Clean Water Act discharge permit · NPDES IA0036463
EPWORTH CITY OF STP, Epworth, IA: NPDES IA0036463 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
EPWORTH CITY OF STP, held by CITY OF EPWORTH, holds NPDES permit IA0036463. EPA’s file records it issued February 1, 2021 and expiring January 31, 2026. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | EPWORTH CITY OF STP |
|---|---|
| Permittee as filed | CITY OF EPWORTH |
| NPDES ID | IA0036463 |
| 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 | February 1, 2021 |
| Expiration date | January 31, 2026 |
| Issuing agency | STA |
| Address | Epworth, IA 52045 |
| Subwatershed | Curran Creek-Whitewater Creek (HUC 070600060501) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 11Pollutants on file
- 11Under a numeric limit
- 6With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| pH | 5 | 18 | 13 | January 31, 2026 | |
| Nitrogen, ammonia total [as N] | 48 | 9 | 9 | July 31, 2023 | 372% over the limit |
| Chloride [as Cl] | 9 | 3 | 3 | March 31, 2026 | 22% over the limit |
| Solids, total suspended | 9 | 7 | 1 | December 31, 2023 | 67% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 5 | 1 | December 31, 2017 | 10% over the limit |
| Oxygen, dissolved [DO] | 1 | 4 | 1 | June 30, 2022 | 39% over the limit |
| BOD, 5-day, 20 deg. C | 5 | 0 | 0 | ||
| Nitrogen, total [as N] | 5 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 5 | 0 | 0 | ||
| Phosphorus, total [as P] | 5 | 0 | 0 | ||
| E. coli | 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 IA0036463.
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.
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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 IA0036463 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.