Clean Water Act discharge permit · NPDES OK0020796

DELAWARE, CITY OF, Delaware, OK: NPDES OK0020796 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
6Pollutants under a numeric limit
4Pollutants with an effluent exceedance
0Inspections on file
1Formal enforcement actions

DELAWARE, CITY OF, held by Delaware, City of, holds NPDES permit OK0020796, which discharges to 121510020060_00 Delaware Ck/Verdigris R. EPA’s file records it issued August 10, 2012 and expiring August 31, 2017.

DELAWARE, CITY OF, Delaware, Oklahoma: Individual permit OK0020796, held by Delaware, City of; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued August 10, 2012, term to August 31, 2017, by ODEQ; discharges to 121510020060_00 Delaware Ck/Verdigris R.

Solids, total suspended: 3 limits, 311 violations of any kind, 124 effluent exceedances, latest June 30, 2026, largest 1,663% over the limit.
BOD, 5-day, 20 deg. C: 3 limits, 288 violations of any kind, 93 effluent exceedances, latest May 31, 2024, largest 550% over the limit.
pH: 2 limits, 139 violations of any kind, 8 effluent exceedances, latest April 30, 2023.
Coliform, fecal general: 4 limits, 61 violations of any kind, 4 effluent exceedances, latest May 31, 2024, largest 1,300% over the limit.
Flow, in conduit or thru treatment plant: 2 limits, 143 violations of any kind, 0 effluent exceedances.
Chlorine, total residual: 1 limit, 32 violations of any kind, 0 effluent exceedances.
E. coli: 0 limits, 4 violations of any kind, 0 effluent exceedances.

April 23, 2026: State Administrative Order of Consent (State).

Oklahoma holds 197 Publicly owned treatment works coverages of this permit type in EPA’s file; 24 were issued before OK0020796.

Coverages issued nearest OK0020796

July 29, 2011: HYDRO, TOWN OF, Hydro Division, OK0028185, held by Hydro, Town of
August 25, 2011: THE COVES MASTER ASSOC., INC., Afton, OK0037869, held by Coves Master Association, Inc., The
September 15, 2011: ARDMORE INDUSTRIAL AIR PARK WASTEWATER TREATMENT, Ardmore, OK0030422, held by Ardmore, City of (Ind Air Park)
February 27, 2012: OKMULGEE, CITY OF, Okmulgee, OK0028134, held by Okmulgee, City of
April 12, 2012: CAMERON PWA, Cameron, OK0028908, held by Cameron PWA
September 27, 2012: SHAWNEE MUNICIPAL AUTH- NORTH, Shawnee, OK0037893, held by Shawnee Municipal Authority-North
January 24, 2013: SENECA-CAYUGA TRIBE, Miami, OK0039098, held by Seneca-Cayuga Tribe
March 12, 2013: CANDIAN PUBLIC WORKS AUTH, Canadian, OK0035297, held by Canadian PWA
November 26, 2013: SHAWNEE MUNICIPAL AUTH-SOUTH, Shawnee, OK0026051, held by Shawnee Municipal Auth-Southside WWTF
August 1, 2014: BRISTOW, CITY OF, Bristow, OK0032549, held by Bristow, City of

DELAWARE, CITY OF among its neighbors

EPA’s permit file holds 1 discharge permits in the Lower California Creek subwatershed (HUC 110701030308), OK0020796 among them. Its county holds 5, 0 of them major permits; OK0020796 is a minor permit.

Identity

Facility as filed	DELAWARE, CITY OF
Permittee as filed	Delaware, City of
NPDES ID	OK0020796
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 10, 2012
Expiration date	August 31, 2017
Issuing agency	ODEQ
Address	Delaware, OK 74027
Receiving water	121510020060_00 Delaware Ck/Verdigris R
Subwatershed	Lower California Creek (HUC 110701030308)

Effluent limits and exceedances

7Pollutants on file
6Under a numeric limit
7With a violation of any kind
4With 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	311	124	June 30, 2026	1,663% over the limit
BOD, 5-day, 20 deg. C	3	288	93	May 31, 2024	550% over the limit
pH	2	139	8	April 30, 2023
Coliform, fecal general	4	61	4	May 31, 2024	1,300% over the limit
Flow, in conduit or thru treatment plant	2	143	0
Chlorine, total residual	1	32	0
E. coli	0	4	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES OK0020796.

Inspections

EPA’s inspection file holds no inspection for NPDES OK0020796.

Formal enforcement and penalties

1 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Date	What EPA recorded	Agency	Federal penalty	State or local penalty
April 23, 2026	State Administrative Order of Consent	State

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES OK0020796.

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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This page covers the NPDES permit OK0020796 for the Delaware, City of, a Minor Discharger class 6 facility in Delaware, OK. The permit was issued August 10, 2012, and expired August 31, 2017, with a status of Administratively continued. The facility discharges to 121510020060_00 Delaware Ck/Verdigris R and has 4 pollutants with an effluent exceedance.