Merced Water Quality Report
12 cities ranked · Average grade: B · California
Avg Score
76.1
Cities Ranked
12
Health Violations
12
PFAS Detected
6
76.1
County avg score
12
Cities ranked
67%
A or B grade
0%
D or F grade
12
Health violations
6
PFAS detected
Grade Distribution
How Merced cities scored
A
3
25%
Excellent
B
5
42%
Good
C
4
33%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs California average
▼ 0.4 pts below state average
City Map
Water quality across Merced
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Merced
Best cities
Worst cities
County context
1
Superfund site in Merced
5
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Merced
Industrial polluters nearby
Facilities reporting the most surface-water releases in Merced, 2023.
Total reported releases to surface water: 5 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
O'KEEFFE MERCED, CA95341 | Acrylamide | 5 |
INGOMAR PACKING LOS BANOS, CA93635 | — | — |
CALIFORNIA DAIRIES INC LOS BANOS LOS BANOS, CA93635 | — | — |
GALLO CHEESE PLANT ATWATER, CA95301 | — | — |
DOLE PACKAGED FOODS LLC ATWATER, CA95301 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Merced
Superfund sites nearby
Federally tracked hazardous-waste sites within Merced on the EPA National Priorities List.
- CASTLE AIR FORCE BASE 6 AREAS
Source: EPA Superfund National Priorities List
Full Rankings
All 12 cities in Merced
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Santa Nella | A | 91.2 | 2K | 20 | Health Unresolved | |
| 2 | Delhi | A- | 87.7 | 8K | 17 | Health PFAS Unresolved | |
| 3 | Winton | A- | 86.1 | 10K | 9 | Health Unresolved | |
| 4 | Atwater | B+ | 83.8 | 29K | 8 | Health PFAS Unresolved | |
| 5 | Planada | B+ | 83.4 | 4K | 9 | Health PFAS Unresolved | |
| 6 | Gustine | B+ | 81.7 | 6K | 19 | Health Unresolved | |
| 7 | Los Banos | B | 75.7 | 49K | 36 | Health Unresolved | |
| 8 | Le Grand | B- | 73.3 | 2K | 19 | Health Unresolved | |
| 9 | Merced | C+ | 68.4 | 97K | 29 | Health PFAS Unresolved | |
| 10 | Dos Palos | C | 64.3 | 7K | 47 | Health Unresolved | |
| 11 | Hilmar | C | 60.3 | 6K | 19 | Health Unresolved | |
| 12 | Livingston | C- | 57.8 | 15K | 318 | Health Unresolved |