EPA Air · by county
Air-emissions sources in Riverside County, California
- 65Facilities
Every stationary source in Riverside County, California that holds a Clean Air Act permit or is otherwise tracked by an air agency — planned, under construction, operating, seasonal or temporarily closed. Sources EPA records as permanently closed are not listed.
Every source’s record in Riverside County
Each of the 63 operating major, synthetic minor and minor sources in Riverside County, California has a record page: every source in Riverside County, A to Z.
By emissions classification in Riverside County
A source’s classification is the size band its potential emissions put it in: a major source is large enough to need a Title V operating permit, a synthetic minor has accepted limits to stay below that line, and a minor source sits below it outright.
- Major source 40
- Minor source 24
Inspections in Riverside County, by year
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source.
- 2026 inspections 28
- 2025 inspections 40
- 2024 inspections 48
- 2023 inspections 33
- 2022 inspections 35
- 2021 inspections 31
- 2020 inspections 50
- 2019 inspections 80
- 2018 inspections 62
- 2017 inspections 56
Stack tests in Riverside County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2026 stack tests 4
- 2025 stack tests 29
- 2024 stack tests 31
- 2023 stack tests 22
- 2022 stack tests 20
- 2021 stack tests 40
- 2020 stack tests 35
- 2019 stack tests 22
- 2018 stack tests 46
- 2017 stack tests 31
Inspections in Riverside County, year by year · Stack tests in Riverside County, year by year
Other counties in California
Every county in the state with at least three sources on file.
- Los Angeles County 390
- Madera County 22
- Marin County 5
- Mendocino County 3
- Merced County 23
- Modoc County 4
- Monterey County 14
- Napa County 5
- Orange County 110
- Placer County 42
- Sacramento County 97
- San Bernardino County 123
- San Diego County 126
- San Francisco County 36
- San Joaquin County 74
- San Luis Obispo County 16
- San Mateo County 34
- Santa Barbara County 136
- Santa Clara County 51
Facilities
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register for Riverside county, CA. It lists 65 facilities in Riverside county and 40 major sources.