Clean Water Act discharge permit · NPDES MI0056979
OTTER LAKE WWTP, Otter Lake, MI: NPDES MI0056979 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 24Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
OTTER LAKE WWTP, held by Village of Otter Lake, holds NPDES permit MI0056979. EPA’s file records it issued February 28, 2019 and expiring October 1, 2022. 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 | OTTER LAKE WWTP |
|---|---|
| Permittee as filed | Village of Otter Lake |
| NPDES ID | MI0056979 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | February 28, 2019 |
| Expiration date | October 1, 2022 |
| Issuing agency | State |
| Address | Otter Lake, MI 48464 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Butternut Creek (HUC 040802040407) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 26Pollutants on file
- 24Under a numeric limit
- 26With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| Coliform, fecal general | 2 | 41 | 19 | March 31, 2026 | 1,542% over the limit |
| Phosphorus, total [as P] | 4 | 39 | 17 | August 31, 2025 | 85% over the limit |
| Oxygen, dissolved [DO] | 2 | 56 | 11 | May 31, 2025 | 50% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 12 | 153 | 10 | May 31, 2022 | 242% over the limit |
| Solids, total suspended | 8 | 43 | 2 | April 30, 2008 | 112% over the limit |
| Nitrogen, ammonia total [as N] | 16 | 92 | 0 | ||
| pH | 2 | 22 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 22 | 0 | ||
| Solids, suspended percent removal | 2 | 6 | 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 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 2 | 3 | 0 | ||
| Chloride [as Cl] | 0 | 1 | 0 | ||
| Sulfate, total [as SO4] | 0 | 1 | 0 |
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
- 7Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 10, 2024 | Reporting Violations - Failure to Notify | ST6 |
| December 10, 2024 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| December 10, 2024 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | ST6 |
| December 21, 2021 | Reporting Violations - Late Submittal of DMRs | ST6 |
| November 21, 2019 | Reporting Violations - Late Submittal of DMRs | ST6 |
| June 21, 2019 | Reporting Violations - Late Submittal of DMRs | ST6 |
| May 21, 2019 | Reporting Violations - Late Submittal of DMRs | 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 MI0056979 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.