Colorado — 1st District
119th Congress · 54 ZIP codes · Avg score 66/100 · Grade C · Updated 2026-07-17
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-07-17
ZipCheckup tracks water safety for 54 ZIP codes in Colorado's 1st District: the district earns a grade C (66/100). 162 EPA violations on record, 0 health-based.
Top Contaminants
ZIP Codes in This District
54 ZIP codes tracked in Colorado's 1st District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 80202 | Denver | 69 | C | 3 |
| 2 | 80203 | Denver | 69 | C | 3 |
| 3 | 80205 | Denver | 69 | C | 3 |
| 4 | 80206 | Denver | 69 | C | 3 |
| 5 | 80207 | Denver | 69 | C | 3 |
| 6 | 80211 | Denver | 69 | C | 3 |
| 7 | 80212 | Denver | 69 | C | 3 |
| 8 | 80217 | Denver | 69 | C | 3 |
| 9 | 80218 | Denver | 69 | C | 3 |
| 10 | 80236 | Denver | 69 | C | 3 |
| 11 | 80237 | Denver | 69 | C | 3 |
| 12 | 80238 | Denver | 69 | C | 3 |
| 13 | 80239 | Denver | 69 | C | 3 |
| 14 | 80246 | Denver | 69 | C | 3 |
| 15 | 80249 | Denver | 69 | C | 3 |
| 16 | 80208 | Denver | 65 | C | 3 |
| 17 | 80230 | Denver | 65 | C | 3 |
| 18 | 80243 | Denver | 65 | C | 3 |
| 19 | 80244 | Denver | 65 | C | 3 |
| 20 | 80247 | Denver | 65 | C | 3 |
| 21 | 80248 | Denver | 65 | C | 3 |
| 22 | 80250 | Denver | 65 | C | 3 |
| 23 | 80251 | Denver | 65 | C | 3 |
| 24 | 80252 | Denver | 65 | C | 3 |
| 25 | 80256 | Denver | 65 | C | 3 |
| 26 | 80257 | Denver | 65 | C | 3 |
| 27 | 80259 | Denver | 65 | C | 3 |
| 28 | 80261 | Denver | 65 | C | 3 |
| 29 | 80262 | Denver | 65 | C | 3 |
| 30 | 80263 | Denver | 65 | C | 3 |
| 31 | 80264 | Denver | 65 | C | 3 |
| 32 | 80265 | Denver | 65 | C | 3 |
| 33 | 80266 | Denver | 65 | C | 3 |
| 34 | 80271 | Denver | 65 | C | 3 |
| 35 | 80273 | Denver | 65 | C | 3 |
| 36 | 80274 | Denver | 65 | C | 3 |
| 37 | 80279 | Denver | 65 | C | 3 |
| 38 | 80280 | Denver | 65 | C | 3 |
| 39 | 80281 | Denver | 65 | C | 3 |
| 40 | 80290 | Denver | 65 | C | 3 |
| 41 | 80291 | Denver | 65 | C | 3 |
| 42 | 80293 | Denver | 65 | C | 3 |
| 43 | 80294 | Denver | 65 | C | 3 |
| 44 | 80295 | Denver | 65 | C | 3 |
| 45 | 80299 | Denver | 65 | C | 3 |
| 46 | 80204 | Denver | 64 | C | 3 |
| 47 | 80209 | Denver | 64 | C | 3 |
| 48 | 80210 | Denver | 64 | C | 3 |
| 49 | 80216 | Denver | 64 | C | 3 |
| 50 | 80219 | Denver | 64 | C | 3 |
Overview
Colorado's 1st District encompasses 54 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (66/100).
162 EPA violations have been recorded across this district's water systems. None are health-based. About 100% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Fecal Coliform - 108 violations
- Combined Radium - 54 violations
Housing Context
Homes in this district were built on average around 1975 (~51 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 54 ZIP codes in Colorado's 1st District.