WaterVerge

Sonoma Water Quality Report

16 cities ranked · Average grade: B · California

Avg Score
78.6
Cities Ranked
16
Health Violations
14
PFAS Detected
8
Live Water Alerts for California →
78.6
County avg score
16
Cities ranked
88%
A or B grade
13%
D or F grade
14
Health violations
8
PFAS detected

How Sonoma cities scored

38%
50%
13%
A
6
38%
Excellent
B
8
50%
Good
C
0
0%
Fair
D
0
0%
Poor
F
2
13%
Failing

County vs California average

B
Sonoma
78.6/100
B
California avg
76.5/100
▲ 2.1 pts above state average

Water quality across Sonoma

Each dot is a city, colored by grade. Click any city to view its full report.

California city water quality map
0
lbs/yr to surface water · top 10 TRI facilities

Top industrial polluters in Sonoma

Industrial polluters nearby

Facilities reporting the most surface-water releases in Sonoma, 2023.

FacilityTop chemicalTo surface water (lbs/yr)
PARKER HANNIFIN CORP EMN NA
Electrical Equipment · PARKER HANNIFIN CORP
ROHNERT PARK, CA94928
CLOVER STORNETTA FARMS INC
Food · NA
PETALUMA, CA94952
U.S. COAST GUARD TRAINING CENTER PETALUMA
Other · US DEPARTMENT OF HOMELAND SECURITY
PETALUMA, CA94952
LGC BIOSEARCH TECHNOLOGIES INC
Chemicals · LGC BIOSEARCH TECHNOLOGIES INC
PETALUMA, CA94954
PERDUE FOODS LLC - PETALUMA POULTRY PROCESSING PLANT
Food · PERDUE FARMS INC
PETALUMA, CA94954

+ 5 more facilities

Source: EPA Toxic Release Inventory (TRI) 2023

All 16 cities in Sonoma

# City Grade Score Score Population Violations Issues
1 Windsor
A+
97.2
26K 3 Health
2 Camp Meeker
A+
97
1K 0 Zero violations
3 Guerneville
A
92.4
10K 12 Health Unresolved
4 Occidental
A
90.5
951 51 Health Unresolved
5 Bodega Bay
A-
89.8
1K 13 Health Unresolved
6 Cotati
A-
89.6
7K 19 Health Unresolved
7 El Verano
B+
84.5
23K 16 PFAS Unresolved
8 Healdsburg
B+
80.6
12K 54 Health Unresolved
9 Petaluma
B
78.5
62K 32 Health Unresolved
10 Sea Ranch
B
78.4
1K 7 Health Unresolved
11 Cloverdale
B
75.6
11K 54 Health Unresolved
12 Sonoma
B-
73.1
13K 35 Health PFAS Unresolved
13 Forestville
B-
72.5
9K 78 Health Unresolved
14 Sebastopol
B-
70.5
8K 124 Health Unresolved
15 Rohnert Park
F
44
55K 407 Health PFAS Unresolved
16 Santa Rosa
F
43.1
186K 820 Health Unresolved
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