Colorado — 6th District
119th Congress · 31 ZIP codes · Avg score 60/100 · Grade C · Updated 2026-07-19
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-07-19
ZipCheckup tracks water safety for 31 ZIP codes in Colorado's 6th District: the district earns a grade C (60/100). 265 EPA violations on record, 7 health-based.
Top Contaminants
ZIP Codes in This District
31 ZIP codes tracked in Colorado's 6th District.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 80121 | Littleton | 70 | B | 0 |
| 2 | 80128 | Littleton | 70 | B | 0 |
| 3 | 80110 | Englewood | 69 | C | 13 (1 health) |
| 4 | 80201 | Denver | 69 | C | 3 |
| 5 | 80231 | Denver | 69 | C | 3 |
| 6 | 80160 | Littleton | 66 | C | 0 |
| 7 | 80161 | Littleton | 66 | C | 0 |
| 8 | 80165 | Littleton | 66 | C | 0 |
| 9 | 80166 | Littleton | 66 | C | 0 |
| 10 | 80120 | Littleton | 65 | C | 0 |
| 11 | 80122 | Littleton | 65 | C | 0 |
| 12 | 80150 | Englewood | 65 | C | 13 (1 health) |
| 13 | 80151 | Englewood | 65 | C | 13 (1 health) |
| 14 | 80155 | Englewood | 65 | C | 13 (1 health) |
| 15 | 80111 | Englewood | 64 | C | 13 (1 health) |
| 16 | 80112 | Englewood | 64 | C | 13 (1 health) |
| 17 | 80113 | Englewood | 64 | C | 13 (1 health) |
| 18 | 80137 | Watkins | 64 | C | 12 |
| 19 | 80014 | Aurora | 56 | C | 12 |
| 20 | 80015 | Aurora | 56 | C | 12 |
| 21 | 80017 | Aurora | 56 | C | 12 |
| 22 | 80018 | Aurora | 56 | C | 12 |
| 23 | 80010 | Aurora | 51 | D | 12 |
| 24 | 80011 | Aurora | 51 | D | 12 |
| 25 | 80012 | Aurora | 51 | D | 12 |
| 26 | 80013 | Aurora | 51 | D | 12 |
| 27 | 80016 | Aurora | 51 | D | 12 |
| 28 | 80019 | Aurora | 51 | D | 12 |
| 29 | 80040 | Aurora | 51 | D | 12 |
| 30 | 80042 | Aurora | 51 | D | 12 |
| 31 | 80045 | Aurora | 51 | D | 12 |
Overview
Colorado's 6th District encompasses 31 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (60/100).
265 EPA violations have been recorded across this district's water systems. 7 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 - 72 violations
- Consumer Confidence Report Rule - 57 violations
- Surface Water Treatment Rule - 28 violations
- Contaminant 0600 - 26 violations
- E. coli - 15 violations
Housing Context
Homes in this district were built on average around 1985 (~41 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 31 ZIP codes in Colorado's 6th District.