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 (October 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)
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

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

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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 October 14, 2026.

This page covers the NPDES permit OK0020168 for COPAN PUBLIC WORKS AUTHORITY in Copan, OK. It lists 6 pollutants under a numeric limit and 6 pollutants with an effluent exceedance. The permit was issued January 4, 2010, and expired January 31, 2015.