Clean Water Act discharge permit · NPDES MI0059519
SOUTH LYON MS4-OAKLAND, South Lyon, MI: NPDES MI0059519 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
SOUTH LYON MS4-OAKLAND, held by City of South Lyon, holds NPDES permit MI0059519. EPA’s file records it issued April 27, 2016 and expiring October 1, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SOUTH LYON MS4-OAKLAND |
|---|---|
| Permittee as filed | City of South Lyon |
| NPDES ID | MI0059519 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | April 27, 2016 |
| Expiration date | October 1, 2021 |
| Issuing agency | State |
| Address | South Lyon, MI 48178 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Inchwagh Lake (HUC 040900050109) |
| NAICS | 924110 – Administration of Air and Water Resource and Solid Waste Management Programs |
| SIC | 9511 – Air, Water, & Solid Waste Management |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES MI0059519.
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 15, 2026 | Failure to comply with a requirement regarding Pollution Prevention / Good Housekeeping | ST6 |
| April 15, 2026 | Failure to comply with a requirement regarding Public Participation / Involvement | ST6 |
| November 3, 2021 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| November 3, 2021 | Failure to comply with a requirement regarding Illicit Discharge Detection and Elimination | ST6 |
| November 3, 2021 | Failure to comply with a requirement regarding Post-Construction Runoff Control | ST6 |
| November 3, 2021 | Failure to comply with a requirement regarding Pollution Prevention / Good Housekeeping | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MI0059519 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.