Clean Water Act discharge permit · NPDES MI0020800
GRAND LEDGE WWTP, Grand Ledge, MI: NPDES MI0020800 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 28Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
GRAND LEDGE WWTP, held by City of Grand Ledge, holds NPDES permit MI0020800, which discharges to Grand River. EPA’s file records it issued May 31, 2023 and expiring October 1, 2027. 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 | GRAND LEDGE WWTP |
|---|---|
| Permittee as filed | City of Grand Ledge |
| NPDES ID | MI0020800 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | May 31, 2023 |
| Expiration date | October 1, 2027 |
| Issuing agency | State |
| Address | Grand Ledge, MI 48837 |
| Receiving water | Grand River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Frayer Creek-Grand River (HUC 040500040706) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 32Pollutants on file
- 28Under a numeric limit
- 30With a violation of any kind
- 8With 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 | 95 | 11 | April 30, 2017 | 1,309% over the limit |
| Phosphorus, total [as P] | 4 | 53 | 9 | June 30, 2020 | 975% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 89 | 5 | April 30, 2017 | 159% over the limit |
| Coliform, fecal general | 2 | 45 | 5 | August 31, 2017 | 497% over the limit |
| Solids, suspended percent removal | 2 | 24 | 5 | April 30, 2009 | 473% over the limit |
| Chlorine, total residual | 1 | 30 | 3 | June 30, 2025 | 99,999% over the limit |
| BOD, carb-5 day, 20 deg C, percent removal | 2 | 22 | 2 | January 31, 2005 | 280% over the limit |
| Copper, total [as Cu] | 0 | 45 | 1 | April 30, 2004 | 24% over the limit |
| Mercury, total [as Hg] | 6 | 83 | 0 | ||
| pH | 2 | 44 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 44 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 23 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 22 | 0 | ||
| Dock discharge of phosphorus | 0 | 22 | 0 | ||
| Selenium, total [as Se] | 0 | 10 | 0 | ||
| Selenium, dry weight | 3 | 9 | 0 | ||
| Cadmium, dry weight | 3 | 9 | 0 | ||
| Cyanide [A] | 0 | 9 | 0 | ||
| Solids, total | 3 | 8 | 0 | ||
| Nitrogen, total Kjeldahl | 3 | 8 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 8 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 8 | 0 | ||
| Phosphorus, sludge, total, dry weight [as P] | 3 | 8 | 0 | ||
| Arsenic, dry weight | 3 | 7 | 0 | ||
| Copper, dry weight | 3 | 7 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 7 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 7 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 7 | 0 | ||
| Nitrogen, sludge, total, dry weight [as N] | 3 | 7 | 0 | ||
| Potassium, sludge, total, dry weight [as K] | 3 | 7 | 0 | ||
| Chloride [as Cl] | 1 | 0 | 0 | ||
| Sulfate, total [as SO4] | 1 | 0 | 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
- 20Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| November 19, 2025 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| February 21, 2025 | Reporting Violations - Late Submittal of DMRs | ST6 |
| January 21, 2025 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| January 26, 2024 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| July 13, 2023 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| April 5, 2023 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| April 4, 2023 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| April 1, 2023 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| February 17, 2022 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| August 12, 2021 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| October 31, 2020 | Reporting Violations - Late Submittal of DMRs | ST6 |
| May 18, 2020 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| January 11, 2020 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| November 9, 2018 | Monitoring Violations - Frequency of Sampling Violation | 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 |
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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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.