Clean Water Act discharge permit · NPDES OK0020168
COPAN PUBLIC WORKS AUTHORITY, Copan, OK: NPDES OK0020168 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
COPAN PUBLIC WORKS AUTHORITY, held by Copan PWA, holds NPDES permit OK0020168, which discharges to 121400 Copan Ck/Copan Lake. EPA’s file records it issued January 4, 2010 and expiring January 31, 2015. 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 | COPAN PUBLIC WORKS AUTHORITY |
|---|---|
| Permittee as filed | Copan PWA |
| NPDES ID | OK0020168 |
| 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 | January 4, 2010 |
| Expiration date | January 31, 2015 |
| Issuing agency | ODEQ |
| Address | Copan, OK 74022 |
| Receiving water | 121400 Copan Ck/Copan Lake |
| Subwatershed | Lower Copan Lake-Little Caney River (HUC 110701060408) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 8Pollutants on file
- 7Under a numeric limit
- 8With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 3 | 219 | 144 | June 30, 2023 | 553% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 167 | 91 | March 31, 2023 | 99,999% over the limit |
| pH | 2 | 140 | 86 | June 30, 2023 | |
| Coliform, fecal general | 2 | 48 | 24 | July 31, 2015 | 99,999% over the limit |
| Coliform, total general | 2 | 39 | 11 | November 30, 2022 | 99,999% over the limit |
| E. coli | 0 | 15 | 11 | September 30, 2022 | 15,773% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 50 | 0 | ||
| Chlorine, total residual | 1 | 15 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 26, 2020 | Effluent Violations - Unapproved Bypass | ST6 |
| March 19, 2020 | Effluent Violations - Unapproved Bypass | ST6 |
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, OK0020168.
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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 OK0020168 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.