Clean Water Act discharge permit · NPDES IA0032361
SLOAN CITY OF STP, Sloan, IA: NPDES IA0032361 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
SLOAN CITY OF STP, held by CITY OF SLOAN, holds NPDES permit IA0032361. EPA’s file records it issued March 1, 2019 and expiring February 29, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SLOAN CITY OF STP |
|---|---|
| Permittee as filed | CITY OF SLOAN |
| NPDES ID | IA0032361 |
| 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 1, 2019 |
| Expiration date | February 29, 2024 |
| Issuing agency | STA |
| Address | Sloan, IA 51055 |
| Subwatershed | Farmers Ditch (HUC 102300040406) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 8Under a numeric limit
- 8With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Chloride [as Cl] | 52 | 83 | 77 | July 31, 2026 | 436% over the limit |
| Nitrogen, ammonia total [as N] | 48 | 18 | 18 | April 30, 2025 | 265% over the limit |
| Solids, total suspended | 9 | 7 | 1 | April 30, 2018 | 43% over the limit |
| Oxygen, dissolved [DO] | 1 | 4 | 1 | February 28, 2015 | 80% over the limit |
| Flow, in conduit or thru treatment plant | 0 | 38 | 0 | ||
| E. coli | 1 | 13 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 4 | 6 | 0 | ||
| pH | 5 | 3 | 0 | ||
| BOD, 5-day, 20 deg. C | 5 | 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 IA0032361.
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 IA0032361 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.