Clean Water Act discharge permit · NPDES OK0030422

ARDMORE INDUSTRIAL AIR PARK WASTEWATER TREATMENT, Ardmore, OK: NPDES OK0030422 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
6Pollutants under a numeric limit
3Pollutants with an effluent exceedance
1Inspections on file
0Formal enforcement actions

ARDMORE INDUSTRIAL AIR PARK WASTEWATER TREATMENT, held by Ardmore, City of (Ind Air Park), holds NPDES permit OK0030422, which discharges to 310800020010 Washita River. EPA’s file records it issued September 15, 2011 and expiring September 30, 2016.

ARDMORE INDUSTRIAL AIR PARK WASTEWATER TREATMENT, Ardmore, Oklahoma: Individual permit OK0030422, held by Ardmore, City of (Ind Air Park); Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued September 15, 2011, term to September 30, 2016, by ODEQ; discharges to 310800020010 Washita River.

Solids, total suspended: 3 limits, 14 violations of any kind, 5 effluent exceedances, latest March 31, 2026, largest 100% over the limit.
E. coli: 0 limits, 4 violations of any kind, 2 effluent exceedances, latest February 28, 2026, largest 99,999% over the limit.
Chlorine, total residual: 1 limit, 3 violations of any kind, 1 effluent exceedance, latest October 31, 2025, largest 2,122% over the limit.
BOD, 5-day, 20 deg. C: 3 limits, 9 violations of any kind, 0 effluent exceedances.
pH: 2 limits, 6 violations of any kind, 0 effluent exceedances.
Flow, in conduit or thru treatment plant: 2 limits, 5 violations of any kind, 0 effluent exceedances.
Coliform, fecal general: 2 limits, 2 violations of any kind, 0 effluent exceedances.

March 17, 2026: Evaluation (S).

Oklahoma holds 197 Publicly owned treatment works coverages of this permit type in EPA’s file; 21 were issued before OK0030422.

Coverages issued nearest OK0030422

August 13, 2010: COMMERCE, CITY OF, Commerce, OK0020320, held by Commerce, City of
November 3, 2010: U.S. FOREST SERVICE-CEDAR LAKE, Heavener, OK0031828, held by US Forest Service- Cedar Lake
July 14, 2011: COWETA PWA, Coweta, OK0020281, held by Coweta PWA
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
February 27, 2012: OKMULGEE, CITY OF, Okmulgee, OK0028134, held by Okmulgee, City of
April 12, 2012: CAMERON PWA, Cameron, OK0028908, held by Cameron PWA
August 10, 2012: DELAWARE, CITY OF, Delaware, OK0020796, held by Delaware, City of
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

ARDMORE INDUSTRIAL AIR PARK WASTEWATER TREATMENT among its neighbors

EPA’s permit file holds 1 discharge permits in the Big Branch-Washita River subwatershed (HUC 111303030809), OK0030422 among them. Its county holds 8, 0 of them major permits; OK0030422 is a minor permit.

Identity

Facility as filed	ARDMORE INDUSTRIAL AIR PARK WASTEWATER TREATMENT
Permittee as filed	Ardmore, City of (Ind Air Park)
NPDES ID	OK0030422
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	September 15, 2011
Expiration date	September 30, 2016
Issuing agency	ODEQ
Address	Ardmore, OK 73402
Receiving water	310800020010 Washita River
Receiving water impaired	303(D) Listed
Subwatershed	Big Branch-Washita River (HUC 111303030809)

Effluent limits and exceedances

7Pollutants on file
6Under a numeric limit
7With a violation of any kind
3With 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	14	5	March 31, 2026	100% over the limit
E. coli	0	4	2	February 28, 2026	99,999% over the limit
Chlorine, total residual	1	3	1	October 31, 2025	2,122% over the limit
BOD, 5-day, 20 deg. C	3	9	0
pH	2	6	0
Flow, in conduit or thru treatment plant	2	5	0
Coliform, fecal general	2	2	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES OK0030422.

Inspections

Date	What EPA recorded	Agency
March 17, 2026	Evaluation	S

Formal enforcement and penalties

0 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.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES OK0030422.

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

This public-records page covers NPDES permit OK0030422 for the Ardmore Industrial Air Park wastewater treatment facility in Ardmore, OK, which discharges to receiving water 310800020010 Washita River. The page lists 3 pollutants under a numeric limit and 3 pollutants with an effluent exceedance, with the permit shown as administratively continued.