Clean Water Act discharge permit · NPDES IA0032484
STORM LAKE CITY OF STP, Storm Lake, IA: NPDES IA0032484 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 15Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
STORM LAKE CITY OF STP, held by CITY OF STORM LAKE, holds NPDES permit IA0032484. EPA’s file records it issued July 1, 2019 and expiring June 30, 2024. 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 | STORM LAKE CITY OF STP |
|---|---|
| Permittee as filed | CITY OF STORM LAKE |
| NPDES ID | IA0032484 |
| 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 | July 1, 2019 |
| Expiration date | June 30, 2024 |
| Issuing agency | STA |
| Address | Storm Lake, IA 50588 |
| Subwatershed | Outlet Creek (HUC 071000060307) |
| Program components on file | Biosolids, POTW |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | ICIS-AIR source IA0000001902100061 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 15Pollutants on file
- 15Under a numeric limit
- 9With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 9 | 39 | 5 | June 30, 2020 | 40% over the limit |
| pH | 5 | 12 | 5 | January 31, 2024 | |
| Nitrogen, ammonia total [as N] | 48 | 7 | 3 | July 31, 2026 | 119% over the limit |
| Toxicity [acute], Ceriodaphnia dubia | 1 | 7 | 1 | July 31, 2026 | 730% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 32 | 0 | ||
| Selenium, total [as Se] | 4 | 10 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 1 | 6 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 7 | 3 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 3 | 0 | ||
| Nitrogen, total [as N] | 10 | 0 | 0 | ||
| Phosphorus, total [as P] | 10 | 0 | 0 | ||
| BOD, 5-day, 20 deg. C | 5 | 0 | 0 | ||
| Cadmium, total [as Cd] | 5 | 0 | 0 | ||
| Chromium, hexavalent [as Cr] | 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 IA0032484.
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 IA0032484 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.