Clean Water Act discharge permit · NPDES IA0032662
SHELDON CITY OF STP, Sheldon, IA: NPDES IA0032662 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 15Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
SHELDON CITY OF STP, held by CITY OF SHELDON, holds NPDES permit IA0032662. EPA’s file records it issued April 1, 2021 and expiring March 31, 2026. 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 | SHELDON CITY OF STP |
|---|---|
| Permittee as filed | CITY OF SHELDON |
| NPDES ID | IA0032662 |
| 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 | April 1, 2021 |
| Expiration date | March 31, 2026 |
| Issuing agency | STA |
| Address | Sheldon, IA 51201 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Engels Creek-Floyd River (HUC 102300020303) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 16Pollutants on file
- 15Under 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 |
|---|---|---|---|---|---|
| Silver, total [as Ag] | 0 | 9 | 9 | July 31, 2017 | 279% over the limit |
| pH | 5 | 9 | 6 | March 31, 2025 | |
| Nitrogen, ammonia total [as N] | 48 | 5 | 5 | April 30, 2025 | 155% over the limit |
| Copper, total [as Cu] | 4 | 9 | 3 | July 31, 2022 | 59% over the limit |
| Solids, total suspended | 9 | 6 | 0 | ||
| Sulfate, total [as SO4] | 4 | 6 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 4 | 6 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 3 | 0 | ||
| Nitrogen, total [as N] | 10 | 0 | 0 | ||
| Phosphorus, total [as P] | 10 | 0 | 0 | ||
| Chloride [as Cl] | 9 | 0 | 0 | ||
| BOD, 5-day, 20 deg. C | 5 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 5 | 0 | 0 | ||
| E. coli | 1 | 0 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 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 IA0032662.
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
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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 IA0032662 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.