Douglas Water Quality Report
6 cities ranked · Average grade: C- · Colorado
Avg Score
59.9
Cities Ranked
6
Health Violations
4
PFAS Detected
5
59.9
County avg score
6
Cities ranked
33%
A or B grade
50%
D or F grade
4
Health violations
5
PFAS detected
Grade Distribution
How Douglas cities scored
A
0
0%
Excellent
B
2
33%
Good
C
1
17%
Fair
D
1
17%
Poor
F
2
33%
Failing
Comparison
County vs Colorado average
▼ 6.2 pts below state average
City Map
Water quality across Douglas
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Douglas
County context
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Douglas
Industrial polluters nearby
Facilities reporting the most surface-water releases in Douglas, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
SMYRNA READY MIX CONCRETE LLC - CASTLE ROCK READY MIX CASTLE ROCK, CO80104 | — | — |
HOLCIM WCR INC CASTLE ROCK READY MIX PLANT CASTLE ROCK, CO80109 | — | — |
HOLCIM WCR INC CENTENNIAL READY MIX PLANT ENGLEWOOD, CO80112 | — | — |
HOLCIM WCR INC FRANKTOWN READY MIX PLANT FRANKTOWN, CO80116 | — | — |
BEST BLOCK - DENB LITTLETON, CO80125 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 6 cities in Douglas
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Castle Pines | B+ | 84.8 | 13K | 72 | Unresolved | |
| 2 | Highlands Ranch | B- | 71.5 | 105K | 47 | Unresolved | |
| 3 | Sedalia | C+ | 68.4 | 525 | 183 | Health Unresolved | |
| 4 | Larkspur | D+ | 51.5 | 4K | 95 | Health Unresolved | |
| 5 | Parker | F | 43.4 | 105K | 499 | Health PFAS Unresolved | |
| 6 | Castle Rock | F | 40 | 116K | 259 | Health Unresolved |