Adams County, Colorado
25 ZIP codes · Avg score 55/100 · Grade C · Updated
ZipCheckup grade for Adams County: C.
A mixed picture - some signals here are worth your attention.
Across Adams County's 25 ZIP codes, water safety results are uneven - a portion of systems carry active or recent violations, while others meet standards without issues.
How Adams County Compares
How Adams County Compares
Adams County scores 4 points below the Colorado state average (59/100) and 18 points below the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Adams County, Colorado
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11 (asthma 11%, diabetes 9.7%)
Estimated additional annual cost per homeowner: $1,021, driven primarily by flood
41.7% of homes built before 1978 (lead paint era)
Violation History (2022–2024)
→ Stable trendEPA violation counts by year across Adams County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 4 violations. Past 5 years: 10 total (10 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,021
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
188,953 housing units in Adams County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Adams County
Remediation costs are relatively manageable for most homeowners in Adams County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Adams County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Adams County
8 community water systems serving Adams County.
- D
- C
- D
- D
- C
- D
Show all 8 water systems
- D
- D
26 total water systems serve Adams County.
Systems with the most violations in Adams County
5 water systems with recorded EPA violations.
- D
- D
- F
- C
- D
All ZIP Codes in Adams County
25 ZIP codes tracked in Adams County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 80011 | Aurora | 67 | C | 0 | $367K |
| 2 | 80022 | Commerce City | 67 | C | 0 | $448K |
| 3 | 80024 | Dupont | 67 | C | 0 | — |
| 4 | 80045 | Aurora | 67 | C | 0 | — |
| 5 | 80102 | Bennett | 67 | C | 0 | $491K |
| 6 | 80019 | Aurora | 66 | C | 34 | $529K |
| 7 | 80031 | Westminster | 66 | C | 3 | $499K |
| 8 | 80030 | Westminster | 64 | C | 7 | $422K |
| 9 | 80234 | Denver | 53 | D | 21 (2 health) | $494K |
| 10 | 80229 | Denver | 47 | D | 9 | $383K |
| 11 | 80233 | Denver | 47 | D | 8 | $441K |
| 12 | 80241 | Thornton | 47 | D | 8 | $502K |
| 13 | 80601 | Brighton | 47 | D | 9 (1 health) | $472K |
| 14 | 80640 | Henderson | 47 | D | 9 (1 health) | $464K |
| 15 | 80221 | Denver | 45 | D | 46 | $450K |
| 16 | 80602 | Brighton | 45 | D | 22 (9 health) | $639K |
| 17 | 80260 | Denver | 33 | F | 42 (2 health) | $188K |
| 18 | 80035 | Westminster | — | — | — | |
| 19 | 80036 | Westminster | — | — | — | |
| 20 | 80037 | Commerce City | — | — | — | |
| 21 | 80044 | Aurora | — | — | — | |
| 22 | 80046 | Aurora | — | — | — | |
| 23 | 80047 | Aurora | — | — | — | |
| 24 | 80136 | Strasburg | — | — | $496K | |
| 25 | 80614 | Eastlake | — | — | — |
Recommended Buyer Guides for Adams County
Retailer arrangements don't shape what appears here - the selection logic is independent, filtered against EPA detections and the federal hazard data on file for this county.
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Adams County, Colorado
Overview
Adams County in Colorado covers 25 tracked ZIP records with an average Home Safety Score of C (55/100) across 17 scored records.
12 of 17 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 13 health-based violations appear in the available health breakdown.
← Back to Colorado Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.