Clean Water Act discharge permit · NPDES IA0079774
SILVER CITY, CITY OF STP, Silver City, IA: NPDES IA0079774 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
SILVER CITY, CITY OF STP, held by CITY OF SILVER CITY, holds NPDES permit IA0079774. EPA’s file records it issued March 1, 2017 and expiring February 28, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SILVER CITY, CITY OF STP |
|---|---|
| Permittee as filed | CITY OF SILVER CITY |
| NPDES ID | IA0079774 |
| 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 | March 1, 2017 |
| Expiration date | February 28, 2022 |
| Issuing agency | STA |
| Address | Silver City, IA 51571 |
| Subwatershed | Lower Silver Creek (HUC 102400020606) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 7Pollutants on file
- 7Under a numeric limit
- 3With a violation of any kind
- 2With 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 | 7 | 3 | October 31, 2015 | |
| BOD, carbonaceous [5 day, 20 C] | 5 | 6 | 2 | October 31, 2018 | 20% over the limit |
| Solids, total suspended | 5 | 4 | 0 | ||
| Nitrogen, ammonia total [as N] | 5 | 0 | 0 | ||
| Chloride [as Cl] | 5 | 0 | 0 | ||
| E. coli | 3 | 0 | 0 | ||
| Depth of pond or reservoir in feet | 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 IA0079774.
Inspections
EPA’s inspection file holds no inspection for NPDES IA0079774.
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 IA0079774.
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 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 IA0079774 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.