Clean Water Act discharge permit · NPDES IA0033090
SAC CITY, CITY OF STP, Sac City, IA: NPDES IA0033090 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
SAC CITY, CITY OF STP, held by CITY OF SAC CITY, holds NPDES permit IA0033090. EPA’s file records it issued June 1, 2021 and expiring May 31, 2026. 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 | SAC CITY, CITY OF STP |
|---|---|
| Permittee as filed | CITY OF SAC CITY |
| NPDES ID | IA0033090 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | June 1, 2021 |
| Expiration date | May 31, 2026 |
| Issuing agency | STA |
| Address | Sac City, IA 50583 |
| Subwatershed | Sac City-North Raccoon River (HUC 071000060310) |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | ICIS-AIR source IA0000001916100091 |
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
- 9Pollutants on file
- 8Under a numeric limit
- 9With a violation of any kind
- 3With 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 | 4 | 50 | 6 | May 31, 2024 | 488% over the limit |
| Copper, total [as Cu] | 4 | 24 | 4 | July 31, 2026 | 10,661% over the limit |
| pH | 2 | 15 | 1 | July 31, 2023 | |
| Solids, total suspended | 4 | 20 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 4 | 20 | 0 | ||
| Nitrogen, ammonia total [as N] | 48 | 16 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 10 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 9 | 0 | ||
| E. coli | 0 | 2 | 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 IA0033090.
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 IA0033090 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.