Oklahoma — 1st District
119th Congress · 64 ZIP codes · Avg score 85/100 · Grade A · Updated 2026-06-03
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-06-03
Top Contaminants
ZIP Codes in This District
64 ZIP codes tracked in Oklahoma's 1st District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 74121 | Tulsa | 94 | A | 17 (1 health) |
| 2 | 74131 | Tulsa | 94 | A | 17 (1 health) |
| 3 | 74141 | Tulsa | 94 | A | 17 (1 health) |
| 4 | 74147 | Tulsa | 94 | A | 17 (1 health) |
| 5 | 74148 | Tulsa | 94 | A | 17 (1 health) |
| 6 | 74149 | Tulsa | 94 | A | 17 (1 health) |
| 7 | 74152 | Tulsa | 94 | A | 17 (1 health) |
| 8 | 74156 | Tulsa | 94 | A | 17 (1 health) |
| 9 | 74159 | Tulsa | 94 | A | 17 (1 health) |
| 10 | 74169 | Tulsa | 94 | A | 17 (1 health) |
| 11 | 74171 | Tulsa | 94 | A | 17 (1 health) |
| 12 | 74172 | Tulsa | 94 | A | 17 (1 health) |
| 13 | 74182 | Tulsa | 94 | A | 17 (1 health) |
| 14 | 74186 | Tulsa | 94 | A | 17 (1 health) |
| 15 | 74187 | Tulsa | 94 | A | 17 (1 health) |
| 16 | 74192 | Tulsa | 94 | A | 17 (1 health) |
| 17 | 74193 | Tulsa | 94 | A | 17 (1 health) |
| 18 | 74101 | Tulsa | 91 | A | 17 (1 health) |
| 19 | 74102 | Tulsa | 91 | A | 17 (1 health) |
| 20 | 74103 | Tulsa | 91 | A | 17 (1 health) |
| 21 | 74117 | Tulsa | 91 | A | 17 (1 health) |
| 22 | 74119 | Tulsa | 91 | A | 17 (1 health) |
| 23 | 74126 | Tulsa | 91 | A | 17 (1 health) |
| 24 | 74134 | Tulsa | 91 | A | 17 (1 health) |
| 25 | 74150 | Tulsa | 91 | A | 17 (1 health) |
| 26 | 74153 | Tulsa | 91 | A | 17 (1 health) |
| 27 | 74155 | Tulsa | 91 | A | 17 (1 health) |
| 28 | 74157 | Tulsa | 91 | A | 17 (1 health) |
| 29 | 74158 | Tulsa | 91 | A | 17 (1 health) |
| 30 | 74170 | Tulsa | 91 | A | 17 (1 health) |
| 31 | 74073 | Sperry | 89 | A | 2 |
| 32 | 74104 | Tulsa | 86 | A | 17 (1 health) |
| 33 | 74106 | Tulsa | 86 | A | 17 (1 health) |
| 34 | 74108 | Tulsa | 86 | A | 17 (1 health) |
| 35 | 74110 | Tulsa | 86 | A | 17 (1 health) |
| 36 | 74116 | Tulsa | 86 | A | 17 (1 health) |
| 37 | 74120 | Tulsa | 86 | A | 17 (1 health) |
| 38 | 74127 | Tulsa | 86 | A | 17 (1 health) |
| 39 | 74137 | Tulsa | 86 | A | 17 (1 health) |
| 40 | 74021 | Collinsville | 81 | B | 12 (1 health) |
| 41 | 74107 | Tulsa | 81 | B | 17 (1 health) |
| 42 | 74114 | Tulsa | 81 | B | 17 (1 health) |
| 43 | 74115 | Tulsa | 81 | B | 17 (1 health) |
| 44 | 74128 | Tulsa | 81 | B | 17 (1 health) |
| 45 | 74130 | Tulsa | 81 | B | 17 (1 health) |
| 46 | 74132 | Tulsa | 81 | B | 17 (1 health) |
| 47 | 74133 | Tulsa | 81 | B | 17 (1 health) |
| 48 | 74136 | Tulsa | 81 | B | 17 (1 health) |
| 49 | 74145 | Tulsa | 81 | B | 17 (1 health) |
| 50 | 74146 | Tulsa | 81 | B | 17 (1 health) |
Overview
Oklahoma's 1st District serving an estimated 22,350,822 residents encompasses 64 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is A (85/100).
1281 EPA violations have been recorded across this district's water systems. 343 are health-based violations. About 95% 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 — 368 violations
- Haloacetic Acids (HAA5) — 314 violations
- Total Trihalomethanes (TTHM) — 170 violations
- Contaminant 0800 — 136 violations
- Stage 2 DBP Rule — 110 violations
Housing Context
Homes in this district were built on average around 1970 (~56 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 64 ZIP codes in Oklahoma's 1st District.