Clean Water Act discharge permit · NPDES IN0021491
DUNKIRK WWTP, Millgrove, IN: NPDES IN0021491 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 27Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
DUNKIRK WWTP holds NPDES permit IN0021491, which discharges to Mississinewa R/Big Lick/Dunkirk Dr.. EPA’s file records it issued July 20, 2018 and expiring December 31, 2023. 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 | DUNKIRK WWTP |
|---|---|
| Permittee as filed | DUNKIRK WWTP |
| NPDES ID | IN0021491 |
| 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 | July 20, 2018 |
| Expiration date | December 31, 2023 |
| Issuing agency | IDEM |
| Address | Millgrove, IN 47336 |
| Receiving water | MISSISSINEWA R/BIG LICK/DUNKIRK DR. |
| Subwatershed | Cowboy Run-Brooks Creek (HUC 051201020106) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 27Pollutants on file
- 27Under a numeric limit
- 14With a violation of any kind
- 9With 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 | 117 | 105 | February 28, 2026 | 886% over the limit |
| Chloride [as Cl] | 4 | 54 | 52 | July 31, 2026 | 108% over the limit |
| Solids, total suspended | 8 | 49 | 34 | May 31, 2026 | 200% over the limit |
| Chlorine, total residual | 4 | 34 | 28 | June 30, 2015 | 1,733% over the limit |
| Phosphorus, total [as P] | 2 | 11 | 11 | July 31, 2026 | 30% over the limit |
| E. coli, colony forming units [CFU] | 3 | 8 | 6 | May 31, 2005 | 330% over the limit |
| pH | 2 | 12 | 2 | February 28, 2017 | |
| Oxygen, dissolved [DO] | 1 | 8 | 2 | September 30, 1999 | 7% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 8 | 16 | 1 | May 31, 2004 | 15% over the limit |
| Flow, in conduit or thru treatment plant | 1 | 9 | 0 | ||
| Number of Events | 2 | 4 | 0 | ||
| Hardness, total [as CaCO3] | 1 | 2 | 0 | ||
| Sulfate, total [as SO4] | 1 | 2 | 0 | ||
| Flow, total | 1 | 1 | 0 | ||
| Copper, total recoverable | 4 | 0 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 2 | 0 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 2 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 2 | 0 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 2 | 0 | 0 | ||
| Oil and grease, hexane extr method | 1 | 0 | 0 | ||
| Copper, dry weight | 1 | 0 | 0 | ||
| Cadmium, dry weight | 1 | 0 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 1 | 0 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 1 | 0 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 1 | 0 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 1 | 0 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES IN0021491.
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.
Watch this permit
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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 IN0021491 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.