Clean Water Act discharge permit · NPDES IA0031691
WEST LIBERTY CITY OF STP, West Liberty, IA: NPDES IA0031691 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 13Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
WEST LIBERTY CITY OF STP, held by CITY OF WEST LIBERTY, holds NPDES permit IA0031691. EPA’s file records it issued February 1, 2019 and expiring January 31, 2024. 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 | WEST LIBERTY CITY OF STP |
|---|---|
| Permittee as filed | CITY OF WEST LIBERTY |
| NPDES ID | IA0031691 |
| 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 | February 1, 2019 |
| Expiration date | January 31, 2024 |
| Issuing agency | STA |
| Address | West Liberty, IA 52776 |
| Subwatershed | East Branch Wapsinonoc Creek-Wapsinonoc Creek (HUC 070802060704) |
| Program components on file | Biosolids, POTW |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 14Pollutants on file
- 13Under a numeric limit
- 9With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 48 | 44 | 36 | July 31, 2026 | 163% over the limit |
| Flow, in conduit or thru treatment plant | 0 | 8 | 8 | June 30, 2013 | 181% over the limit |
| Solids, total suspended | 9 | 15 | 7 | May 31, 2022 | 218% over the limit |
| E. coli | 1 | 14 | 4 | July 31, 2026 | 1,172% over the limit |
| pH | 5 | 10 | 3 | March 31, 2024 | |
| BOD, carbonaceous [5 day, 20 C] | 4 | 18 | 2 | April 30, 2013 | 97% over the limit |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 1 | 1 | 1 | August 31, 1993 | 100% over the limit |
| Chloride [as Cl] | 4 | 12 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 4 | 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 | ||
| Toxicity [acute], Ceriodaphnia dubia | 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 IA0031691.
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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Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.