Clean Water Act discharge permit · NPDES IN0025640
MISHAWAKA WWTP, Mishawaka, IN: NPDES IN0025640 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 31Pollutants under a numeric limit
- 16Pollutants with an effluent exceedance
- 1Inspections on file
- 0Formal enforcement actions
MISHAWAKA WWTP, held by MISHAWAKA MUNICIPAL WWTP, holds NPDES permit IN0025640, which discharges to St Joseph River. EPA’s file records it issued April 21, 2017 and expiring April 30, 2022.
MISHAWAKA WWTP, Mishawaka, Indiana: Individual permit IN0025640, held by MISHAWAKA MUNICIPAL WWTP; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued April 21, 2017, term to April 30, 2022, by IDEM; discharges to ST JOSEPH RIVER; Sewage Treatment Facilities.
- E. coli, MTEC-MF: 0 limits, 21 violations of any kind, 21 effluent exceedances, latest June 30, 1998, largest 1,453% over the limit.
- Mercury, total recoverable: 4 limits, 20 violations of any kind, 19 effluent exceedances, latest October 31, 2023, largest 59% over the limit.
- E. coli, colony forming units [CFU]: 5 limits, 10 violations of any kind, 9 effluent exceedances, latest May 31, 2024, largest 1,687% over the limit.
- Copper, dry weight: 0 limits, 23 violations of any kind, 8 effluent exceedances, latest December 31, 2012, largest 55% over the limit.
- Chlorine, total residual: 4 limits, 7 violations of any kind, 7 effluent exceedances, latest June 30, 2015, largest 350% over the limit.
- Cyanide, total [as CN]: 0 limits, 10 violations of any kind, 4 effluent exceedances, latest January 31, 1999, largest 400% over the limit.
- Phosphorus, total percent removal: 1 limit, 7 violations of any kind, 4 effluent exceedances, latest June 30, 2011, largest 12% over the limit.
- Zinc, sludge, total, dry weight [as Zn]: 0 limits, 17 violations of any kind, 2 effluent exceedances, latest October 31, 2001, largest 19% over the limit.
- NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia: 4 limits, 9 violations of any kind, 2 effluent exceedances, latest November 30, 2012, largest 50% over the limit.
- LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia: 4 limits, 8 violations of any kind, 2 effluent exceedances, latest March 31, 2003, largest 38% over the limit.
- Cadmium, total recoverable: 8 limits, 6 violations of any kind, 2 effluent exceedances, latest March 31, 2001, largest 67% over the limit.
- Copper, total recoverable: 8 limits, 6 violations of any kind, 2 effluent exceedances, latest July 31, 1997, largest 100% over the limit.
- Arsenic, dry weight: 0 limits, 16 violations of any kind, 1 effluent exceedance, latest April 30, 2005, largest 83% over the limit.
- Zinc, total recoverable: 8 limits, 5 violations of any kind, 1 effluent exceedance, latest March 31, 2001, largest 14% over the limit.
- Chromium, hexavalent dissolved [as Cr]: 0 limits, 5 violations of any kind, 1 effluent exceedance, latest September 30, 1998, largest 76% over the limit.
- Toxicity [chronic], Ceriodaphnia dubia: 4 limits, 2 violations of any kind, 1 effluent exceedance, latest November 30, 2012, largest 100% over the limit.
- Selenium, dry weight: 0 limits, 15 violations of any kind, 0 effluent exceedances.
- Cadmium, dry weight: 0 limits, 15 violations of any kind, 0 effluent exceedances.
- Molybdenum, sludge, total, dry weight [as Mo]: 0 limits, 15 violations of any kind, 0 effluent exceedances.
- Lead, sludge, total, dry weight [as Pb]: 0 limits, 15 violations of any kind, 0 effluent exceedances.
- Nickel, sludge, total, dry weight [as Ni]: 0 limits, 15 violations of any kind, 0 effluent exceedances.
- Mercury, sludge, total, dry weight [as Hg]: 0 limits, 15 violations of any kind, 0 effluent exceedances.
- Nitrogen, ammonia total [as N]: 8 limits, 8 violations of any kind, 0 effluent exceedances.
- Solids, total suspended: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- BOD, carbonaceous [5 day, 20 C]: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Pollutant table from 503.13: 0 limits, 5 violations of any kind, 0 effluent exceedances.
- Level of pathogen requirements achieved: 0 limits, 5 violations of any kind, 0 effluent exceedances.
- Description of pathogen option used: 0 limits, 5 violations of any kind, 0 effluent exceedances.
- Vector attraction reduction alternative used: 0 limits, 5 violations of any kind, 0 effluent exceedances.
- Overflow volume [SS0 volume, CSO volume]: 21 limits, 4 violations of any kind, 0 effluent exceedances.
- pH: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 1 limit, 4 violations of any kind, 0 effluent exceedances.
