Nevada — 4th District
119th Congress · 146 ZIP codes · Avg score 74/100 · Grade B · Updated 2026-06-03
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-06-03
Top Contaminants
ZIP Codes in This District
100 ZIP codes tracked in Nevada's 4th District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 89019 | Jean | 99 | A | 0 |
| 2 | 89026 | Jean | 99 | A | 0 |
| 3 | 89028 | Laughlin | 99 | A | 0 |
| 4 | 89031 | North Las Vegas | 99 | A | 0 |
| 5 | 89032 | North Las Vegas | 99 | A | 0 |
| 6 | 89033 | North Las Vegas | 99 | A | 0 |
| 7 | 89036 | North Las Vegas | 99 | A | 0 |
| 8 | 89046 | Searchlight | 99 | A | 0 |
| 9 | 89085 | North Las Vegas | 99 | A | 0 |
| 10 | 89086 | North Las Vegas | 99 | A | 0 |
| 11 | 89087 | North Las Vegas | 99 | A | 0 |
| 12 | 89009 | Henderson | 97 | A | 2 |
| 13 | 89016 | Henderson | 97 | A | 2 |
| 14 | 89044 | Henderson | 97 | A | 2 |
| 15 | 89053 | Henderson | 97 | A | 2 |
| 16 | 89077 | Henderson | 97 | A | 2 |
| 17 | 89004 | Blue Diamond | 95 | A | 0 |
| 18 | 89029 | Laughlin | 95 | A | 0 |
| 19 | 89030 | North Las Vegas | 95 | A | 0 |
| 20 | 89081 | North Las Vegas | 95 | A | 0 |
| 21 | 89084 | North Las Vegas | 95 | A | 0 |
| 22 | 89018 | Indian Springs | 94 | A | 4 |
| 23 | 89070 | Indian Springs | 94 | A | 4 |
| 24 | 89002 | Henderson | 93 | A | 2 |
| 25 | 89011 | Henderson | 93 | A | 2 |
| 26 | 89012 | Henderson | 93 | A | 2 |
| 27 | 89025 | Moapa | 93 | A | 1 |
| 28 | 89052 | Henderson | 93 | A | 2 |
| 29 | 89074 | Henderson | 93 | A | 2 |
| 30 | 89024 | Mesquite | 89 | A | 5 |
| 31 | 89034 | Mesquite | 89 | A | 5 |
| 32 | 89191 | Nellis Afb | 89 | A | 1 (1 health) |
| 33 | 89014 | Henderson | 88 | A | 2 |
| 34 | 89015 | Henderson | 88 | A | 2 |
| 35 | 89006 | Boulder City | 85 | A | 14 |
| 36 | 89027 | Mesquite | 85 | A | 5 |
| 37 | 89022 | Manhattan | 83 | B | 0 |
| 38 | 89040 | Overton | 83 | B | 1 |
| 39 | 89003 | Beatty | 82 | B | 2 |
| 40 | 89005 | Boulder City | 81 | B | 14 |
| 41 | 89013 | Goldfield | 79 | B | 7 (1 health) |
| 42 | 89041 | Pahrump | 79 | B | 3 |
| 43 | 89061 | Pahrump | 79 | B | 3 |
| 44 | 89045 | Round Mountain | 78 | B | 10 (1 health) |
| 45 | 89060 | Pahrump | 74 | B | 3 |
| 46 | 89007 | Bunkerville | 73 | B | 0 |
| 47 | 89021 | Logandale | 73 | B | 0 |
| 48 | 89049 | Tonopah | 73 | B | 8 |
| 49 | 89054 | Sloan | 72 | B | 9 (7 health) |
| 50 | 89409 | Gabbs | 72 | B | 0 |
Overview
Nevada's 4th District serving an estimated 131,173,111 residents encompasses 146 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is B (74/100).
1863 EPA violations have been recorded across this district's water systems. 935 are health-based violations. About 77% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Contaminant 0700 — 930 violations
- Total Trihalomethanes (TTHM) — 387 violations
- Consumer Confidence Report Rule — 326 violations
- Surface Water Treatment Rule — 97 violations
- Lead — 41 violations
Housing Context
Homes in this district were built on average around 1991 (~35 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 146 ZIP codes in Nevada's 4th District.