Louisiana — 1st District
119th Congress · 37 ZIP codes · Avg score 59/100 · Grade C · Updated 2026-06-03
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-06-03
Top Contaminants
ZIP Codes in This District
37 ZIP codes tracked in Louisiana's 1st District.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 70310 | Thibodaux | 88 | A | 0 |
| 2 | 70302 | Thibodaux | 87 | A | 0 |
| 3 | 70463 | Sun | 86 | A | 2 (1 health) |
| 4 | 70434 | Covington | 78 | B | 4 (1 health) |
| 5 | 70469 | Slidell | 76 | B | 8 (4 health) |
| 6 | 70446 | Loranger | 73 | B | 11 (3 health) |
| 7 | 70374 | Lockport | 72 | B | 0 |
| 8 | 70420 | Abita Springs | 72 | B | 0 |
| 9 | 70452 | Pearl River | 72 | B | 1 |
| 10 | 70437 | Folsom | 71 | B | 1 (1 health) |
| 11 | 70435 | Covington | 68 | C | 4 (1 health) |
| 12 | 70301 | Thibodaux | 67 | C | 0 |
| 13 | 70459 | Slidell | 67 | C | 8 (4 health) |
| 14 | 70774 | Saint Amant | 66 | C | 9 (1 health) |
| 15 | 70433 | Covington | 63 | C | 4 (1 health) |
| 16 | 70371 | Kraemer | 60 | C | 0 |
| 17 | 70375 | Mathews | 60 | C | 0 |
| 18 | 70442 | Husser | 60 | C | 0 |
| 19 | 70447 | Madisonville | 60 | C | 5 |
| 20 | 70445 | Lacombe | 59 | C | 1 |
| 21 | 70458 | Slidell | 57 | C | 8 (4 health) |
| 22 | 70460 | Slidell | 57 | C | 8 (4 health) |
| 23 | 70461 | Slidell | 57 | C | 8 (4 health) |
| 24 | 70093 | Belle Chasse | 55 | C | 102 (96 health) |
| 25 | 70355 | Gheens | 52 | D | 0 |
| 26 | 70464 | Talisheek | 52 | D | 0 |
| 27 | 70457 | Saint Benedict | 50 | D | 0 |
| 28 | 70395 | Schriever | 47 | D | 0 |
| 29 | 70431 | Bush | 47 | D | 0 |
| 30 | 70037 | Belle Chasse | 42 | D | 102 (96 health) |
| 31 | 70040 | Braithwaite | 42 | D | 0 |
| 32 | 70354 | Galliano | 42 | D | 0 |
| 33 | 70373 | Larose | 42 | D | 0 |
| 34 | 70455 | Robert | 42 | D | 0 |
| 35 | 70085 | Saint Bernard | 37 | F | 0 |
| 36 | 70345 | Cut Off | 37 | F | 0 |
| 37 | 70357 | Golden Meadow | 37 | F | 0 |
Overview
Louisiana's 1st District serving an estimated 1,310,231 residents encompasses 37 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (59/100).
286 EPA violations have been recorded across this district's water systems. 221 are health-based violations. About 46% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Haloacetic Acids (HAA5) — 150 violations
- Total Trihalomethanes (TTHM) — 42 violations
- Surface Water Treatment Rule — 26 violations
- Stage 1 DBP Rule — 21 violations
- Consumer Confidence Report Rule — 20 violations
Housing Context
Homes in this district were built on average around 1990 (~36 years old). Most homes were built after lead pipe regulations were tightened.
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 37 ZIP codes in Louisiana's 1st District.