Clean Water Act discharge permit · NPDES IA0033235
CITY OF AMES STEAM ELECTRIC PLANT, Ames, IA: NPDES IA0033235 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
CITY OF AMES STEAM ELECTRIC PLANT, held by AMES MUNICIPAL ELECTRIC SYSTEM, holds NPDES permit IA0033235. EPA’s file records it issued June 1, 2017 and expiring May 31, 2022.
CITY OF AMES STEAM ELECTRIC PLANT, Ames, Iowa: Individual permit IA0033235, held by AMES MUNICIPAL ELECTRIC SYSTEM; Effective; issued June 1, 2017, term to May 31, 2022, by STA.
- pH: 0 limits, 28 violations of any kind, 6 effluent exceedances, latest August 31, 2017.
- Zinc, total [as Zn]: 0 limits, 12 violations of any kind, 2 effluent exceedances, latest October 31, 2016, largest 262% over the limit.
- Solids, total suspended: 0 limits, 5 violations of any kind, 1 effluent exceedance, latest May 31, 2007, largest 580% over the limit.
- Chromium, total [as Cr]: 0 limits, 10 violations of any kind, 0 effluent exceedances.
- Chlorine, total residual: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Chlorine, free available: 0 limits, 4 violations of any kind, 0 effluent exceedances.
CITY OF AMES STEAM ELECTRIC PLANT among its neighbors
EPA’s permit file holds 5 discharge permits in the City of Ames-South Skunk River subwatershed (HUC 070801050406), IA0033235 among them. Its county holds 28, 3 of them major permits; IA0033235 is a minor permit.
Other permits in the City of Ames-South Skunk River subwatershed (HUC 070801050406)
- CITY OF AMES, Ames: IAL035955, minor permit, permit term to December 31, 2025
- HICKORY GROVE COURT, LLC, Ames: IA0067814, minor permit, permit term to January 31, 2025
- HOME CITY ICE, Ames: IA0072061, minor permit, permit term to April 30, 2025
- IOWA DOT REST AREA #19 I35 STORY CITY, Story City: IA0067555, minor permit, permit term to July 31, 2017
Identity
| Facility as filed | CITY OF AMES STEAM ELECTRIC PLANT |
|---|---|
| Permittee as filed | AMES MUNICIPAL ELECTRIC SYSTEM |
| NPDES ID | IA0033235 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | June 1, 2017 |
| Expiration date | May 31, 2022 |
| Issuing agency | STA |
| Address | Ames, IA 50010 |
| Subwatershed | City of Ames-South Skunk River (HUC 070801050406) |
| Other EPA IDs (FRS) | RCRA handler IAR000500553; ICIS-AIR source IA0000001916900015 |
Effluent limits and exceedances
- 6Pollutants on file
- 0Under a numeric limit
- 6With 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 |
|---|---|---|---|---|---|
| pH | 0 | 28 | 6 | August 31, 2017 | |
| Zinc, total [as Zn] | 0 | 12 | 2 | October 31, 2016 | 262% over the limit |
| Solids, total suspended | 0 | 5 | 1 | May 31, 2007 | 580% over the limit |
| Chromium, total [as Cr] | 0 | 10 | 0 | ||
| Chlorine, total residual | 0 | 4 | 0 | ||
| Chlorine, free available | 0 | 4 | 0 |
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES IA0033235.
Inspections
EPA’s inspection file holds no inspection for NPDES IA0033235.
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 IA0033235.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.