Clean Water Act discharge permit · NPDES IA0023736
DOON CITY OF STP, Doon, IA: NPDES IA0023736 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
DOON CITY OF STP, held by CITY OF DOON, holds NPDES permit IA0023736. EPA’s file records it issued August 1, 2018 and expiring July 31, 2023. 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 | DOON CITY OF STP |
|---|---|
| Permittee as filed | CITY OF DOON |
| NPDES ID | IA0023736 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | August 1, 2018 |
| Expiration date | July 31, 2023 |
| Issuing agency | STA |
| Address | Doon, IA 51235 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Village of Doon-Little Rock River (HUC 101702040606) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 8Pollutants on file
- 7Under a numeric limit
- 6With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 0 | 45 | 45 | July 31, 2008 | 124% over the limit |
| Chloride [as Cl] | 4 | 52 | 44 | June 30, 2026 | 113% over the limit |
| E. coli | 4 | 43 | 14 | May 31, 2026 | 7,134% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 5 | 16 | 11 | June 30, 2026 | 140% over the limit |
| Solids, total suspended | 5 | 8 | 5 | December 31, 2023 | 1,675% over the limit |
| pH | 2 | 7 | 2 | November 30, 2025 | |
| Nitrogen, ammonia total [as N] | 48 | 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 IA0023736.
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, IA0023736.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 IA0023736 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.