Texas — 3rd District
119th Congress · 34 ZIP codes · Avg score 90/100 · Grade A · Updated 2026-07-17
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-07-17
ZipCheckup tracks water safety for 34 ZIP codes in Texas's 3rd District: the district earns a grade A (90/100). 118 EPA violations on record, 16 health-based.
Top Contaminants
ZIP Codes in This District
34 ZIP codes tracked in Texas's 3rd District.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 75121 | Copeville | 99 | A | 0 |
| 2 | 75403 | Greenville | 98 | A | 2 |
| 3 | 75404 | Greenville | 98 | A | 2 |
| 4 | 75164 | Josephine | 97 | A | 1 |
| 5 | 75423 | Celeste | 96 | A | 3 |
| 6 | 75013 | Allen | 95 | A | 0 |
| 7 | 75071 | Mckinney | 95 | A | 1 |
| 8 | 75078 | Prosper | 95 | A | 1 |
| 9 | 75094 | Plano | 95 | A | 1 |
| 10 | 75166 | Lavon | 95 | A | 0 |
| 11 | 75407 | Princeton | 94 | A | 3 |
| 12 | 75429 | Commerce | 94 | A | 12 (4 health) |
| 13 | 75496 | Wolfe City | 94 | A | 20 (1 health) |
| 14 | 75135 | Caddo Mills | 93 | A | 2 |
| 15 | 75035 | Frisco | 92 | A | 4 |
| 16 | 75409 | Anna | 91 | A | 9 (1 health) |
| 17 | 75424 | Blue Ridge | 91 | A | 3 (1 health) |
| 18 | 75428 | Commerce | 91 | A | 12 (4 health) |
| 19 | 75023 | Plano | 90 | A | 1 |
| 20 | 75069 | Mckinney | 90 | A | 1 |
| 21 | 75070 | Mckinney | 90 | A | 1 |
| 22 | 75093 | Plano | 90 | A | 1 |
| 23 | 75401 | Greenville | 89 | A | 2 |
| 24 | 75402 | Greenville | 89 | A | 2 |
| 25 | 75098 | Wylie | 88 | A | 1 |
| 26 | 75422 | Campbell | 87 | A | 0 |
| 27 | 75453 | Lone Oak | 87 | A | 0 |
| 28 | 75454 | Melissa | 87 | A | 2 (1 health) |
| 29 | 75485 | Westminster | 87 | A | 0 |
| 30 | 75002 | Allen | 85 | A | 0 |
| 31 | 75097 | Weston | 83 | B | 8 (1 health) |
| 32 | 75173 | Nevada | 82 | B | 0 |
| 33 | 75442 | Farmersville | 81 | B | 23 (3 health) |
| 34 | 75458 | Merit | 66 | C | 0 |
Overview
Texas's 3rd District encompasses 34 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is A (90/100).
118 EPA violations have been recorded across this district's water systems. 16 are health-based violations. About 74% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Stage 1 DBP Rule - 33 violations
- Lead and Copper Rule - 28 violations
- Revised Total Coliform Rule - 18 violations
- Consumer Confidence Report Rule - 14 violations
- Stage 2 DBP Rule - 10 violations
Housing Context
Homes in this district were built on average around 1995 (~31 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 34 ZIP codes in Texas's 3rd District.