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Environmental compliance · county

Environmental compliance in Ventura County

14,054 active EPA-regulated sites in Ventura County, California: 60 with an identified violation, 3 in significant violation, 692 inspections and $8.6 million in penalties over five years — EPA ECHO, as of October 18, 2026.

Cite: FACTANKER, https://factanker.com/us/ca/ventura-county/environmental-compliance

How many facilities in Ventura County, California are regulated by the EPA, and how many are in violation (as of October 18, 2026)?

MeasureValue
Active EPA-regulated sites14,054
Sites with an identified violation60
Sites in significant violation3
Inspections and evaluations, last 5 years692
Formal enforcement actions, last 5 years133
Penalties, last 5 years (shared federal cases once)$8.6 million

How many active facilities in Ventura County, California fall under each EPA program?

A facility can be in several programs.

ProgramActive sites
Air (Clean Air Act)42
Water discharge permits (Clean Water Act, NPDES)1,264
Hazardous waste (RCRA)13,012
Drinking water systems (SDWA)89
Toxics Release Inventory reporters21
Greenhouse gas reporters (GHGRP)12

Which large facilities in Ventura County, California does the EPA track, and are they in violation?

FacilityCompliance statusQuarters in violation (of 12)Penalties, 5 years
SIMI VALLEY WATER QUALITY CONTROL PLANT
Simi Valley, CA
Significant Violation8$195,000
THE BOEING COMPANY - NASA AREA
Simi Valley, CA
Violation12–
THE BOEING COMPANY - SSFL 1,2,3,4
Simi Valley, CA
Violation12–
NAVAL AIR STATION VENTURA COUNTY (MERGED. SEE NOTE.)
Point Mugu, CA
No Violation Identified10$6,699
VENTURA WATER RECLAMATION FACILITY
Ventura, CA
Unknown10$15,000
OXNARD WASTEWATER TREATMENT PLANT (OWTP)
Oxnard, CA
Violation Identified9–
OJAI VALLEY WWTP
Ventura, CA
No Violation Identified8$9,000
WASTE MANAGEMENT - SIMI VALLEY LANDFILL
Simi Valley, CA
Violation Identified8$41,074
SSFL: SANTA SUSANA FIELD LABORATORY
Simi Valley, CA
Violation Identified6–
NAVAL BASE VENTURA COUNTY - SAN NICOLAS ISLAND
Point Mugu, CA
Unknown5–
CAMARILLO SANITARY DIST WATER RECLAMATION PLANT
Camarillo, CA
Violation Identified4$36,000
ARCOSA LIGHTWEIGHT - FRAZIER PARK
Frazier Park, CA
Violation Identified3$309,879
HILL CANYON WWTP
Camarillo, CA
Violation Identified3$18,000
VENTURA REG SANIT DIST - TOLAND RD LANDFILLL
Santa Paula, CA
Violation Identified3$12,959
CALLEGUAS MWD LAKE BARD WATER PLANT
Thousand Oaks, CA
Violation Identified2–
ORMOND BEACH GENERATING STATION
Oxnard, CA
Unknown2–
THE PROCTER & GAMBLE PAPER PRODUCT CO
Oxnard, CA
Violation Identified2$19,410
AERA ENERGY LLC
Ventura, CA
No Violation Identified1$1,218
E. F. OXNARD, INC.
Oxnard, CA
No Violation Identified1$14,370
NEW-INDY OXNARD LLC
Oxnard, CA
No Violation Identified1$1,255
TFX AVIATION INC.
Newbury Park, CA
No Violation Identified1–
BOEING CO SSFL ETEC AREA I V
Simi Valley, CA
No Violation Identified0–
CRIMSON PIPELINE, LP
Piru, CA
No Violation Identified0–
CRIMSON PIPELINE, LP
Ventura, CA
No Violation Identified0–
CSUCI SITE AUTHORITY
Camarillo, CA
No Violation Identified0–
MANDALAY GENERATING STATION
Oxnard, CA
No Violation Identified0–
SANTA PAULA WASTEWATER RECOVERY PLANT
Santa Paula, CA
No Violation Identified0–
TENBY PRODUCTION FACILITY
Oxnard, CA
No Violation Identified0–
U.S. DOE ENERGY TECHNOLOGY ENGINEERING CENTER (ETEC)
Simi Valley, CA
No Violation Identified0–

All figures for Ventura County · California · United States

EPA Enforcement and Compliance History Online (ECHO), weekly national export. Counts cover active sites in the Facility Registry Service; inspections, formal actions and penalties cover the last five years, quarters in violation the last three years. The EPA attributes a case that covers several facilities to each of them; area penalty totals here count an amount shared through the same federal case once, facility figures show the amount attributed to that facility. Large facilities are Clean Air Act majors, Clean Water Act majors and large hazardous waste generators or handlers. Source record.

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