Clean Water Act discharge permit · NPDES IA0022144
IOWA ARMY AMMUNITION PLANT, Middletown, IA: NPDES IA0022144 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 25Pollutants under a numeric limit
- 14Pollutants with an effluent exceedance
IOWA ARMY AMMUNITION PLANT, held by US DEPT OF THE ARMY, holds NPDES permit IA0022144. EPA’s file records it issued February 1, 2026 and expiring January 31, 2031. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | IOWA ARMY AMMUNITION PLANT |
|---|---|
| Permittee as filed | US DEPT OF THE ARMY |
| NPDES ID | IA0022144 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Federal facility |
| Issued | February 1, 2026 |
| Expiration date | January 31, 2031 |
| Issuing agency | STA |
| Address | Middletown, IA 52638 |
| Subwatershed | Spring Creek (HUC 070801041503) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 26Pollutants on file
- 25Under a numeric limit
- 19With a violation of any kind
- 14With 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 |
|---|---|---|---|---|---|
| Chloride [as Cl] | 4 | 47 | 35 | February 28, 2026 | 2,260% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 49 | 33 | April 30, 2008 | 123% over the limit |
| Sulfate, total [as SO4] | 0 | 32 | 20 | January 31, 2023 | 364% over the limit |
| Silver, total [as Ag] | 4 | 34 | 18 | March 31, 2025 | 11,011% over the limit |
| Nickel, total [as Ni] | 4 | 29 | 17 | January 31, 2023 | 849% over the limit |
| Solids, total suspended | 26 | 81 | 16 | April 30, 2023 | 216% over the limit |
| E. coli | 1 | 14 | 12 | July 31, 2026 | 5,878% over the limit |
| Aluminum, total [as Al] | 4 | 15 | 11 | July 31, 2024 | 1,647% over the limit |
| pH | 15 | 49 | 10 | November 30, 2012 | |
| Nitrogen, ammonia total [as N] | 96 | 23 | 7 | December 31, 2025 | 802% over the limit |
| Trinitrotoluene [TNT], total | 16 | 73 | 5 | September 30, 2013 | 4,833% over the limit |
| Oil & Grease | 17 | 9 | 5 | November 30, 2022 | 160% over the limit |
| RDX+HMX | 16 | 69 | 1 | September 30, 2013 | 39% over the limit |
| Toxicity [acute], Ceriodaphnia dubia | 1 | 6 | 1 | September 30, 2014 | 100% over the limit |
| Nitrotriazolone [NTO] | 16 | 20 | 0 | ||
| 2,4-Dinitroanisole | 16 | 16 | 0 | ||
| Nitroguanidine | 16 | 16 | 0 | ||
| Iron, total [as Fe] | 4 | 8 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 1 | 5 | 0 | ||
| Nitrogen, total [as N] | 10 | 0 | 0 | ||
| Phosphorus, total [as P] | 10 | 0 | 0 | ||
| Chlorine, total residual | 8 | 0 | 0 | ||
| BOD, 5-day, 20 deg. C | 5 | 0 | 0 | ||
| Cadmium, total [as Cd] | 4 | 0 | 0 | ||
| Selenium, total [as Se] | 4 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 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 IA0022144.
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 IA0022144 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.