A 11 70725 (100) 70769 (83)
22007 N/A N/A 7 N/A N/A
22009 N/A N/A 13 N/A N/A
22011 N/A N/A 7 N/A N/A
22013 N/A N/A 7 N/A N/A
22015 87 A 25 71110 (99) 71111 (83)
22017 86 A 31 71101 (88) 71129 (83)
22019 88 A 20 70601 (100) 70669 (83)
22021 N/A N/A 5 N/A N/A
22023 N/A N/A 5 N/A N/A
22025 N/A N/A 7 N/A N/A
22027 N/A N/A 5 N/A N/A
22029 N/A N/A 6 N/A N/A
22031 N/A N/A 9 N/A N/A
22033 91 A 48 70770 (92) 70791 (88)
22035 N/A N/A 3 N/A N/A
22037 N/A N/A 5 N/A N/A
22039 N/A N/A 7 N/A N/A
22041 N/A N/A 9 N/A N/A
22043 N/A N/A 7 N/A N/A
22045 N/A N/A 8 N/A N/A
22047 91 A 8 70721 (100) 70764 (67)
22049 N/A N/A 5 N/A N/A
22051 98 A 35 70001 (100) 70072 (93)
22053 N/A N/A 7 N/A N/A
22055 92 A 19 70501 (100) 70583 (83)
22057 99 A 12 70355 (100) 70301 (95)
22059 N/A N/A 3 N/A N/A
22061 N/A N/A 8 N/A N/A
22063 92 A 11 70706 (99) 70744 (83)
22065 N/A N/A 3 N/A N/A
22067 N/A N/A 8 N/A N/A
22069 N/A N/A 15 N/A N/A
22071 80 B 58 70112 (82) 70131 (77)
22073 89 A 16 71201 (95) 71292 (83)
22075 N/A N/A 11 N/A N/A
22077 93 A 16 70752 (100) 70757 (87)
22079 96 A 29 71301 (100) 71405 (83)
22081 N/A N/A 2 N/A N/A
22083 N/A N/A 4 N/A N/A
22085 N/A N/A 9 N/A N/A
22087 100 A 6 70032 (100) 70092 (100)
22089 N/A N/A 9 N/A N/A
22091 N/A N/A 2 N/A N/A
22093 98 A 8 70052 (99) 70090 (95)
22095 99 A 6 70068 (100) 70049 (98)
22097 N/A N/A 14 N/A N/A
22099 75 B 4 70517 (83) 70582 (67)
22101 N/A N/A 11 N/A N/A
22103 90 A 19 70420 (97) 70458 (83)
22105 91 A 17 70455 (100) 70456 (83)
22107 N/A N/A 4 N/A N/A
22109 100 A 13 70030 (100) 70397 (100)
22111 N/A N/A 7 N/A N/A
22113 N/A N/A 8 N/A N/A
22115 N/A N/A 13 N/A N/A
22117 N/A N/A 5 N/A N/A
22119 N/A N/A 11 N/A N/A
22121 88 A 4 70719 (91) 70767 (85)
22123 N/A N/A 5 N/A N/A
22125 N/A N/A 5 N/A N/A
22127 N/A N/A 8 N/A N/A

Most Common Contaminants in Louisiana

Contaminant / RuleCategoryZIPs AffectedViolationsHealth Risk
Stage 1 DBP Rule Treatment Technique 179 439 Yes
Contaminant 0700 Other 176 1421 Yes
Surface Water Treatment Rule Treatment Technique 164 388 No
Lead and Copper Rule Treatment Technique 148 489 No
Stage 2 DBP Rule Treatment Technique 141 312 Yes
Haloacetic Acids (HAA5) Disinfection Byproducts 107 1051 Yes
Fecal Coliform Microbiological 64 376 Yes
Total Trihalomethanes (TTHM) Disinfection Byproducts 49 307 Yes

Overview

We track multi-source home safety signals for 723 ZIP records across Louisiana. Home Safety Score model 4.0.0 is published for 202 scored records; missing required evidence suppresses the score.

The EPA snapshots used for this build directly map water systems to 410 ZIP records, covering 427 community water systems that serve approximately 3,965,854 people.

323 of 410 ZIP codes with a reported violation count in the available EPA record (79%) have recorded EPA violations. 1530 health-based violations appear in the available health breakdown.

Plumbing Regulations

Louisiana follows the Louisiana State Plumbing Code (NSPC-based) (Current edition).

