Clean Water Act discharge permit · NPDES MI0023680
NEW BALTIMORE WWTP, New Baltimore, MI: NPDES MI0023680 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 25Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
NEW BALTIMORE WWTP, held by City of New Baltimore, holds NPDES permit MI0023680, which discharges to Crapaud Creek. EPA’s file records it issued May 29, 2020 and expiring October 1, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | NEW BALTIMORE WWTP |
|---|---|
| Permittee as filed | City of New Baltimore |
| NPDES ID | MI0023680 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | May 29, 2020 |
| Expiration date | October 1, 2024 |
| Issuing agency | State |
| Address | New Baltimore, MI 48047 |
| Receiving water | Crapaud Creek |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Massac Creek-Frontal Anchor Bay (HUC 040900020104) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 27Pollutants on file
- 25Under a numeric limit
- 11With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 8 | 29 | 23 | June 30, 2018 | 440% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 8 | 21 | 9 | March 31, 2014 | 103% over the limit |
| Oxygen, dissolved [DO] | 2 | 11 | 6 | September 30, 2010 | 47% over the limit |
| Solids, total suspended | 8 | 24 | 4 | April 30, 2010 | 273% over the limit |
| Coliform, fecal general | 2 | 13 | 4 | January 31, 2014 | 1,400% over the limit |
| Phosphorus, total [as P] | 6 | 17 | 3 | February 28, 2014 | 720% over the limit |
| pH | 2 | 12 | 0 | ||
| Mercury, total [as Hg] | 6 | 10 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 10 | 0 | ||
| Copper, total [as Cu] | 0 | 6 | 0 | ||
| Chlorine, total residual | 0 | 6 | 0 | ||
| Selenium, total [as Se] | 4 | 0 | 0 | ||
| Cyanide [A] | 4 | 0 | 0 | ||
| Solids, total | 3 | 0 | 0 | ||
| Arsenic, dry weight | 3 | 0 | 0 | ||
| Selenium, dry weight | 3 | 0 | 0 | ||
| Copper, dry weight | 3 | 0 | 0 | ||
| Cadmium, dry weight | 3 | 0 | 0 | ||
| Nitrogen, total Kjeldahl | 3 | 0 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 0 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 0 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 0 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 0 | 0 | ||
| Nitrogen, sludge, total, dry weight [as N] | 3 | 0 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 0 | 0 | ||
| Potassium, sludge, total, dry weight [as K] | 3 | 0 | 0 | ||
| Phosphorus, sludge, total, dry weight [as P] | 3 | 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
- 7Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 7, 2025 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| April 7, 2025 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| September 30, 2024 | Monitoring Violations - Analysis not Conducted | ST6 |
| December 1, 2022 | Pretreatment - Failure to Develop/Enforce Standards | ST6 |
| December 1, 2022 | Failure to enforce standards, local limits, and reporting requirements (>15% SNC SIU) (Level II) | ST6 |
| August 17, 2021 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| October 12, 2020 | Effluent Violations - Narrative Effluent Violation | 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 MI0023680 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.