55.2
County avg score
12
Cities ranked
17%
A or B grade
67%
D or F grade
11
Health violations
9
PFAS detected
Grade Distribution
How Pinal cities scored
A
2
17%
Excellent
B
0
0%
Good
C
2
17%
Fair
D
6
50%
Poor
F
2
17%
Failing
Comparison
County vs Arizona average
▼ 13.2 pts below state average
City Map
Water quality across Pinal
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Pinal
Best cities
Worst cities
County context
2
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Pinal
Industrial polluters nearby
Facilities reporting the most surface-water releases in Pinal, 2023.
Total reported releases to surface water: 2 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
KLOECKNER METALS CORP APACHE JUNCTION, AZ85120 | Manganese | 2 |
WESTERN EMULSIONS COOLIDGE COOLIDGE, AZ85128 | — | — |
BEST BLOCK - COOLIDGE AZ PLANT COOLIDGE, AZ85128 | — | — |
CALPORTLAND CO COOLIDGE- DIABLO COOLIDGE, AZ85128 | — | — |
NIKOLA MOTOR CO COOLIDGE, AZ85128 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 12 cities in Pinal
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Oracle | A+ | 95 | 11K | 15 | Health Unresolved | |
| 2 | San Manuel | A- | 88.7 | 5K | 30 | Health Unresolved | |
| 3 | Superior | C- | 58.1 | 4K | 401 | Unresolved | |
| 4 | Mammoth | C- | 57.8 | 1K | 102 | Health Lead Unresolved | |
| 5 | Red Rock | D+ | 53.5 | 4K | 87 | Health Unresolved | |
| 6 | Eloy | D | 47.2 | 17K | 781 | Health Unresolved | |
| 7 | Johnson Ranch | D | 47.1 | 87K | 297 | Health PFAS Unresolved | |
| 8 | Kearny | D | 47 | 2K | 711 | Health Unresolved | |
| 9 | Maricopa | D | 45.6 | 89K | 1389 | Health Unresolved | |
| 10 | Catalina | D | 45.1 | 18K | 1027 | Health Unresolved | |
| 11 | Apache Junction | F | 43.3 | 16K | 713 | Health Unresolved | |
| 12 | Florence | F | 34 | 17K | 1427 | Health Unresolved |