Clean Water Act discharge permit · NPDES IN0020451
NORTH VERNON WWTP, North Vernon, IN: NPDES IN0020451 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 26Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
- 3Inspections on file
- 0Formal enforcement actions
NORTH VERNON WWTP holds NPDES permit IN0020451, which discharges to Muscatatuck R (Vernon Fk). EPA’s file records it issued December 26, 2019 and expiring January 31, 2025.
NORTH VERNON WWTP, North Vernon, Indiana: Individual permit IN0020451; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued December 26, 2019, term to January 31, 2025, by IDEM; discharges to MUSCATATUCK R (VERNON FK).
- E. coli, colony forming units [CFU]: 6 limits, 49 violations of any kind, 43 effluent exceedances, latest June 30, 2026, largest 99,999% over the limit.
- Chlorine, total residual: 4 limits, 17 violations of any kind, 13 effluent exceedances, latest May 31, 2026, largest 1,567% over the limit.
- Copper, total recoverable: 4 limits, 16 violations of any kind, 10 effluent exceedances, latest October 31, 2024, largest 100% over the limit.
- Nitrogen, ammonia total [as N]: 8 limits, 19 violations of any kind, 8 effluent exceedances, latest November 30, 2014, largest 218% over the limit.
- Oxygen, dissolved [DO]: 2 limits, 15 violations of any kind, 6 effluent exceedances, latest June 30, 2024, largest 90% over the limit.
- E. coli, MTEC-MF: 0 limits, 6 violations of any kind, 6 effluent exceedances, latest May 31, 2001, largest 171% over the limit.
- pH: 4 limits, 9 violations of any kind, 3 effluent exceedances, latest May 31, 2014.
- Solids, total suspended: 6 limits, 16 violations of any kind, 1 effluent exceedance, latest November 30, 2022, largest 22% over the limit.
- BOD, carbonaceous [5 day, 20 C]: 6 limits, 16 violations of any kind, 0 effluent exceedances.
- Nickel, total recoverable: 4 limits, 12 violations of any kind, 0 effluent exceedances.
- Zinc, total recoverable: 4 limits, 10 violations of any kind, 0 effluent exceedances.
- Lead, total recoverable: 4 limits, 10 violations of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 3 limits, 10 violations of any kind, 0 effluent exceedances.
- Cyanide, free [as free]: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Cyanide, total [as CN]: 0 limits, 8 violations of any kind, 0 effluent exceedances.
- Nitrogen, total [as N]: 2 limits, 7 violations of any kind, 0 effluent exceedances.
- Precipitation, monthly accumulation: 1 limit, 4 violations of any kind, 0 effluent exceedances.
- Phosphorus, total [as P]: 4 limits, 3 violations of any kind, 0 effluent exceedances.
- LC50 Static Renewal 96Hr Acute Pimephales promelas: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Noel Statre 7Day Chronic Pimephales: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Cyanide, free [amenable to chlorination]: 4 limits, 2 violations of any kind, 0 effluent exceedances.
- Toxicity [acute], Ceriodaphnia dubia: 3 limits, 2 violations of any kind, 0 effluent exceedances.
- Toxicity [chronic], Ceriodaphnia dubia: 3 limits, 2 violations of any kind, 0 effluent exceedances.
- Toxicity [acute], Pimephales promelas [Fathead Minnow]: 3 limits, 2 violations of any kind, 0 effluent exceedances.
- Toxicity [chronic], Pimephales promelas [Fathead Minnow]: 3 limits, 2 violations of any kind, 0 effluent exceedances.
- Flow, total: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Duration: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Overflow volume [SS0 volume, CSO volume]: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Flow, wastewater by-passing trtmnt plant: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Number of Events: 4 limits, 1 violation of any kind, 0 effluent exceedances.
- Discharge event observation [Visual Monitoring]: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- August 5, 2026: Audit (S).
- March 5, 2026: Monitoring Violations - Frequency of Sampling Violation (ST6).
- March 5, 2026: Reporting Violations - Improper/ Incorrect Reporting (ST6).
- March 5, 2026: Effluent Violations - Numeric effluent violation (ST6).
- March 5, 2026: Evaluation (S).
- March 5, 2026: Evaluation (S).
- March 5, 2026: Notice of Noncompliance Issued (State).
Indiana holds 541 Publicly owned treatment works coverages of this permit type in EPA’s file; 355 were issued before IN0020451. NORTH VERNON WWTP holds 2 permits in Indiana.
Other permits held by NORTH VERNON WWTP
- NORTH VERNON WWTP, North Vernon: INL020451, issued January 1, 2021
Coverages issued nearest IN0020451
- November 7, 2019: PARKER CITY WWTP, Parker, IN0020729
- November 7, 2019: HAUBSTADT WWTP, Haubstadt, IN0021482
- November 7, 2019: HAMILTON LAKE CONSERVANCY DISTRICT, Hamilton, IN0050822
- December 4, 2019: KENTLAND WWTP, Kentland, IN0023329, held by KENTLAND WWTP, TOWN OF
- December 4, 2019: CENTER POINT WWTP, Center Point, IN0039292, held by CENTER POINT WWTP, TOWN OF
- December 26, 2019: VAN BUREN WWTP, Van Buren, IN0020559
- December 26, 2019: MARKLE WWTP, Markle, IN0023736
- December 26, 2019: MICHIGAN CITY - J. B. GIFFORD WWTP, Michigan City, IN0023752, held by MICHIGAN CITY - J.B. GIFFORD WWTP
- December 26, 2019: OTTERBEIN WWTP, Otterbein, IN0023990
- December 26, 2019: COLUMBUS WWTP, CITY OF, Columbus, IN0032573
NORTH VERNON WWTP among its neighbors
EPA’s permit file holds 18 discharge permits in the Long Branch-Vernon Fork Muscatatuck River subwatershed (HUC 051202070404), IN0020451 among them. Its county holds 25, 1 of them major permits; IN0020451 is a major permit.
