Nevada — 4th District
119th Congress · 89 ZIP codes · Avg score 83/100 · Grade B · Updated 2026-07-19
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-07-19
ZipCheckup tracks water safety for 89 ZIP codes in Nevada's 4th District: the district earns a grade B (83/100). 219 EPA violations on record, 43 health-based.
Top Contaminants
ZIP Codes in This District
89 ZIP codes tracked in Nevada's 4th District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 89031 | North Las Vegas | 99 | A | 0 |
| 2 | 89032 | North Las Vegas | 99 | A | 0 |
| 3 | 89033 | North Las Vegas | 99 | A | 0 |
| 4 | 89036 | North Las Vegas | 99 | A | 0 |
| 5 | 89085 | North Las Vegas | 99 | A | 0 |
| 6 | 89086 | North Las Vegas | 99 | A | 0 |
| 7 | 89087 | North Las Vegas | 99 | A | 0 |
| 8 | 89018 | Indian Springs | 97 | A | 1 |
| 9 | 89070 | Indian Springs | 97 | A | 1 |
| 10 | 89024 | Mesquite | 95 | A | 2 |
| 11 | 89030 | North Las Vegas | 95 | A | 0 |
| 12 | 89034 | Mesquite | 95 | A | 2 |
| 13 | 89081 | North Las Vegas | 95 | A | 0 |
| 14 | 89084 | North Las Vegas | 95 | A | 0 |
| 15 | 89111 | Las Vegas | 94 | A | 4 (1 health) |
| 16 | 89116 | Las Vegas | 94 | A | 4 (1 health) |
| 17 | 89126 | Las Vegas | 94 | A | 4 (1 health) |
| 18 | 89127 | Las Vegas | 94 | A | 4 (1 health) |
| 19 | 89133 | Las Vegas | 94 | A | 4 (1 health) |
| 20 | 89137 | Las Vegas | 94 | A | 4 (1 health) |
| 21 | 89143 | Las Vegas | 94 | A | 4 (1 health) |
| 22 | 89150 | Las Vegas | 94 | A | 4 (1 health) |
| 23 | 89151 | Las Vegas | 94 | A | 4 (1 health) |
| 24 | 89152 | Las Vegas | 94 | A | 4 (1 health) |
| 25 | 89153 | Las Vegas | 94 | A | 4 (1 health) |
| 26 | 89154 | Las Vegas | 94 | A | 4 (1 health) |
| 27 | 89155 | Las Vegas | 94 | A | 4 (1 health) |
| 28 | 89157 | Las Vegas | 94 | A | 4 (1 health) |
| 29 | 89158 | Las Vegas | 94 | A | 4 (1 health) |
| 30 | 89159 | Las Vegas | 94 | A | 4 (1 health) |
| 31 | 89160 | Las Vegas | 94 | A | 4 (1 health) |
| 32 | 89162 | Las Vegas | 94 | A | 4 (1 health) |
| 33 | 89164 | Las Vegas | 94 | A | 4 (1 health) |
| 34 | 89166 | Las Vegas | 94 | A | 4 (1 health) |
| 35 | 89170 | Las Vegas | 94 | A | 4 (1 health) |
| 36 | 89173 | Las Vegas | 94 | A | 4 (1 health) |
| 37 | 89177 | Las Vegas | 94 | A | 4 (1 health) |
| 38 | 89179 | Las Vegas | 94 | A | 4 (1 health) |
| 39 | 89180 | Las Vegas | 94 | A | 4 (1 health) |
| 40 | 89185 | Las Vegas | 94 | A | 4 (1 health) |
| 41 | 89193 | Las Vegas | 94 | A | 4 (1 health) |
| 42 | 89195 | Las Vegas | 94 | A | 4 (1 health) |
| 43 | 89199 | Las Vegas | 94 | A | 4 (1 health) |
| 44 | 89011 | Henderson | 93 | A | 1 |
| 45 | 89025 | Moapa | 93 | A | 1 |
| 46 | 89027 | Mesquite | 91 | A | 2 |
| 47 | 89107 | Las Vegas | 91 | A | 4 (1 health) |
| 48 | 89115 | Las Vegas | 91 | A | 4 (1 health) |
| 49 | 89129 | Las Vegas | 91 | A | 4 (1 health) |
| 50 | 89131 | Las Vegas | 91 | A | 4 (1 health) |
Overview
Nevada's 4th District encompasses 89 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is B (83/100).
219 EPA violations have been recorded across this district's water systems. 43 are health-based violations. About 67% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Surface Water Treatment Rule - 52 violations
- Consumer Confidence Report Rule - 46 violations
- Total Trihalomethanes (TTHM) - 41 violations
- Contaminant 0700 - 39 violations
- Lead - 8 violations
Housing Context
Homes in this district were built on average around 1988 (~38 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 89 ZIP codes in Nevada's 4th District.