Data / Environmental compliance / California / Southern Marin WWTP
Southern Marin WWTP, Mill Valley, CA: $25,500 in penalties
Updated November 7, 2026. Source: US EPA, Enforcement and Compliance History Online (ECHO).
EPA's ECHO database records 2 inspections and 2 formal enforcement actions at Southern Marin WWTP, 450 Sycamore Avenue, Mill Valley, CA 94941, in the five years to November 1, 2026. Penalties total $25,500, the latest $16,500 on March 25, 2024. The facility had violations in 7 of the last 12 quarters.
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- Site
- 450 Sycamore Avenue, Mill Valley, CA 94941
- EPA registry ID (FRS)
- 110002418848
- County
- Marin
- Programs
- Clean Water Act
- Compliance status
- Violation Identified
- Inspections
- 2, latest May 8, 2024
- Formal actions
- 2, latest March 25, 2024
- Informal actions
- None in five years; latest on record January 16, 2007
- Penalties
- $25,500 in 2 penalties
- ECHO facility report
- echo.epa.gov
By program
Inspections, enforcement actions and penalties of the last five years in each EPA program that covers the facility, as the program systems record them. Federal case penalties are listed under federal enforcement cases. Quarters count the last 12.
| Program | Inspections | Informal actions | Formal actions | Penalties | Latest penalty | Latest amount | Quarters with violations | Quarters in significant noncompliance | Status |
|---|---|---|---|---|---|---|---|---|---|
| Clean Water Act | 2 | 0 | 2 | $25,500 | March 25, 2024 | $16,500 | 8 | 0 | Violation Identified |
Federal enforcement cases
EPA cases that name this facility, newest first. The penalty is the whole case penalty, shared with the other facilities named in the case.
| Case | Case name | Status date | Type | Status | Outcome | Statutes | Case penalty | Facilities in case | Source |
|---|---|---|---|---|---|---|---|---|---|
| 09-2008-1506 | Sewerage Agency of Southern Marin SASM Administrative Order | November 25, 2024 | Administrative, Formal | Closed | Final Order No Penalty | Clean Water Act | $0 | 7 | echo.epa.gov |
Also on SpecStream
Public domain (U.S. government work). Counts and penalties cover the five years to November 1, 2026 as ECHO publishes them in its exporter and case downloads, drawn from EPA's air, water, hazardous waste and drinking water systems and from the states that report to them. Records can be incomplete, late or corrected after this page was read. A federal case penalty that names several facilities is shown on each of them and counted once in industry, state and national totals. Each row links to EPA's own report. A quarter in significant noncompliance is EPA's term for a serious violation status in a program, not a finding of fault beyond that status. This page uses US EPA data and is not endorsed or certified by the US EPA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.