Clean Water Act discharge permit · NPDES MI0020184
HOLLY WWTP, Holly, MI: NPDES MI0020184 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 30Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
HOLLY WWTP, held by Village of Holly, holds NPDES permit MI0020184, which discharges to Shiawassee River. EPA’s file records it issued December 31, 2017 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 | HOLLY WWTP |
|---|---|
| Permittee as filed | Village of Holly |
| NPDES ID | MI0020184 |
| 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 | December 31, 2017 |
| Expiration date | October 1, 2021 |
| Issuing agency | State |
| Address | Holly, MI 48442 |
| Receiving water | Shiawassee River |
| Subwatershed | Patterson Hooy Drain-Shiawasee River (HUC 040802030107) |
| Program components on file | Biosolids, POTW |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | ICIS-AIR source MI00000000000B6210 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 30Pollutants on file
- 30Under a numeric limit
- 30With 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 |
|---|---|---|---|---|---|
| Mercury, total [as Hg] | 6 | 56 | 2 | July 31, 2020 | 15% over the limit |
| Phosphorus, total [as P] | 4 | 52 | 2 | April 30, 2026 | 280% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 12 | 156 | 1 | May 31, 2014 | 2% over the limit |
| Nitrogen, ammonia total [as N] | 6 | 154 | 0 | ||
| Coliform, fecal general | 2 | 88 | 0 | ||
| Solids, total suspended | 8 | 87 | 0 | ||
| pH | 2 | 60 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 60 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 46 | 0 | ||
| Chlorine, total residual | 1 | 40 | 0 | ||
| Toxicity, choice of species | 1 | 17 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 1 | 17 | 0 | ||
| TU Static 24 Hr Acute Pimephales promelas | 1 | 17 | 0 | ||
| Static 48 Hr Chronic Pimphales Promelas | 1 | 17 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 2 | 10 | 0 | ||
| Solids, suspended percent removal | 2 | 10 | 0 | ||
| Solids, total | 3 | 9 | 0 | ||
| Arsenic, dry weight | 3 | 9 | 0 | ||
| Selenium, dry weight | 3 | 9 | 0 | ||
| Copper, dry weight | 3 | 9 | 0 | ||
| Cadmium, dry weight | 3 | 9 | 0 | ||
| Nitrogen, total Kjeldahl | 3 | 9 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 9 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 9 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 9 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 9 | 0 | ||
| Nitrogen, sludge, total, dry weight [as N] | 3 | 9 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 9 | 0 | ||
| Potassium, sludge, total, dry weight [as K] | 3 | 9 | 0 | ||
| Phosphorus, sludge, total, dry weight [as P] | 3 | 9 | 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
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 12, 2025 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| August 15, 2024 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| August 15, 2024 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| September 21, 2020 | Pretreatment - Failure to Develop/Enforce Standards | ST6 |
| September 21, 2020 | Failure to enforce standards, local limits, and reporting requirements (>15% SNC SIU) (Level II) | ST6 |
| May 22, 2020 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | 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 October 14, 2026.