Clean Water Act discharge permit · NPDES ID0024490
CULDESAC, CITY OF - CULDESAC WWTP, Culdesac, ID: NPDES ID0024490 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 18Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
CULDESAC, CITY OF - CULDESAC WWTP, held by CULDESAC, CITY OF, holds NPDES permit ID0024490, which discharges to Lapwai Creek. EPA’s file records it issued August 18, 2016 and expiring September 30, 2021. 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 | CULDESAC, CITY OF - CULDESAC WWTP |
|---|---|
| Permittee as filed | CULDESAC, CITY OF |
| NPDES ID | ID0024490 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | August 18, 2016 |
| Expiration date | September 30, 2021 |
| Issuing agency | U.S. EPA, REGION 10 |
| Address | Culdesac, ID 83524 |
| Receiving water | LAPWAI CREEK |
| Subwatershed | Upper Lapwai Creek (HUC 170603061201) |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler IDD000158485 |
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
- 23Pollutants on file
- 18Under a numeric limit
- 17With a violation of any kind
- 10With 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 |
|---|---|---|---|---|---|
| Chlorine, total residual | 5 | 246 | 92 | July 31, 2016 | 406% over the limit |
| E. coli | 0 | 167 | 91 | August 31, 2016 | 2,182% over the limit |
| BOD, 5-day, 20 deg. C | 5 | 235 | 37 | May 31, 2026 | 553% over the limit |
| E. coli, MTEC-MF | 2 | 16 | 14 | July 31, 2023 | 496% over the limit |
| BOD, 20-day, percent removal | 0 | 46 | 8 | August 31, 2011 | 186% over the limit |
| Solids, suspended percent removal | 1 | 46 | 7 | February 28, 2026 | 567% over the limit |
| Solids, total suspended | 5 | 203 | 5 | February 28, 2026 | 203% over the limit |
| BOD, 5-day, percent removal | 1 | 6 | 5 | August 31, 2020 | 567% over the limit |
| pH | 4 | 81 | 3 | May 31, 2020 | |
| Nitrogen, ammonia total [as N] | 14 | 45 | 3 | July 31, 2024 | 186% over the limit |
| Temperature, water deg. centigrade | 3 | 46 | 0 | ||
| Phosphorus, total [as P] | 3 | 43 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 42 | 0 | ||
| Nitrogen, nitrate total [as N] | 0 | 38 | 0 | ||
| PER-AND POLYFLUOROALKYL SUBSTANCES | 0 | 6 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 2 | 0 | ||
| Enterococci | 0 | 2 | 0 | ||
| Stream flow, instantaneous | 1 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 1 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 0 | 0 | ||
| Oil and grease | 1 | 0 | 0 | ||
| Floating solids, waste or visible foam-visual | 1 | 0 | 0 | ||
| Solids, total dissolved | 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 ID0024490.
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 ID0024490 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.