Nevada — 1st District
119th Congress · 30 ZIP codes · Avg score 78/100 · Grade B · Updated 2026-03-22
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-03-22
Top Contaminants
ZIP Codes in This District
30 ZIP codes tracked in Nevada's 1st District.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 89009 | Henderson | 97 | A | 2 |
| 2 | 89016 | Henderson | 97 | A | 2 |
| 3 | 89044 | Henderson | 97 | A | 2 |
| 4 | 89053 | Henderson | 97 | A | 2 |
| 5 | 89077 | Henderson | 97 | A | 2 |
| 6 | 89002 | Henderson | 93 | A | 2 |
| 7 | 89012 | Henderson | 93 | A | 2 |
| 8 | 89052 | Henderson | 93 | A | 2 |
| 9 | 89074 | Henderson | 93 | A | 2 |
| 10 | 89014 | Henderson | 88 | A | 2 |
| 11 | 89015 | Henderson | 88 | A | 2 |
| 12 | 89006 | Boulder City | 85 | A | 14 |
| 13 | 89005 | Boulder City | 81 | B | 14 |
| 14 | 89114 | Las Vegas | 70 | B | 22 (12 health) |
| 15 | 89119 | Las Vegas | 70 | B | 22 (12 health) |
| 16 | 89121 | Las Vegas | 70 | B | 22 (12 health) |
| 17 | 89156 | Las Vegas | 70 | B | 22 (12 health) |
| 18 | 89169 | Las Vegas | 70 | B | 22 (12 health) |
| 19 | 88905 | The Lakes | 66 | C | 0 |
| 20 | 89105 | Las Vegas | 66 | C | 22 (12 health) |
| 21 | 89112 | Las Vegas | 66 | C | 22 (12 health) |
| 22 | 89136 | Las Vegas | 66 | C | 22 (12 health) |
| 23 | 89140 | Las Vegas | 66 | C | 22 (12 health) |
| 24 | 89101 | Las Vegas | 65 | C | 22 (12 health) |
| 25 | 89104 | Las Vegas | 65 | C | 22 (12 health) |
| 26 | 89109 | Las Vegas | 65 | C | 22 (12 health) |
| 27 | 89110 | Las Vegas | 65 | C | 22 (12 health) |
| 28 | 89120 | Las Vegas | 65 | C | 22 (12 health) |
| 29 | 89122 | Las Vegas | 65 | C | 22 (12 health) |
| 30 | 89142 | Las Vegas | 65 | C | 22 (12 health) |
Overview
Nevada's 1st District serving an estimated 28,924,009 residents encompasses 30 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is B (78/100).
402 EPA violations have been recorded across this district's water systems. 192 are health-based violations. About 97% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Contaminant 0700 — 192 violations
- Total Trihalomethanes (TTHM) — 80 violations
- Consumer Confidence Report Rule — 64 violations
- Revised Total Coliform Rule — 26 violations
- Lead — 22 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 30 ZIP codes in Nevada's 1st District.