- Cadmium, total [as Cd]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Chromium, total [as Cr]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Copper, total [as Cu]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Zinc, total [as Zn]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Duration: 21 limits, 3 violations of any kind, 0 effluent exceedances.
- Discharge event observation [Visual Monitoring]: 21 limits, 3 violations of any kind, 0 effluent exceedances.
- Precipitation, monthly accumulation: 21 limits, 2 violations of any kind, 0 effluent exceedances.
- LC50 Static Renewal 96Hr Acute Pimephales promelas: 4 limits, 2 violations of any kind, 0 effluent exceedances.
- Noel Statre 7Day Chronic Pimephales: 4 limits, 2 violations of any kind, 0 effluent exceedances.
- Phosphorus, total [as P]: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Toxicity [acute], Ceriodaphnia dubia: 4 limits, 1 violation of any kind, 0 effluent exceedances.
- Toxicity [acute], Pimephales promelas [Fathead Minnow]: 4 limits, 1 violation of any kind, 0 effluent exceedances.
- Toxicity [chronic], Pimephales promelas [Fathead Minnow]: 4 limits, 1 violation of any kind, 0 effluent exceedances.
- Flow, total: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Cyanide, free [amenable to chlorination]: 8 limits, 0 violations of any kind, 0 effluent exceedances.
- Nickel, total recoverable: 8 limits, 0 violations of any kind, 0 effluent exceedances.
- Lead, total recoverable: 8 limits, 0 violations of any kind, 0 effluent exceedances.
- Chromium, total recoverable: 8 limits, 0 violations of any kind, 0 effluent exceedances.
- Number of Events: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- March 11, 2026: Evaluation (S).
Indiana holds 541 Publicly owned treatment works coverages of this permit type in EPA’s file; 77 were issued before IN0025640. MISHAWAKA MUNICIPAL WWTP holds 2 permits in Indiana.
Other permits held by MISHAWAKA MUNICIPAL WWTP
- MISHAWAKA MUNICIPAL WWTP, Mishawaka: INL025640, issued January 1, 2021
Coverages issued nearest IN0025640
- March 29, 2017: ELKHART WWTP, Elkhart, IN0025674
- March 29, 2017: IAW - SHERIDAN WWTP, Sheridan, IN0031071
- March 29, 2017: PARAGON WWTP, Paragon, IN0040479
- April 21, 2017: HAMMOND WASTEWATER FACILITY, Hammond, IN0023060, held by HAMMOND SANITARY DISTRICT WWTP
- April 21, 2017: NEW ALBANY WWTP, New Albany, IN0023884
- April 21, 2017: CORYDON #2 SATELLITE, Corydon, IN0062863
- April 28, 2017: LADOGA MUNICIPAL WWTP, Ladoga, IN0023418
- April 28, 2017: BROOKLYN WWTP, Brooklyn, IN0039772, held by BROOKLYN WWTP, TOWN OF
- April 28, 2017: WESTVILLE CORRECTIONAL FACILITY WWTP, Westville, IN0042978, held by WESTVILLE CORRECTIONAL FACILITY
- April 28, 2017: AMO-COATESVILLE CONSERVANCY DISTRICT WWTP, Coatesville, IN0043877, held by AMO-COATESVILLE CD WWTP
MISHAWAKA WWTP among its neighbors
EPA’s permit file holds 22 discharge permits in the Eller Ditch-Saint Joseph River subwatershed (HUC 040500012203), IN0025640 among them. Its county holds 73, 3 of them major permits; IN0025640 is a major permit.
