Arizona — 7th District
119th Congress · 75 ZIP codes · Avg score 61/100 · Grade C · Updated 2026-07-17
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-07-17
ZipCheckup tracks water safety for 75 ZIP codes in Arizona's 7th District: the district earns a grade C (61/100). 8,490 EPA violations on record, 1,176 health-based.
Top Contaminants
ZIP Codes in This District
75 ZIP codes tracked in Arizona's 7th District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 85601 | Arivaca | 83 | B | 0 |
| 2 | 85624 | Patagonia | 82 | B | 10 (1 health) |
| 3 | 85349 | San Luis | 81 | B | 8 (2 health) |
| 4 | 85392 | Avondale | 81 | B | 4 |
| 5 | 85648 | Rio Rico | 81 | B | 2 |
| 6 | 85629 | Sahuarita | 80 | B | 4 |
| 7 | 85633 | Sasabe | 80 | B | 6 |
| 8 | 85350 | Somerton | 79 | B | 6 |
| 9 | 85620 | Naco | 79 | B | 12 (3 health) |
| 10 | 85645 | Amado | 79 | B | 14 (1 health) |
| 11 | 85622 | Green Valley | 78 | B | 14 (1 health) |
| 12 | 85323 | Avondale | 76 | B | 4 |
| 13 | 85603 | Bisbee | 76 | B | 10 (2 health) |
| 14 | 85607 | Douglas | 76 | B | 19 (4 health) |
| 15 | 85321 | Ajo | 75 | B | 17 |
| 16 | 85337 | Gila Bend | 75 | B | 7 |
| 17 | 85608 | Douglas | 74 | B | 19 (4 health) |
| 18 | 85655 | Douglas | 74 | B | 19 (4 health) |
| 19 | 86555 | Douglas | 74 | B | 19 (4 health) |
| 20 | 85662 | Nogales | 71 | B | 41 (4 health) |
| 21 | 85637 | Sonoita | 70 | B | 20 (3 health) |
| 22 | 85628 | Nogales | 68 | C | 41 (4 health) |
| 23 | 85646 | Tubac | 68 | C | 21 |
| 24 | 85336 | Gadsden | 64 | C | 7 |
| 25 | 85329 | Cashion | 63 | C | 0 |
| 26 | 85621 | Nogales | 63 | C | 41 (4 health) |
| 27 | 85626 | Pirtleville | 63 | C | 0 |
| 28 | 85353 | Tolleson | 61 | C | 6 |
| 29 | 85369 | Yuma | 59 | C | 72 (19 health) |
| 30 | 85139 | Maricopa | 58 | C | 72 (27 health) |
| 31 | 85701 | Tucson | 58 | C | 218 (29 health) |
| 32 | 85706 | Tucson | 58 | C | 218 (29 health) |
| 33 | 85711 | Tucson | 58 | C | 218 (29 health) |
| 34 | 85713 | Tucson | 58 | C | 218 (29 health) |
| 35 | 85714 | Tucson | 58 | C | 218 (29 health) |
| 36 | 85743 | Tucson | 58 | C | 218 (29 health) |
| 37 | 85746 | Tucson | 58 | C | 218 (29 health) |
| 38 | 85615 | Hereford | 55 | C | 0 |
| 39 | 85640 | Tumacacori | 55 | C | 0 |
| 40 | 85364 | Yuma | 54 | D | 72 (19 health) |
| 41 | 85341 | Lukeville | 53 | D | 0 |
| 42 | 85611 | Elgin | 53 | D | 0 |
| 43 | 85617 | Mc Neal | 53 | D | 0 |
| 44 | 85634 | Sells | 53 | D | 0 |
| 45 | 85639 | Topawa | 53 | D | 0 |
| 46 | 85705 | Tucson | 53 | D | 218 (29 health) |
| 47 | 85719 | Tucson | 53 | D | 218 (29 health) |
| 48 | 85735 | Tucson | 53 | D | 218 (29 health) |
| 49 | 85745 | Tucson | 53 | D | 218 (29 health) |
| 50 | 85756 | Tucson | 53 | D | 218 (29 health) |
Overview
Arizona's 7th District encompasses 75 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (61/100).
8490 EPA violations have been recorded across this district's water systems. 1176 are health-based violations. About 87% 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 - 1677 violations
- Lead and Copper Rule - 1062 violations
- Revised Total Coliform Rule - 841 violations
- Stage 1 DBP Rule - 654 violations
- E. coli - 542 violations
Housing Context
Homes in this district were built on average around 1981 (~45 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 75 ZIP codes in Arizona's 7th District.