Arapahoe Water Quality Report
9 cities ranked · Average grade: D+ · Colorado
Avg Score
53.2
Cities Ranked
9
Health Violations
9
PFAS Detected
5
53.2
County avg score
9
Cities ranked
22%
A or B grade
78%
D or F grade
9
Health violations
5
PFAS detected
Grade Distribution
How Arapahoe cities scored
A
2
22%
Excellent
B
0
0%
Good
C
0
0%
Fair
D
3
33%
Poor
F
4
44%
Failing
Comparison
County vs Colorado average
▼ 12.9 pts below state average
City Map
Water quality across Arapahoe
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Arapahoe
Best cities
County context
2
Superfund sites in Arapahoe
630
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Arapahoe
Industrial polluters nearby
Facilities reporting the most surface-water releases in Arapahoe, 2023.
Total reported releases to surface water: 630 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
SUNCOR ENERGY COMMERCE CITY REFINERY COMMERCE CITY, CO80022 | Ammonia | 630 |
OWENS CORNING ROOFING & ASPHALT LLC DENVER, CO80216 | Polycyclic aromatic compounds | 0 |
OWENS CORNING ROOFING & ASPHALT LLC DENVER, CO80216 | Polycyclic aromatic compounds | 0 |
INDUSTRIAL CHEMICALS CORP ARVADA, CO80002 | — | — |
READY MIXED CONCRETE PLANT 11 ARVADA, CO80002 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Arapahoe
Superfund sites nearby
Federally tracked hazardous-waste sites within Arapahoe on the EPA National Priorities List.
- BRODERICK WOOD PRODUCTS
- ROCKY MOUNTAIN ARSENAL USARMY
Source: EPA Superfund National Priorities List
Full Rankings
All 9 cities in Arapahoe
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Byers | A | 90.6 | 1K | 8 | Health Unresolved | |
| 2 | Deer Trail | A- | 87 | 2K | 146 | Health Unresolved | |
| 3 | Englewood | D | 49.8 | 100K | 203 | Health Unresolved | |
| 4 | Watkins | D | 49 | 4K | 159 | Health Unresolved | |
| 5 | Glendale | D | 46 | 7K | 213 | Health Unresolved | |
| 6 | Littleton | F | 40.9 | 127K | 341 | Health Unresolved | |
| 7 | Greenwood Village | F | 40.2 | 20K | 268 | Health Unresolved | |
| 8 | Aurora | F | 38.1 | 604K | 1430 | Health Unresolved | |
| 9 | Centennial | F | 36.8 | 106K | 298 | Health PFAS Unresolved |