Texas — 30th District
119th Congress · 67 ZIP codes · Avg score 88/100 · Grade A · Updated 2026-06-03
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-06-03
Top Contaminants
ZIP Codes in This District
67 ZIP codes tracked in Texas's 30th District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 75014 | Irving | 99 | A | 0 |
| 2 | 75015 | Irving | 99 | A | 0 |
| 3 | 75016 | Irving | 99 | A | 0 |
| 4 | 75017 | Irving | 99 | A | 0 |
| 5 | 75030 | Rowlett | 99 | A | 0 |
| 6 | 75037 | Irving | 99 | A | 0 |
| 7 | 75039 | Irving | 99 | A | 0 |
| 8 | 75099 | Coppell | 99 | A | 1 |
| 9 | 75106 | Cedar Hill | 99 | A | 0 |
| 10 | 75123 | Desoto | 98 | A | 3 |
| 11 | 77491 | Katy | 97 | A | 1 |
| 12 | 75045 | Garland | 96 | A | 3 |
| 13 | 75047 | Garland | 96 | A | 3 |
| 14 | 75049 | Garland | 96 | A | 3 |
| 15 | 75010 | Carrollton | 95 | A | 0 |
| 16 | 75038 | Irving | 95 | A | 0 |
| 17 | 75063 | Irving | 95 | A | 0 |
| 18 | 75088 | Rowlett | 95 | A | 0 |
| 19 | 75089 | Rowlett | 95 | A | 0 |
| 20 | 75138 | Duncanville | 95 | A | 0 |
| 21 | 75141 | Hutchins | 95 | A | 0 |
| 22 | 75172 | Wilmer | 95 | A | 0 |
| 23 | 75001 | Addison | 94 | A | 9 (1 health) |
| 24 | 75159 | Seagoville | 94 | A | 5 (1 health) |
| 25 | 75114 | Crandall | 93 | A | 10 (2 health) |
| 26 | 75185 | Mesquite | 93 | A | 4 |
| 27 | 75187 | Mesquite | 93 | A | 4 |
| 28 | 77492 | Katy | 93 | A | 1 |
| 29 | 75046 | Garland | 92 | A | 3 |
| 30 | 75182 | Sunnyvale | 92 | A | 3 |
| 31 | 75007 | Carrollton | 90 | A | 0 |
| 32 | 75011 | Carrollton | 90 | A | 0 |
| 33 | 75019 | Coppell | 90 | A | 1 |
| 34 | 75048 | Sachse | 90 | A | 0 |
| 35 | 75062 | Irving | 90 | A | 0 |
| 36 | 75104 | Cedar Hill | 90 | A | 0 |
| 37 | 75116 | Duncanville | 90 | A | 0 |
| 38 | 75137 | Duncanville | 90 | A | 0 |
| 39 | 75134 | Lancaster | 89 | A | 7 (1 health) |
| 40 | 75181 | Mesquite | 89 | A | 4 |
| 41 | 75040 | Garland | 87 | A | 3 |
| 42 | 75043 | Garland | 87 | A | 3 |
| 43 | 75044 | Garland | 87 | A | 3 |
| 44 | 75053 | Grand Prairie | 87 | A | 225 (4 health) |
| 45 | 75054 | Grand Prairie | 87 | A | 225 (4 health) |
| 46 | 75006 | Carrollton | 85 | A | 0 |
| 47 | 75060 | Irving | 85 | A | 0 |
| 48 | 75061 | Irving | 85 | A | 0 |
| 49 | 75115 | Desoto | 84 | B | 3 |
| 50 | 75146 | Lancaster | 84 | B | 7 (1 health) |
Overview
Texas's 30th District serving an estimated 9,191,955 residents encompasses 67 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is A (88/100).
1650 EPA violations have been recorded across this district's water systems. 307 are health-based violations. About 61% 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 — 179 violations
- Gross Alpha — 160 violations
- Gross Beta — 115 violations
- Consumer Confidence Report Rule — 91 violations
- Lead and Copper Rule — 87 violations
Housing Context
Homes in this district were built on average around 1990 (~36 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 67 ZIP codes in Texas's 30th District.