Clean Water Act discharge permit · NPDES IA0004308
WALTER SCOTT JR. ENERGY CENTER, Council Bluffs, IA: NPDES IA0004308 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 14Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
WALTER SCOTT JR. ENERGY CENTER, held by MIDAMERICAN ENERGY COMPANY, holds NPDES permit IA0004308. EPA’s file records it issued August 1, 2021 and expiring July 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 | WALTER SCOTT JR. ENERGY CENTER |
|---|---|
| Permittee as filed | MIDAMERICAN ENERGY COMPANY |
| NPDES ID | IA0004308 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | August 1, 2021 |
| Expiration date | July 31, 2026 |
| Issuing agency | STA |
| Address | Council Bluffs, IA 51501 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Lake Manawa-Missouri River (HUC 102300060602) |
| NAICS | 221112 – Fossil Fuel Electric Power Generation |
| SIC | 4911 – Electric Services |
| Other EPA IDs (FRS) | RCRA handler IAD000671354; ICIS-AIR source IA0000001915500115 |
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
- 15Pollutants on file
- 14Under a numeric limit
- 14With 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 |
|---|---|---|---|---|---|
| Iron, total [as Fe] | 4 | 86 | 70 | September 30, 2012 | 2,015% over the limit |
| Solids, total suspended | 9 | 264 | 4 | August 31, 2014 | 1,620% over the limit |
| pH | 10 | 270 | 2 | December 31, 2019 | |
| Aluminum, total [as Al] | 0 | 18 | 2 | January 31, 2021 | 17% over the limit |
| Oil & Grease | 8 | 256 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 2 | 64 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 2 | 64 | 0 | ||
| Zinc, total [as Zn] | 6 | 58 | 0 | ||
| Chromium, total [as Cr] | 6 | 56 | 0 | ||
| Chlorine, free available | 2 | 40 | 0 | ||
| Sulfate, total [as SO4] | 4 | 16 | 0 | ||
| Chlorine, total residual | 4 | 16 | 0 | ||
| Temperature, water deg. fahrenheit | 13 | 4 | 0 | ||
| Chlorination duration | 1 | 4 | 0 | ||
| E. coli | 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 IA0004308.
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 IA0004308 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.