Clean Water Act discharge permit · NPDES MIG580328
ANCHOR BAY SCHOOLS-CASCO WWSL, Casco, MI: NPDES MIG580328 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 22Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
ANCHOR BAY SCHOOLS-CASCO WWSL, held by Anchor Bay School District, holds NPDES permit MIG580328. EPA’s file records it issued January 7, 2020 and expiring April 1, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | ANCHOR BAY SCHOOLS-CASCO WWSL |
|---|---|
| Permittee as filed | Anchor Bay School District |
| NPDES ID | MIG580328 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | January 7, 2020 |
| Expiration date | April 1, 2024 |
| Issuing agency | State |
| Address | Casco, MI 48064 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Massac Creek-Frontal Anchor Bay (HUC 040900020104) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 22Pollutants on file
- 22Under a numeric limit
- 22With a violation of any kind
- 0With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 2 | 36 | 0 | ||
| pH | 2 | 36 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 36 | 0 | ||
| Coliform, fecal general | 2 | 36 | 0 | ||
| Solids, total suspended | 4 | 22 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 18 | 0 | ||
| Phosphorus, total [as P] | 2 | 18 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 17 | 0 | ||
| Solids, total | 3 | 3 | 0 | ||
| Arsenic, dry weight | 3 | 3 | 0 | ||
| Selenium, dry weight | 3 | 3 | 0 | ||
| Copper, dry weight | 3 | 3 | 0 | ||
| Cadmium, dry weight | 3 | 3 | 0 | ||
| Nitrogen, total Kjeldahl | 3 | 3 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 3 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 3 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 3 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 3 | 0 | ||
| Nitrogen, sludge, total, dry weight [as N] | 3 | 3 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 3 | 0 | ||
| Potassium, sludge, total, dry weight [as K] | 3 | 3 | 0 | ||
| Phosphorus, sludge, total, dry weight [as P] | 3 | 3 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MIG580328.
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
- 5Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 11, 2025 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| March 11, 2025 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| August 20, 2020 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| August 20, 2020 | Management Practice Violations - Failure to Maintain Records | ST6 |
| May 25, 2017 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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 MIG580328 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.