Clean Water Act discharge permit · NPDES IA0035963
LA PORTE CITY, CITY OF STP, La Porte City, IA: NPDES IA0035963 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
LA PORTE CITY, CITY OF STP, held by CITY OF LAPORTE CITY, holds NPDES permit IA0035963. EPA’s file records it issued February 1, 2017 and expiring January 31, 2022. 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 | LA PORTE CITY, CITY OF STP |
|---|---|
| Permittee as filed | CITY OF LAPORTE CITY |
| NPDES ID | IA0035963 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | February 1, 2017 |
| Expiration date | January 31, 2022 |
| Issuing agency | STA |
| Address | La Porte City, IA 50651 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Wolf Creek (HUC 070802050809) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 10Pollutants on file
- 9Under a numeric limit
- 7With a violation of any kind
- 5With 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 | 26 | 20 | June 30, 2024 | |
| Solids, total suspended | 9 | 24 | 18 | December 31, 2022 | 1,500% over the limit |
| Nitrogen, ammonia total [as N] | 48 | 22 | 18 | March 31, 2025 | 146% over the limit |
| E. coli | 0 | 9 | 8 | September 30, 2024 | 46,261% over the limit |
| Oxygen, dissolved [DO] | 1 | 3 | 2 | September 30, 2021 | 74% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 16 | 0 | ||
| Nitrogen, total [as N] | 2 | 2 | 0 | ||
| BOD, 5-day, 20 deg. C | 5 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 5 | 0 | 0 | ||
| Phosphorus, total [as P] | 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 IA0035963.
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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- One state — $4,990/year
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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 IA0035963 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.