Louisiana — 4th District
119th Congress · 188 ZIP codes · Avg score 76/100 · Grade B · Updated 2026-07-17
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-07-17
ZipCheckup tracks water safety for 188 ZIP codes in Louisiana's 4th District: the district earns a grade B (76/100). 2,392 EPA violations on record, 1,601 health-based.
Top Contaminants
ZIP Codes in This District
100 ZIP codes tracked in Louisiana's 4th District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 70609 | Lake Charles | 99 | A | 0 |
| 2 | 71003 | Athens | 99 | A | 1 |
| 3 | 71034 | Hall Summit | 99 | A | 0 |
| 4 | 71043 | Hosston | 99 | A | 0 |
| 5 | 71044 | Ida | 99 | A | 1 |
| 6 | 71072 | Shongaloo | 99 | A | 0 |
| 7 | 71079 | Summerfield | 99 | A | 0 |
| 8 | 71110 | Barksdale Afb | 99 | A | 1 |
| 9 | 71256 | Lillie | 99 | A | 0 |
| 10 | 71272 | Ruston | 99 | A | 0 |
| 11 | 71439 | Hornbeck | 99 | A | 0 |
| 12 | 71474 | Simpson | 98 | A | 1 (1 health) |
| 13 | 71058 | Minden | 97 | A | 4 (2 health) |
| 14 | 71018 | Cotton Valley | 96 | A | 4 |
| 15 | 70585 | Turkey Creek | 95 | A | 0 |
| 16 | 70606 | Lake Charles | 95 | A | 0 |
| 17 | 70612 | Lake Charles | 95 | A | 0 |
| 18 | 70616 | Lake Charles | 95 | A | 0 |
| 19 | 70629 | Lake Charles | 95 | A | 0 |
| 20 | 70638 | Elizabeth | 95 | A | 0 |
| 21 | 70644 | Grant | 95 | A | 1 |
| 22 | 70652 | Longville | 95 | A | 0 |
| 23 | 70656 | Pitkin | 95 | A | 0 |
| 24 | 70658 | Reeves | 95 | A | 0 |
| 25 | 70660 | Singer | 95 | A | 0 |
| 26 | 71024 | Dubberly | 95 | A | 1 |
| 27 | 71273 | Ruston | 95 | A | 0 |
| 28 | 71426 | Fisher | 95 | A | 0 |
| 29 | 71430 | Forest Hill | 95 | A | 0 |
| 30 | 71438 | Hineston | 95 | A | 0 |
| 31 | 71475 | Slagle | 95 | A | 0 |
| 32 | 70664 | Sulphur | 94 | A | 1 (1 health) |
| 33 | 71048 | Lisbon | 94 | A | 1 (1 health) |
| 34 | 71424 | Elmer | 94 | A | 1 (1 health) |
| 35 | 71461 | New Llano | 94 | A | 3 (1 health) |
| 36 | 71275 | Simsboro | 93 | A | 3 (2 health) |
| 37 | 71038 | Haynesville | 92 | A | 4 (3 health) |
| 38 | 70659 | Rosepine | 91 | A | 1 (1 health) |
| 39 | 70602 | Lake Charles | 90 | A | 0 |
| 40 | 70633 | Dequincy | 90 | A | 0 |
| 41 | 71009 | Blanchard | 90 | A | 3 (2 health) |
| 42 | 71069 | Rodessa | 90 | A | 7 (2 health) |
| 43 | 71226 | Chatham | 90 | A | 6 (5 health) |
| 44 | 71270 | Ruston | 90 | A | 0 |
| 45 | 71477 | Tioga | 90 | A | 1 |
| 46 | 71496 | Leesville | 90 | A | 5 (2 health) |
| 47 | 70661 | Starks | 89 | A | 2 |
| 48 | 71006 | Benton | 89 | A | 3 (1 health) |
| 49 | 71078 | Stonewall | 89 | A | 2 |
| 50 | 71225 | Calhoun | 89 | A | 5 (3 health) |
Overview
Louisiana's 4th District encompasses 188 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is B (76/100).
2392 EPA violations have been recorded across this district's water systems. 1601 are health-based violations. About 70% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Haloacetic Acids (HAA5) - 710 violations
- Lead and Copper Rule - 287 violations
- Fecal Coliform - 237 violations
- Surface Water Treatment Rule - 209 violations
- Stage 2 DBP Rule - 203 violations
Housing Context
Homes in this district were built on average around 1983 (~43 years old). Older homes may have lead pipes or solder - consider a water filter if your home predates 1986.
Data Sources
- Water quality violations: EPA Safe Drinking Water Information System (SDWIS)
- Congressional district boundaries: U.S. Census Bureau, 119th Congress
- Housing age: U.S. Census Bureau American Community Survey
Updated daily. Data covers 188 ZIP codes in Louisiana's 4th District.