Clean Water Act discharge permit · NPDES IN0023973
OLDENBURG WWTP, Oldenburg, IN: NPDES IN0023973 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
OLDENBURG WWTP holds NPDES permit IN0023973, which discharges to Whitewater R (W Fk) Via Salt-Harvey. EPA’s file records it issued March 20, 2019 and expiring May 31, 2024. 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 | OLDENBURG WWTP |
|---|---|
| Permittee as filed | OLDENBURG WWTP |
| NPDES ID | IN0023973 |
| 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 20, 2019 |
| Expiration date | May 31, 2024 |
| Issuing agency | IDEM |
| Address | Oldenburg, IN 47036 |
| Receiving water | WHITEWATER R (W FK) VIA SALT-HARVEY |
| Subwatershed | Fremont Branch-Salt Creek (HUC 050800030505) |
| 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
- 11Pollutants on file
- 10Under a numeric limit
- 10With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 8 | 85 | 40 | April 30, 2023 | 274% over the limit |
| Solids, total suspended | 4 | 75 | 23 | April 30, 2024 | 357% over the limit |
| Oxygen, dissolved [DO] | 2 | 38 | 21 | November 30, 2023 | 50% over the limit |
| Chlorine, total residual | 4 | 36 | 18 | July 31, 2024 | 633% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 59 | 10 | May 31, 2001 | 99,999% over the limit |
| pH | 2 | 28 | 2 | December 31, 2020 | |
| E. coli, colony forming units [CFU] | 3 | 10 | 2 | October 31, 2006 | 3,857% over the limit |
| Flow, in conduit or thru treatment plant | 1 | 24 | 0 | ||
| Flow, total | 1 | 10 | 0 | ||
| Flow, wastewater by-passing trtmnt plant | 0 | 3 | 0 | ||
| Number of Events | 2 | 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 IN0023973.
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, IN0023973.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/year
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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 IN0023973 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.