  • Plumbing code: State-specific (Current)
  • Homeowner DIY: Licensed plumber required
  • Water heater permit: Required
  • Annual backflow test: Required

Full Louisiana regulations →

Areas with Most Violations

ZIP Code City Home Safety Grade Violations Health-Based System
71334 Ferriday — 143 96 Town of Ferriday Water System
71449 Many — 116 82 Town of Many Water System
71373 Vidalia — 112 66 Town of Vidalia Water System
71462 Noble — 97 80 Town of Zwolle Water System
71486 Zwolle — 97 80 Town of Zwolle Water System
71019 Coushatta — 85 63 Town of Coushatta Water System
71222 Bernice — 79 54 Town of Bernice Water System
70586 Ville Platte — 74 45 City of Ville Platte Water System
71031 Goldonna — 66 52 Chestnut-readhimer Water System
71229 Collinston — 61 38 Village of Collinston Water System

Areas with No Violations

ZIP Code City Home Safety Grade System Population
70001 Metairie A E Jefferson Ww District 1 275,163
70002 Metairie A E Jefferson Ww District 1 275,163
70003 Metairie A E Jefferson Ww District 1 275,163
70005 Metairie A E Jefferson Ww District 1 275,163
70006 Metairie A E Jefferson Ww District 1 275,163
70030 Des Allemands A St Charles Parish Department of Waterworks 52,879
70031 Ama — St Charles Parish Department of Waterworks 52,879
70032 Arabi A St Bernard Parish Waterworks 44,783
70039 Boutte — St Charles Parish Department of Waterworks 52,879
70040 Braithwaite — St Bernard Parish Waterworks 44,783

Home Safety Score

Average Home Safety Score for Louisiana: A (92/100) across 202 scored of 723 tracked ZIP records.

Model 4.0.0 uses the canonical components water-compliance, pfas-mcl-screen, radon-zone, annual-aqi across 3 required domains. The sections below provide additional context and do not change that score. Missing required evidence suppresses the score, and a favorable result is not a property-level safety certification.

Lead & Copper

  • Average lead level (90th percentile): 0.0025 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 410 ZIP codes with known status exceed the EPA lead action level

Radon Risk

  • High risk (Zone 1): 0 ZIP codes (0%)
  • Moderate risk (Zone 2): 0 ZIP codes
  • Low risk (Zone 3): 529 ZIP codes

ZIP Code Reports for Louisiana

Largest Communities

ZIP Code City Population Safety Grade Violations
70726 Denham Springs 733,552 A 7
70785 Walker 730,019 A 5
70706 Denham Springs 709,662 A 3
70739 Greenwell Springs 700,716 A 1
70770 Pride 674,991 A 0
70818 Baton Rouge 674,991 A 0
70814 Baton Rouge 622,569 A 1
70816 Baton Rouge 622,569 A 1
70817 Baton Rouge 622,569 A 1
70819 Baton Rouge 622,569 A 1
70737 Gonzales 615,983 B 51
70734 Geismar 615,141 A 4
70769 Prairieville 614,073 B 22
70791 Zachary 612,919 A 8
70722 Clinton 611,673 — 0
70714 Baker 610,699 A 1
70807 Baton Rouge 610,699 A 1
70811 Baton Rouge 610,699 A 1
70118 New Orleans 610,066 B 4
70124 New Orleans 610,066 B 4

Lowest Published Home Safety Scores

ZIP Code City Score Grade Violations
70582 Saint Martinville 67 C 37
70764 Plaquemine 67 C 27
70114 New Orleans 77 B 12
70117 New Orleans 77 B 11
70126 New Orleans 77 B 11

Highest Published Home Safety Scores

ZIP Code City Score Grade Violations
70001 Metairie 100 A 0
70002 Metairie 100 A 0
70003 Metairie 100 A 0
70005 Metairie 100 A 0
70006 Metairie 100 A 0

All 723 ZIP Codes in Louisiana

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Largest water systems in Louisiana

The 12 biggest community water systems serving Louisiana, of 427 total.

Show all 12 water systems

Systems with the most violations in Louisiana

12 systems in Louisiana with the most recorded EPA violations.

Frequently Asked Questions

Is the water safe to drink in Louisiana?

Louisiana has 427 community water systems serving 3,965,854 people across 723 ZIP codes. There are 2,308 recorded violations, including 1530 health-based. 323 of 723 ZIP codes have at least one violation.

What plumbing code does Louisiana follow?

Louisiana follows the State-specific plumbing code. A licensed plumber is generally required for plumbing work.

How to cite this page

APA ZipCheckup. (2026). Louisiana Home Safety Profiles by ZIP. https://zipcheckup.com/states/louisiana/
BibTeX 
@misc{zipcheckup-states-louisiana,
  author = {{ZipCheckup}},
  title  = {{Louisiana Home Safety Profiles by ZIP}},
  year   = {2026},
  url    = {https://zipcheckup.com/states/louisiana/}
}

Page version: August 2026.

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