Other permits in the Long Branch-Vernon Fork Muscatatuck River subwatershed (HUC 051202070404)
- AALBERTS NORTH VERNON, North Vernon: INRM02836, minor permit, permit term to February 10, 2027
- AMERICAN MANUFACTURING SOLUTIONS INCORPORATED, North Vernon: INRM02935, minor permit, discharging to Muscatatuck River, permit term to March 12, 2028
- BUTLERVILLE DOLLAR GENERAL STORE, Butlerville: INRA13514, minor permit, permit term to March 17, 2029
- CITY OF NORTH VERNON QUARRY OVERLOOK & RIM TRAIL, North Nernon: INRA15788, minor permit, permit term to April 13, 2030
- HANSON AGGREGATES MIDWEST-NORTH VERNON QUARRY, North Vernon: ING490116, minor permit, discharging to UNNAMED TRIB TO MUSCATATUCK RIVER, permit term to March 31, 2013
- JENACRES EGG FARM PHASE 2, North Vernon: INR10M597, minor permit, permit term to August 25, 2021
- MUSCATATUCK URBAN TRAINING CENTER, Butlerville: IN0062430, minor permit, discharging to MUSCATATUCK R (VIA VERNON FK), permit term to May 31, 2021
- MUSCATATUCK URBAN TRAINING CNTR, Butlerville: IN0043478, minor permit, discharging to VERNON FK TO MUSCATATUCK R TO E FK WHITE RIVER, permit term to January 31, 2023
- MUSCATATUCK URBAN TRAINING CTR, Butlerville: IN0038539, minor permit, discharging to MUSCATATUCK R (VERNON FK), permit term to January 31, 2011
- NORTH VENON - WAWA, North Vernon: INRA16911, minor permit, permit term to September 29, 2030
Identity
| Facility as filed | NORTH VERNON WWTP |
|---|---|
| Permittee as filed | NORTH VERNON WWTP |
| NPDES ID | IN0020451 |
| 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 | December 26, 2019 |
| Expiration date | January 31, 2025 |
| Issuing agency | IDEM |
| Address | North Vernon, IN 47265 |
| Receiving water | MUSCATATUCK R (VERNON FK) |
| Subwatershed | Long Branch-Vernon Fork Muscatatuck River (HUC 051202070404) |
| Program components on file | Biosolids, CSO, POTW, Pretreatment |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 33Pollutants on file
- 26Under a numeric limit
- 33With a violation of any kind
- 8With 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, colony forming units [CFU] | 6 | 49 | 43 | June 30, 2026 | 99,999% over the limit |
| Chlorine, total residual | 4 | 17 | 13 | May 31, 2026 | 1,567% over the limit |
| Copper, total recoverable | 4 | 16 | 10 | October 31, 2024 | 100% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 19 | 8 | November 30, 2014 | 218% over the limit |
| Oxygen, dissolved [DO] | 2 | 15 | 6 | June 30, 2024 | 90% over the limit |
| E. coli, MTEC-MF | 0 | 6 | 6 | May 31, 2001 | 171% over the limit |
| pH | 4 | 9 | 3 | May 31, 2014 | |
| Solids, total suspended | 6 | 16 | 1 | November 30, 2022 | 22% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 6 | 16 | 0 | ||
| Nickel, total recoverable | 4 | 12 | 0 | ||
| Zinc, total recoverable | 4 | 10 | 0 | ||
| Lead, total recoverable | 4 | 10 | 0 | ||
| Flow, in conduit or thru treatment plant | 3 | 10 | 0 | ||
| Cyanide, free [as free] | 4 | 8 | 0 | ||
| Cyanide, total [as CN] | 0 | 8 | 0 | ||
| Nitrogen, total [as N] | 2 | 7 | 0 | ||
| Precipitation, monthly accumulation | 1 | 4 | 0 | ||
| Phosphorus, total [as P] | 4 | 3 | 0 | ||
| LC50 Static Renewal 96Hr Acute Pimephales promelas | 0 | 3 | 0 | ||
| Noel Statre 7Day Chronic Pimephales | 0 | 3 | 0 | ||
| Cyanide, free [amenable to chlorination] | 4 | 2 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 3 | 2 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 3 | 2 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 3 | 2 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 3 | 2 | 0 | ||
| Flow, total | 2 | 2 | 0 | ||
| Duration | 1 | 2 | 0 | ||
| Overflow volume [SS0 volume, CSO volume] | 1 | 2 | 0 | ||
| Flow, wastewater by-passing trtmnt plant | 0 | 2 | 0 | ||
| LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia | 0 | 2 | 0 | ||
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| Number of Events | 4 | 1 | 0 | ||
| Discharge event observation [Visual Monitoring] | 1 | 1 | 0 |
Inspections, violations and enforcement
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 5, 2026 | Monitoring Violations - Frequency of Sampling Violation | ST6 |
| March 5, 2026 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| March 5, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| August 5, 2026 | Audit | S |
| March 5, 2026 | Evaluation | S |
| March 5, 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
| Date | What EPA recorded | Agency |
|---|---|---|
| March 5, 2026 | Notice of Noncompliance Issued | State |
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.