Mono Water Quality Report
5 cities ranked · Average grade: B · California
Avg Score
79.4
Cities Ranked
5
Health Violations
5
PFAS Detected
1
79.4
County avg score
5
Cities ranked
100%
A or B grade
0%
D or F grade
5
Health violations
1
PFAS detected
Grade Distribution
How Mono cities scored
A
1
20%
Excellent
B
4
80%
Good
C
0
0%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs California average
▲ 2.9 pts above state average
City Map
Water quality across Mono
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Mono
County context
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Mono
Industrial polluters nearby
Facilities reporting the most surface-water releases in Mono, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
MARINE CORPS MOUNTAIN WARFARE TRAINING CENTER BRIDGEPORT, CA93517 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 5 cities in Mono
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Lee Vining | A- | 89 | 742 | 26 | Health Unresolved | |
| 2 | Crowley Lake | B+ | 83.9 | 526 | 77 | Health Unresolved | |
| 3 | Mammoth Lakes | B | 78.5 | 9K | 74 | Health Unresolved | |
| 4 | June Lake | B | 75 | 6K | 33 | Health Unresolved | |
| 5 | Bridgeport | B- | 70.7 | 2K | 74 | Health Unresolved |