Texas — 30th District
119th Congress · 110 ZIP codes · Avg score 95/100 · Grade A · Updated 2026-07-17
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-07-17
ZipCheckup tracks water safety for 110 ZIP codes in Texas's 30th District: the district earns a grade A (95/100). 422 EPA violations on record, 29 health-based.
Top Contaminants
ZIP Codes in This District
100 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 | 75017 | Irving | 99 | A | 0 |
| 3 | 75037 | Irving | 99 | A | 0 |
| 4 | 75106 | Cedar Hill | 99 | A | 0 |
| 5 | 75123 | Desoto | 98 | A | 3 |
| 6 | 75222 | Dallas | 98 | A | 3 |
| 7 | 75242 | Dallas | 98 | A | 3 |
| 8 | 75245 | Dallas | 98 | A | 3 |
| 9 | 75249 | Dallas | 98 | A | 3 |
| 10 | 75250 | Dallas | 98 | A | 3 |
| 11 | 75260 | Dallas | 98 | A | 3 |
| 12 | 75261 | Dallas | 98 | A | 3 |
| 13 | 75262 | Dallas | 98 | A | 3 |
| 14 | 75263 | Dallas | 98 | A | 3 |
| 15 | 75264 | Dallas | 98 | A | 3 |
| 16 | 75266 | Dallas | 98 | A | 3 |
| 17 | 75267 | Dallas | 98 | A | 3 |
| 18 | 75270 | Dallas | 98 | A | 3 |
| 19 | 75277 | Dallas | 98 | A | 3 |
| 20 | 75283 | Dallas | 98 | A | 3 |
| 21 | 75284 | Dallas | 98 | A | 3 |
| 22 | 75285 | Dallas | 98 | A | 3 |
| 23 | 75286 | Dallas | 98 | A | 3 |
| 24 | 75301 | Dallas | 98 | A | 3 |
| 25 | 75310 | Dallas | 98 | A | 3 |
| 26 | 75312 | Dallas | 98 | A | 3 |
| 27 | 75313 | Dallas | 98 | A | 3 |
| 28 | 75315 | Dallas | 98 | A | 3 |
| 29 | 75320 | Dallas | 98 | A | 3 |
| 30 | 75326 | Dallas | 98 | A | 3 |
| 31 | 75334 | Dallas | 98 | A | 3 |
| 32 | 75336 | Dallas | 98 | A | 3 |
| 33 | 75339 | Dallas | 98 | A | 3 |
| 34 | 75340 | Dallas | 98 | A | 3 |
| 35 | 75342 | Dallas | 98 | A | 3 |
| 36 | 75343 | Dallas | 98 | A | 3 |
| 37 | 75344 | Dallas | 98 | A | 3 |
| 38 | 75353 | Dallas | 98 | A | 3 |
| 39 | 75355 | Dallas | 98 | A | 3 |
| 40 | 75356 | Dallas | 98 | A | 3 |
| 41 | 75357 | Dallas | 98 | A | 3 |
| 42 | 75358 | Dallas | 98 | A | 3 |
| 43 | 75359 | Dallas | 98 | A | 3 |
| 44 | 75360 | Dallas | 98 | A | 3 |
| 45 | 75364 | Dallas | 98 | A | 3 |
| 46 | 75367 | Dallas | 98 | A | 3 |
| 47 | 75368 | Dallas | 98 | A | 3 |
| 48 | 75370 | Dallas | 98 | A | 3 |
| 49 | 75371 | Dallas | 98 | A | 3 |
| 50 | 75372 | Dallas | 98 | A | 3 |
Overview
Texas's 30th District encompasses 110 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is A (95/100).
422 EPA violations have been recorded across this district's water systems. 29 are health-based violations. About 91% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Consumer Confidence Report Rule - 119 violations
- Lead and Copper Rule - 114 violations
- Total Trihalomethanes (TTHM) - 90 violations
- Stage 1 DBP Rule - 24 violations
- Stage 2 DBP Rule - 20 violations
Housing Context
Homes in this district were built on average around 1986 (~40 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 110 ZIP codes in Texas's 30th District.