Other permits in the Eller Ditch-Saint Joseph River subwatershed (HUC 040500012203)
- BECHTEL PLANT MACHINERY INC - MISHAWAKA TEST LOOP, Mishawaka: IN0064564, minor permit, discharging to ST. JOSEPH R, permit term to October 31, 2022
- BECHTEL PLANT MACHINERY INCORPORATED MISHAWAKA TEST LOOP, Mishawaka: ING250074, minor permit, discharging to ST. JOSEPH RIVER, permit term to June 30, 2013
- BODINE STATE FISH HATCHERY, Mishawaka: IN0049875, minor permit, discharging to ST JOSEPH R ABOVE TWIN BRANCH DAM, permit term to April 30, 2025
- CAMPBELL MINI-STORAGE FACILITY, Mishawaka: INRA17363, minor permit, permit term to December 28, 2030
- CEDAR ROAD SELF-STORAGE FACILITY, Mishawaka: INRA09761, minor permit, permit term to May 22, 2027
- CSO 020 SEWER SEPARATION AND TWIN BRANCH TRAFFIC IMPROVEMENTS PROJECT, Mishawaka: INRA13651, minor permit, permit term to April 9, 2029
- DUNKIN DONUTS, Mishawaka: INRA09473, minor permit, permit term to April 7, 2027
- FERN HUNSBERGER PARK, Osceola: INRA16511, minor permit, permit term to July 27, 2030
- HUMS ELEMENTARY, Mishawaka: INRA16729, minor permit, permit term to August 28, 2030
- JW CONCRETE, Osceola: INRA13673, minor permit, permit term to April 15, 2029
Identity
| Facility as filed | MISHAWAKA WWTP |
|---|---|
| Permittee as filed | MISHAWAKA MUNICIPAL WWTP |
| NPDES ID | IN0025640 |
| 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 | April 21, 2017 |
| Expiration date | April 30, 2022 |
| Issuing agency | IDEM |
| Address | Mishawaka, IN 46544 |
| Receiving water | ST JOSEPH RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Eller Ditch-Saint Joseph River (HUC 040500012203) |
| Program components on file | Biosolids, CSO, POTW, Pretreatment |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 51Pollutants on file
- 31Under a numeric limit
- 46With a violation of any kind
- 16With 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 |
|---|---|---|---|---|---|
| E. coli, MTEC-MF | 0 | 21 | 21 | June 30, 1998 | 1,453% over the limit |
| Mercury, total recoverable | 4 | 20 | 19 | October 31, 2023 | 59% over the limit |
| E. coli, colony forming units [CFU] | 5 | 10 | 9 | May 31, 2024 | 1,687% over the limit |
| Copper, dry weight | 0 | 23 | 8 | December 31, 2012 | 55% over the limit |
| Chlorine, total residual | 4 | 7 | 7 | June 30, 2015 | 350% over the limit |
| Cyanide, total [as CN] | 0 | 10 | 4 | January 31, 1999 | 400% over the limit |
| Phosphorus, total percent removal | 1 | 7 | 4 | June 30, 2011 | 12% over the limit |
| Zinc, sludge, total, dry weight [as Zn] | 0 | 17 | 2 | October 31, 2001 | 19% over the limit |
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | 4 | 9 | 2 | November 30, 2012 | 50% over the limit |
| LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia | 4 | 8 | 2 | March 31, 2003 | 38% over the limit |
| Cadmium, total recoverable | 8 | 6 | 2 | March 31, 2001 | 67% over the limit |
| Copper, total recoverable | 8 | 6 | 2 | July 31, 1997 | 100% over the limit |
| Arsenic, dry weight | 0 | 16 | 1 | April 30, 2005 | 83% over the limit |
| Zinc, total recoverable | 8 | 5 | 1 | March 31, 2001 | 14% over the limit |
| Chromium, hexavalent dissolved [as Cr] | 0 | 5 | 1 | September 30, 1998 | 76% over the limit |
| Toxicity [chronic], Ceriodaphnia dubia | 4 | 2 | 1 | November 30, 2012 | 100% over the limit |
| Selenium, dry weight | 0 | 15 | 0 | ||
| Cadmium, dry weight | 0 | 15 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 0 | 15 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 0 | 15 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 0 | 15 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 0 | 15 | 0 | ||
| Nitrogen, ammonia total [as N] | 8 | 8 | 0 | ||
| Solids, total suspended | 4 | 8 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 4 | 8 | 0 | ||
| Pollutant table from 503.13 | 0 | 5 | 0 | ||
| Level of pathogen requirements achieved | 0 | 5 | 0 | ||
| Description of pathogen option used | 0 | 5 | 0 | ||
| Vector attraction reduction alternative used | 0 | 5 | 0 | ||
| Overflow volume [SS0 volume, CSO volume] | 21 | 4 | 0 | ||
| pH | 2 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 1 | 4 | 0 | ||
| Cadmium, total [as Cd] | 0 | 4 | 0 | ||
| Chromium, total [as Cr] | 0 | 4 | 0 | ||
| Copper, total [as Cu] | 0 | 4 | 0 | ||
| Zinc, total [as Zn] | 0 | 4 | 0 | ||
| Duration | 21 | 3 | 0 | ||
| Discharge event observation [Visual Monitoring] | 21 | 3 | 0 | ||
| Precipitation, monthly accumulation | 21 | 2 | 0 | ||
| LC50 Static Renewal 96Hr Acute Pimephales promelas | 4 | 2 | 0 | ||
| Noel Statre 7Day Chronic Pimephales | 4 | 2 | 0 | ||
| Phosphorus, total [as P] | 1 | 2 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 4 | 1 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 4 | 1 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 4 | 1 | 0 | ||
| Flow, total | 1 | 1 | 0 | ||
| Cyanide, free [amenable to chlorination] | 8 | 0 | 0 | ||
| Nickel, total recoverable | 8 | 0 | 0 | ||
| Lead, total recoverable | 8 | 0 | 0 | ||
| Chromium, total recoverable | 8 | 0 | 0 | ||
| Number of Events | 2 | 0 | 0 |
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES IN0025640.
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| March 11, 2026 | Evaluation | S |
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES IN0025640.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.