Clean Water Act discharge permit · NPDES IA0042781
OSSIAN CITY OF STP, Ossian, IA: NPDES IA0042781 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
OSSIAN CITY OF STP, held by CITY OF OSSIAN, holds NPDES permit IA0042781. EPA’s file records it issued September 4, 2001 and expiring September 3, 2006.
OSSIAN CITY OF STP, Ossian, Iowa: Individual permit IA0042781, held by CITY OF OSSIAN; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued September 4, 2001, term to September 3, 2006, by STA.
- Flow, in conduit or thru treatment plant: 2 limits, 47 violations of any kind, 45 effluent exceedances, latest April 30, 2026, largest 20,037% over the limit.
- BOD, carbonaceous [5 day, 20 C]: 9 limits, 33 violations of any kind, 25 effluent exceedances, latest April 30, 2023, largest 136% over the limit.
- pH: 5 limits, 8 violations of any kind, 4 effluent exceedances, latest May 31, 2020.
- Solids, total suspended: 9 limits, 14 violations of any kind, 2 effluent exceedances, latest June 30, 2023, largest 13% over the limit.
- Nitrogen, ammonia total [as N]: 48 limits, 5 violations of any kind, 1 effluent exceedance, latest April 30, 2025, largest 13% over the limit.
- Oxygen, dissolved [DO]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Solids, settleable: 3 limits, 0 violations of any kind, 0 effluent exceedances.
Iowa holds 734 Publicly owned treatment works coverages of this permit type in EPA’s file; 10 were issued before IA0042781.
Coverages issued nearest IA0042781
- April 30, 2001: WALNUT CITY OF STP, Walnut, IA0042986, held by CITY OF WALNUT
- June 1, 2001: SHELLSBURG CITY OF STP, Shellsburg, IA0033332, held by CITY OF SHELLSBURG
- June 1, 2001: LOWDEN CITY OF STP, Lowden, IA0047899, held by CITY OF LOWDEN
- June 23, 2001: CENTER POINT CITY OF STP (NORTH), Center Point, IA0021067, held by CITY OF CENTER POINT
- August 27, 2001: AGENCY CITY OF STP, Agency, IA0057754, held by CITY OF AGENCY
- December 3, 2001: TREYNOR CITY OF STP (NORTHWEST), Treynor, IA0039977, held by CITY OF TREYNOR
- January 15, 2002: PACKWOOD CITY OF STP, Packwood, IA0057819, held by CITY OF PACKWOOD
- April 22, 2002: FARMERSBURG CITY OF STP, Farmersburg, IA0028495, held by CITY OF FARMERSBURG
- July 1, 2002: MONDAMIN CITY OF STP, Mondamin, IA0023507, held by CITY OF MONDAMIN
- January 27, 2003: FREDERICKSBURG CITY OF STP, Fredericksburg, IA0028991, held by CITY OF FREDERICKSBURG
OSSIAN CITY OF STP among its neighbors
EPA’s permit file holds 1 discharge permits in the Headwaters Yellow River subwatershed (HUC 070600010901), IA0042781 among them. Its county holds 12, 1 of them major permits; IA0042781 is a minor permit.
Identity
| Facility as filed | OSSIAN CITY OF STP |
|---|---|
| Permittee as filed | CITY OF OSSIAN |
| NPDES ID | IA0042781 |
| 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 | September 4, 2001 |
| Expiration date | September 3, 2006 |
| Issuing agency | STA |
| Address | Ossian, IA 52161 |
| Subwatershed | Headwaters Yellow River (HUC 070600010901) |
Effluent limits and exceedances
- 7Pollutants on file
- 7Under a numeric limit
- 5With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 2 | 47 | 45 | April 30, 2026 | 20,037% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 9 | 33 | 25 | April 30, 2023 | 136% over the limit |
| pH | 5 | 8 | 4 | May 31, 2020 | |
| Solids, total suspended | 9 | 14 | 2 | June 30, 2023 | 13% over the limit |
| Nitrogen, ammonia total [as N] | 48 | 5 | 1 | April 30, 2025 | 13% over the limit |
| Oxygen, dissolved [DO] | 3 | 0 | 0 | ||
| Solids, settleable | 3 | 0 | 0 |
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES IA0042781.
Inspections
EPA’s inspection file holds no inspection for NPDES IA0042781.
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 IA0042781.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.