Clean Air Act stationary source · ICIS-AIR CABAA00006097A1403
SANTA ROSA WATER - LAGUNA TREATMENT PLANT, Santa Rosa, CA: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Major sourceEmissions classification
- Unaddressed-LocalCurrent violation status, as filed
- 3Compliance evaluations since January 1, 2017
- 13High-priority violations since January 1, 2017
- 11Formal enforcement actions since January 1, 2017
SANTA ROSA WATER - LAGUNA TREATMENT PLANT, at 4300 LLANO RD, Santa Rosa in Sonoma County, California, is an operating major source of air pollution on EPA’s ICIS-AIR register. EPA’s file records its current violation status (ICIS-AIR’s high-priority violation field) as “Unaddressed-Local”. Sonoma County is on EPA’s Green Book list of areas that do not meet a national air quality standard. The status and classification are as EPA’s facility file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the source’s current standing, quarter by quarter.
Identity
| Facility as filed | SANTA ROSA WATER - LAGUNA TREATMENT PLANT |
|---|---|
| ICIS-AIR ID | CABAA00006097A1403 |
| EPA facility registry ID | 110000730460 |
| Operating status | Operating |
| Emissions classification | Major source |
| Current violation status (ICIS-AIR high-priority violation field) | Unaddressed-Local |
| Address | 4300 LLANO RD, Santa Rosa, CA 95407 |
| County | Sonoma County |
| In a nonattainment county | Yes (EPA Green Book) |
| Industry (NAICS) | Utilities (NAICS 2213) |
| SIC code | 4952 |
| EPA region | 09 |
| Local air agency | Bay Area Air Quality Management District (Grantee) |
Cited to the EPA ICIS-AIR facility file (ECHO download).
Programs and pollutants
Velarion’s copy of EPA’s ICIS-AIR download does not include its program, pollutant and Title V certification files, so this page does not list the Clean Air Act programs SANTA ROSA WATER - LAGUNA TREATMENT PLANT is under or the pollutants it is permitted for. The programs each evaluation and violation below was recorded under are shown with it. EPA’s free Detailed Facility Report lists both.
Compliance evaluations
- 3Evaluations since January 1, 2017
- 3Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| July 17, 2023 | FCE On-Site | Local | Title V Permits |
| May 20, 2021 | FCE On-Site | Local | Title V Permits |
| July 24, 2019 | FCE On-Site | Local | Title V Permits |
Violations
- 15Violation determinations since January 1, 2017
- 13Of them high-priority
A high-priority violation (HPV) is the most serious class of Clean Air Act non-compliance an agency records; a federally reportable violation (FRV) is the next step down. Each row is one determination as EPA’s violation history files it.
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| March 12, 2026 | HPV day-zero determination | Local | Title V Permits |
| April 16, 2025 | HPV day-zero determination | Local | Title V Permits |
| January 29, 2025 | HPV day-zero determination | Local | Title V Permits |
| January 29, 2025 | HPV day-zero determination | Local | Title V Permits |
| January 29, 2025 | HPV day-zero determination | Local | Title V Permits |
| January 29, 2025 | HPV day-zero determination | Local | Title V Permits |
| April 17, 2023 | HPV day-zero determination | Local | Title V Permits |
| December 21, 2022 | HPV day-zero determination | Local | Title V Permits |
| October 17, 2022 | HPV day-zero determination | Local | Title V Permits |
| October 17, 2022 | HPV day-zero determination | Local | Title V Permits |
| May 25, 2022 | HPV day-zero determination | Local | Title V Permits |
| February 2, 2021 | HPV day-zero determination | Local | Title V Permits |
| November 21, 2019 | HPV day-zero determination | Local | Title V Permits |
| December 4, 2017 | Earliest FRV determination | Local | Title V Permits |
| April 12, 2017 | Earliest FRV determination | Local | Title V Permits |
Enforcement and penalties
11 formal enforcement actions since January 1, 2017, 10 of them with a penalty filed above zero. Each penalty is shown as EPA’s formal action file states it; “Not stated” means the file gives no figure, and $0 is a disclosed zero.
| Date | What EPA recorded | Agency | Penalty, as filed |
|---|---|---|---|
| April 30, 2026 | Administrative Order | Local | $16,000 |
| November 3, 2025 | Administrative Order | Local | $4,000 |
| November 3, 2025 | Administrative Order | Local | $11,000 |
| August 15, 2024 | Administrative Order | Local | $25,000 |
| June 17, 2020 | Administrative Order | Local | $7,000 |
| November 26, 2018 | Administrative Order | Local | $12,000 |
| January 4, 2018 | Administrative Order | Local | $4,000 |
| January 4, 2018 | Administrative Order | Local | $2,000 |
| January 4, 2018 | Administrative Order | Local | $2,000 |
| January 4, 2018 | Administrative Order | Local | $0 |
| January 4, 2018 | Administrative Order | Local | $4,000 |
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| March 12, 2026 | Notice of Violation | Local |
| April 16, 2025 | Notice of Violation | Local |
| January 29, 2025 | Notice of Violation | Local |
| January 29, 2025 | Notice of Violation | Local |
| January 29, 2025 | Notice of Violation | Local |
| January 29, 2025 | Notice of Violation | Local |
| April 17, 2023 | Notice of Violation | Local |
| December 21, 2022 | Notice of Violation | Local |
| October 17, 2022 | Notice of Violation | Local |
| October 17, 2022 | Notice of Violation | Local |
| May 25, 2022 | Notice of Violation | Local |
| February 2, 2021 | Notice of Violation | Local |
| November 21, 2019 | Notice of Violation | Local |
| December 4, 2017 | Notice of Violation | Local |
| April 12, 2017 | Notice of Violation | Local |
Stack tests
- 7Stack tests since January 1, 2017
- 0Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| August 28, 2019 | Pass | Local |
| June 26, 2019 | Pass | Local |
| October 3, 2018 | Pass | Local |
| September 13, 2018 | Pass | Local |
| July 19, 2018 | Pass | Local |
| May 16, 2018 | Pending | Local |
| January 31, 2017 | Pass | Local |
Cited to the EPA ICIS-AIR evaluation, violation, stack test and enforcement files (ECHO download), events dated January 1, 2017 or later as loaded; up to 50 rows of each shown, newest first.
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How we handle your data → Privacy
EPA publishes a free Detailed Facility Report for every source on ECHO: its compliance status quarter by quarter, its evaluations, and its violations, enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter EPA facility registry ID 110000730460 there.
Nearby on the register
- Air-emissions sources in Sonoma County
- Every source record in Sonoma County, A to Z
- Air-emissions sources in California
- Every source record in California, A to Z
Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.