Ventura, CA
Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology.
Environmental data for Ventura in California · Population: 838,259
TRI sites such as Baxalta US Inc; The Procter & Gamble Paper Product Co; New-Indy Oxnard LLC; SDWIS systems such as OXNARD WATER DEPT; VENTURA WATER DEPARTMENT; VENTURA WWD NO. 8 - SIMI VALLEY; NPL sites such as Halaco Engineering Company; Pacific Coast Pipe Lines anchor Ventura, CA's EPA extract. Derived burden score 61/100 (High Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
Health-flagged SDWIS rows in Ventura include VENTURA WATER DEPARTMENT; CASITAS MUNICIPAL WATER DIST; VENTURA RIVER WATER DISTRICT, while Baxalta US Inc leads reported TRI pounds among local Form R filers. AQS median AQI 50 / peak 176 in 2024.
Burden score 61/100 (High Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Ventura -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.
Release-over-release change
What changed for Ventura, CA: EPA TRI 2023 reporting year
Same facilities, both years
-1.7%
19 facilities that filed in 2022 and 2023
Whole inventory
-2.9%
59.9 thousand lb → 58.2 thousand lb, every facility that filed
Between the two reporting years, 0 facilities filed for the first time and 3 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Ventura, CA's total reported releases fell from 59.2 thousand lb in 2022 to 58.2 thousand lb in 2023, based on EPA TRI filings.
- Ventura, CA's water releases rose from 0 lb in 2022 to 28 lb in 2023, based on EPA TRI filings.
- Ventura, CA's land releases rose from 2.4 thousand lb in 2022 to 3.8 thousand lb in 2023, based on EPA TRI filings.
- Ventura, CA's off-site transfers rose from 11.0 thousand lb in 2022 to 12.3 thousand lb in 2023, based on EPA TRI filings.
Air Quality History (2020–2024)
EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.
| Year | Good | Moderate | Unhealthy (SG) | Max AQI |
|---|---|---|---|---|
| 2024 | 191 (52%) | 160 | 14 | 176 |
| 2023 | 220 (60%) | 133 | 12 | 136 |
| 2022 | 171 (47%) | 183 | 11 | 140 |
| 2021 | 157 (43%) | 198 | 10 | 122 |
| 2020 | 185 (51%) | 155 | 21 | 174 |
Source: EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)
For real-time air quality readings and pollutant breakdowns in California, see the EPA's AirNow.gov.
Water Systems (57)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| OXNARD WATER DEPT | 200,232 | 0 |
| VENTURA WATER DEPARTMENT | 113,500 | 2 |
| VENTURA WWD NO. 8 - SIMI VALLEY | 94,738 | 0 |
| CITY OF THOUSAND OAKS WATER DEPARTMENT | 53,157 | 0 |
| CAMARILLO WATER DEPT | 46,824 | 0 |
| VENTURA CWWD NO. 1 - MOORPARK | 35,514 | 0 |
| CAMROSA WATER DISTRICT | 32,700 | 0 |
| PORT HUENEME CITY WATER DEPT | 21,407 | 0 |
| FILLMORE WATER DEPT | 16,419 | 0 |
| TRIUNFO WATER & SANITATION DISTRICT | 13,898 | 0 |
| CASITAS MUNICIPAL WATER DIST | 11,005 | 4 |
| NAVAL BASE VENTURA COUNTY, PORT HUENEME | 8,625 | 0 |
| OJAI WATER SYSTEM | 6,801 | 0 |
| VENTURA RIVER WATER DISTRICT | 6,100 | 8 |
| NAVAL BASE VENTURA COUNTY, POINT MUGU | 5,700 | 1 |
| PLEASANT VALLEY MUTUAL WATER CO | 5,000 | 0 |
| CHANNEL ISLANDS BEACH CSD | 4,560 | 0 |
| MEINERS OAKS CWD | 4,200 | 0 |
| FRAZIER PARK PUD | 2,592 | 2 |
| CRESTVIEW MUTUAL WATER CO | 2,079 | 0 |
| VENTURA CWWD NO. 17 - BELL CANYON | 1,946 | 0 |
| VENTURA CWWD NO. 38 - LAKE SHERWOOD | 1,759 | 0 |
| VENTURA CWWD NO. 19 - SOMIS | 1,429 | 0 |
| GARDEN ACRES MUTUAL WATER CO | 1,335 | 0 |
| LIMONEIRA RANCH #1 | 1,187 | 0 |
| DEMPSEY ROAD MUTUAL WATER CO | 990 | 0 |
| RIO MANOR MUTUAL WATER CO | 983 | 0 |
| PINON PINES MWC | 908 | 15 |
| LAKE OF THE WOODS MWC | 779 | 24 |
| BRANDEIS BARDIN INSTITUTE | 665 | 0 |
| KRISTA MUTUAL WATER COMPANY | 504 | 0 |
| PEARLAND ACRES MHP | 501 | 1 |
| STRICKLAND MUTUAL WATER COMPANY | 429 | 0 |
| FILLMORE IRRIGATION CO | 353 | 0 |
| SIETE ROBLES MUTUAL WATER CO | 323 | 1 |
| U.S.N., SAN NICOLAS ISLAND | 254 | 0 |
| CASITAS MUTUAL WATER COMPANY | 238 | 1 |
| DEL NORTE MUTUAL WATER CO. | 215 | 9 |
| SATICOY COUNTRY CLUB-CITY OF VENTURA | 196 | 1 |
| SIESTA MOBILE HOME PARK | 160 | 1 |
| ELKINS RANCH | 150 | 2 |
| MIDDLE ROAD MUTUAL WATER CO | 134 | 0 |
| SOLANO VERDE MUTUAL WATER CO | 100 | 0 |
| LAKE OF THE WOODS MOBILE VILLAGE | 82 | 10 |
| PRIMROSE LANE APARTMENTS | 73 | 0 |
| TICO MUTUAL WATER CO | 72 | 0 |
| COMMUNITY MUTUAL WATER CO | 65 | 0 |
| MIDWAY MOBILEHOME PARK | 50 | 0 |
| SAN CAYETANO MUTUAL WATER CO | 43 | 0 |
| MT ARARAT MOBILE HOME PARK | 42 | 0 |
| KROTONA INSTITUTE | 30 | 1 |
| RINCON WATER & ROAD WORKS | 25 | 17 |
| WATERS ROAD DOMESTIC USERS GROUP | 25 | 0 |
| MEADOW LAKE APARTMENTS | 22 | 2 |
| UNITED WTR CONS DIST | 0 | 0 |
| CALLEGUAS MUNICIPAL WATER DIST | 0 | 0 |
| PORT HUENEME WATER AGENCY | 0 | 0 |
TRI Facilities (29)
Superfund Sites (2)
| Site Name | Status | HRS Score |
|---|---|---|
| Halaco Engineering Company | NPL Site | 58.31 |
| Pacific Coast Pipe Lines | NPL Site | 46.01 |
Cities in Ventura (18)
Frequently Asked Questions
What is the environmental risk level in Ventura, California? ▼
Are there Superfund sites in Ventura? ▼
How many toxic release facilities are in Ventura? ▼
What is the air quality in Ventura? ▼
Is the drinking water safe in Ventura? ▼
What environmental agencies cover Ventura? ▼
What does this county environmental profile show?
This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.
Read our methodology - how this data is sourced, computed, and verified.