Clean Water Act discharge permit · NPDES IA0023744
ESTHERVILLE CITY OF STP, Estherville, IA: NPDES IA0023744 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 17Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
ESTHERVILLE CITY OF STP, held by CITY OF ESTHERVILLE, holds NPDES permit IA0023744. EPA’s file records it issued January 1, 2021 and expiring December 31, 2025. 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 | ESTHERVILLE CITY OF STP |
|---|---|
| Permittee as filed | CITY OF ESTHERVILLE |
| NPDES ID | IA0023744 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | January 1, 2021 |
| Expiration date | December 31, 2025 |
| Issuing agency | STA |
| Address | Estherville, IA 51334 |
| Subwatershed | Drainage Ditch 151-Des Moines River (HUC 071000020401) |
| Program components on file | Biosolids, POTW |
| NAICS | 221320 – Sewage Treatment Facilities |
| 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
- 18Pollutants on file
- 17Under a numeric limit
- 11With 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 |
|---|---|---|---|---|---|
| Chlorine, total residual | 8 | 45 | 35 | November 30, 2025 | 83% over the limit |
| Solids, total suspended | 9 | 16 | 6 | April 30, 2025 | 176% over the limit |
| Toxicity [acute], Ceriodaphnia dubia | 1 | 6 | 3 | July 31, 2021 | 100% over the limit |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 1 | 6 | 3 | July 31, 2021 | 100% over the limit |
| Copper, total [as Cu] | 4 | 12 | 2 | June 30, 2022 | 151% over the limit |
| Nitrogen, ammonia per cfs of streamflow | 24 | 4 | 2 | February 28, 2025 | 84% over the limit |
| pH | 5 | 9 | 1 | October 31, 2015 | |
| BOD, carbonaceous [5 day, 20 C] | 4 | 10 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 6 | 0 | ||
| Nitrogen, nitrate total [as N] | 2 | 5 | 0 | ||
| E. coli | 0 | 1 | 0 | ||
| Nitrogen, total [as N] | 10 | 0 | 0 | ||
| Phosphorus, total [as P] | 10 | 0 | 0 | ||
| BOD, 5-day, 20 deg. C | 5 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 5 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 5 | 0 | 0 | ||
| Silver, total [as Ag] | 5 | 0 | 0 | ||
| Streamflow | 3 | 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 IA0023744.
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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Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.