Clean Water Act discharge permit · NPDES IA0024554
CARLISLE CITY OF STP, Carlisle, IA: NPDES IA0024554 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 11Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
CARLISLE CITY OF STP, held by CITY OF CARLISLE, holds NPDES permit IA0024554. EPA’s file records it issued April 1, 2019 and expiring March 31, 2024. 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 | CARLISLE CITY OF STP |
|---|---|
| Permittee as filed | CITY OF CARLISLE |
| NPDES ID | IA0024554 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | April 1, 2019 |
| Expiration date | March 31, 2024 |
| Issuing agency | STA |
| Address | Carlisle, IA 50047 |
| Subwatershed | Yeader Creek-Des Moines River (HUC 071000081503) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 14Pollutants on file
- 11Under a numeric limit
- 10With a violation of any kind
- 7With 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 | 5 | 147 | 123 | June 30, 2026 | |
| Chlorine, total residual | 4 | 48 | 38 | August 31, 2021 | 742% over the limit |
| Solids, total suspended | 9 | 65 | 13 | August 31, 2024 | 75% over the limit |
| Nitrogen, ammonia total [as N] | 48 | 14 | 6 | April 30, 2026 | 385% over the limit |
| Coliform, fecal general | 0 | 8 | 4 | September 30, 2005 | 1,100% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 47 | 3 | August 31, 2025 | 26% over the limit |
| E. coli | 0 | 4 | 3 | June 30, 2015 | 636% over the limit |
| Flow, in conduit or thru treatment plant | 0 | 14 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 1 | 7 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 1 | 7 | 0 | ||
| Nitrogen, total [as N] | 10 | 0 | 0 | ||
| Phosphorus, total [as P] | 10 | 0 | 0 | ||
| BOD, 5-day, 20 deg. C | 5 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 5 | 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 IA0024554.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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, IA0024554.
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 IA0024554 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.