Clean Water Act discharge permit · NPDES IA0071552
CHELSEA CITY OF STP, Chelsea, IA: NPDES IA0071552 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
CHELSEA CITY OF STP, held by CITY OF CHELSEA, holds NPDES permit IA0071552. EPA’s file records it issued February 1, 2021 and expiring January 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 | CHELSEA CITY OF STP |
|---|---|
| Permittee as filed | CITY OF CHELSEA |
| NPDES ID | IA0071552 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | February 1, 2021 |
| Expiration date | January 31, 2026 |
| Issuing agency | STA |
| Address | Chelsea, IA 52215 |
| Subwatershed | Otter Creek (HUC 070802080702) |
| 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
- 5Pollutants on file
- 5Under a numeric limit
- 4With 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 |
|---|---|---|---|---|---|
| pH | 2 | 50 | 16 | August 31, 2013 | |
| Nitrogen, ammonia total [as N] | 48 | 113 | 15 | February 29, 2024 | 495% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 133 | 12 | August 31, 2020 | 148% over the limit |
| Solids, total suspended | 9 | 118 | 6 | March 31, 2019 | 408% over the limit |
| BOD, 5-day, 20 deg. C | 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 IA0071552.
Inspections
EPA’s inspection file holds no inspection for NPDES IA0071552.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES IA0071552.
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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Start the watch
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- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/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 IA0071552 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.