Ventura Water Quality Report
14 cities ranked · Average grade: B- · California
Avg Score
73
Cities Ranked
14
Health Violations
13
PFAS Detected
11
73
County avg score
14
Cities ranked
64%
A or B grade
21%
D or F grade
13
Health violations
11
PFAS detected
Grade Distribution
How Ventura cities scored
A
5
36%
Excellent
B
4
29%
Good
C
2
14%
Fair
D
1
7%
Poor
F
2
14%
Failing
Comparison
County vs California average
▼ 3.5 pts below state average
City Map
Water quality across Ventura
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Ventura
County context
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Ventura
Industrial polluters nearby
Facilities reporting the most surface-water releases in Ventura, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
DV NATURAL RESOURCES--BRIGGS MINE TRONA, CA93592 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 14 cities in Ventura
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Thousand Oaks | A | 94.6 | 53K | 1 | Health | |
| 2 | Simi Valley | A | 92 | 96K | 16 | Health Unresolved | |
| 3 | Moorpark | A- | 89 | 41K | 3 | Health Unresolved | |
| 4 | Santa Paula | A- | 86.9 | 33K | 39 | Health Unresolved | |
| 5 | Point Mugu | A- | 85.5 | 15K | 26 | Health Unresolved | |
| 6 | Oak View | B+ | 83.5 | 18K | 29 | Health Unresolved | |
| 7 | Port Hueneme | B+ | 82.7 | 22K | 19 | Unresolved | |
| 8 | Camarillo | B | 77.5 | 88K | 38 | Health PFAS Unresolved | |
| 9 | Fillmore | B- | 72.4 | 17K | 59 | Health Unresolved | |
| 10 | Rosemead | C- | 59.8 | 225K | 118 | Health PFAS Unresolved | |
| 11 | Ojai | C- | 58.9 | 12K | 113 | Health Unresolved | |
| 12 | Ventura | D+ | 51.2 | 115K | 69 | Health Unresolved | |
| 13 | Westlake Village | F | 44.4 | 14K | 230 | Health Unresolved | |
| 14 | Oxnard | F | 43.1 | 213K | 182 | Health Unresolved |