Clean Water Act discharge permit · NPDES MI0055727
HOWELL TWP WWTP, Howell, MI: NPDES MI0055727 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 24Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
HOWELL TWP WWTP, held by Howell Township, holds NPDES permit MI0055727, which discharges to South Branch Shiawassee River. EPA’s file records it issued March 27, 2018 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 | HOWELL TWP WWTP |
|---|---|
| Permittee as filed | Howell Township |
| NPDES ID | MI0055727 |
| 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 | March 27, 2018 |
| Expiration date | October 1, 2021 |
| Issuing agency | State |
| Address | Howell, MI 48843 |
| Receiving water | South Branch Shiawassee River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Handy Howell Drain-Red Cedar River (HUC 040500040401) |
| Program components on file | Biosolids, POTW |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 24Pollutants on file
- 24Under a numeric limit
- 24With a violation of any kind
- 7With 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 |
|---|---|---|---|---|---|
| Phosphorus, total [as P] | 4 | 70 | 21 | June 30, 2022 | 122% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 253 | 19 | February 28, 2025 | 610% over the limit |
| pH | 2 | 59 | 13 | May 31, 2022 | |
| Coliform, fecal general | 2 | 63 | 8 | June 30, 2022 | 565% over the limit |
| Mercury, total [as Hg] | 6 | 17 | 3 | October 31, 2021 | 13% over the limit |
| Solids, total suspended | 8 | 94 | 1 | April 30, 2019 | 5% over the limit |
| Oxygen, dissolved [DO] | 2 | 45 | 1 | August 31, 2021 | 20% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 12 | 288 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 46 | 0 | ||
| Solids, total | 3 | 17 | 0 | ||
| Arsenic, dry weight | 3 | 17 | 0 | ||
| Selenium, dry weight | 3 | 17 | 0 | ||
| Copper, dry weight | 3 | 17 | 0 | ||
| Cadmium, dry weight | 3 | 17 | 0 | ||
| Nitrogen, total Kjeldahl | 3 | 17 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 17 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 17 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 17 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 17 | 0 | ||
| Nitrogen, sludge, total, dry weight [as N] | 3 | 17 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 17 | 0 | ||
| Potassium, sludge, total, dry weight [as K] | 3 | 17 | 0 | ||
| Phosphorus, sludge, total, dry weight [as P] | 3 | 17 | 0 | ||
| Solids, suspended percent removal | 2 | 6 | 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 |
|---|---|---|
| July 21, 2022 | Reporting Violations - Late Submittal of DMRs | ST6 |
| September 21, 2021 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 21, 2021 | Reporting Violations - Late Submittal of DMRs | ST6 |
| October 9, 2020 | Reporting Violations - Failure to Notify | ST6 |
| September 29, 2020 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | ST6 |
| September 29, 2020 | Monitoring Violations - Improper Analysis or Lab Error | 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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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.