Clean Water Act discharge permit · NPDES MIG580410
DENMARK TWP WWSL, Richville, MI: NPDES MIG580410 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 23Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
DENMARK TWP WWSL, held by Tuscola County Board of Public Works, holds NPDES permit MIG580410. EPA’s file records it issued March 18, 2015 and expiring April 1, 2019.
DENMARK TWP WWSL, Richville, Michigan: Coverage under a general permit MIG580410, held by Tuscola County Board of Public Works; Administratively continued (past its expiration date and still in force until reissued); issued March 18, 2015, term to April 1, 2019, by State; Sewage Treatment Facilities.
- Solids, total suspended: 4 limits, 52 violations of any kind, 14 effluent exceedances, latest November 30, 2025, largest 130% over the limit.
- BOD, 5-day, 20 deg. C: 2 limits, 67 violations of any kind, 13 effluent exceedances, latest November 30, 2025, largest 177% over the limit.
- Coliform, fecal general: 2 limits, 61 violations of any kind, 7 effluent exceedances, latest May 31, 2017, largest 99,999% over the limit.
- pH: 2 limits, 54 violations of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 2 limits, 54 violations of any kind, 0 effluent exceedances.
- Phosphorus, total [as P]: 1 limit, 47 violations of any kind, 0 effluent exceedances.
- Nitrogen, ammonia total [as N]: 2 limits, 43 violations of any kind, 0 effluent exceedances.
- Phosphorus, Total: 2 limits, 32 violations of any kind, 0 effluent exceedances.
- Oxygen, dissolved [DO]: 1 limit, 27 violations of any kind, 0 effluent exceedances.
- Solids, total: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Arsenic, dry weight: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Selenium, dry weight: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Copper, dry weight: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Cadmium, dry weight: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Nitrogen, total Kjeldahl: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Molybdenum, sludge, total, dry weight [as Mo]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Zinc, sludge, total, dry weight [as Zn]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Lead, sludge, total, dry weight [as Pb]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Nickel, sludge, total, dry weight [as Ni]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Nitrogen, sludge, total, dry weight [as N]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Mercury, sludge, total, dry weight [as Hg]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Potassium, sludge, total, dry weight [as K]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Phosphorus, sludge, total, dry weight [as P]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- April 26, 2023: Management Practice Violations - Improper Operation and Maintenance (ST6).
- October 31, 2020: Reporting Violations - Late Submittal of DMRs (ST6).
- April 21, 2020: Reporting Violations - Late Submittal of DMRs (ST6).
- September 27, 2018: Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements (ST6).
- March 21, 2018: Reporting Violations - Late Submittal of DMRs (ST6).
- October 21, 2017: Reporting Violations - Late Submittal of DMRs (ST6).
- September 21, 2017: Reporting Violations - Late Submittal of DMRs (ST6).
- August 21, 2017: Reporting Violations - Late Submittal of DMRs (ST6).
- May 21, 2017: Reporting Violations - Late Submittal of DMRs (ST6).
- April 21, 2017: Reporting Violations - Late Submittal of DMRs (ST6).
- March 21, 2017: Reporting Violations - Late Submittal of DMRs (ST6).
- February 21, 2017: Reporting Violations - Late Submittal of DMRs (ST6).
- January 21, 2017: Reporting Violations - Late Submittal of DMRs (ST6).
DENMARK TWP WWSL among its neighbors
EPA’s permit file holds 4 discharge permits in the Rousch Drain-Cheboyganing Creek subwatershed (HUC 040802060101), MIG580410 among them. Its county holds 13, 1 of them major permits; MIG580410 is a minor permit.
Other permits in the Rousch Drain-Cheboyganing Creek subwatershed (HUC 040802060101)
- ADVANCED MICRONUTRIENT PRODUCTS, Reese: MIS111693, minor permit, discharging to Cheboyganing Creek, permit term to April 1, 2021
- DAVE HAUSBECK TRUCKING-REESE, Reese: MIS111653, minor permit, discharging to Cheboyganing Creek, permit term to April 1, 2021
- STAR OF THE WEST, Richville: MIS111917, minor permit, discharging to Cheboyganing Creek, permit term to April 1, 2021
Identity
| Facility as filed | DENMARK TWP WWSL |
|---|---|
| Permittee as filed | Tuscola County Board of Public Works |
| NPDES ID | MIG580410 |
| 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 | March 18, 2015 |
| Expiration date | April 1, 2019 |
| Issuing agency | State |
| Address | Richville, MI 48758 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Rousch Drain-Cheboyganing Creek (HUC 040802060101) |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 23Pollutants on file
- 23Under a numeric limit
- 23With a violation of any kind
- 3With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 4 | 52 | 14 | November 30, 2025 | 130% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 67 | 13 | November 30, 2025 | 177% over the limit |
| Coliform, fecal general | 2 | 61 | 7 | May 31, 2017 | 99,999% over the limit |
| pH | 2 | 54 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 54 | 0 | ||
| Phosphorus, total [as P] | 1 | 47 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 43 | 0 | ||
| Phosphorus, Total | 2 | 32 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 27 | 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 |
Inspections, violations and enforcement
- 13Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 26, 2023 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| October 31, 2020 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 21, 2020 | Reporting Violations - Late Submittal of DMRs | ST6 |
| September 27, 2018 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | ST6 |
| March 21, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
| October 21, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
| September 21, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
| August 21, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
| May 21, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 21, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
| March 21, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
| February 21, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
| January 21, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
Inspections
EPA’s inspection file holds no inspection for NPDES MIG580410.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES MIG580410.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.