Clean Water Act discharge permit · NPDES OK0035599

OILTON WA, Oilton, OK: NPDES OK0035599 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
6Pollutants under a numeric limit
5Pollutants with an effluent exceedance

OILTON WA, held by Oilton PWA, holds NPDES permit OK0035599, which discharges to 620900010170_10 Cimarron River/Keystone Lake. EPA’s file records it issued June 15, 2017 and expiring June 30, 2022. 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	OILTON WA
Permittee as filed	Oilton PWA
NPDES ID	OK0035599
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	June 15, 2017
Expiration date	June 30, 2022
Issuing agency	ODEQ
Address	Oilton, OK 74052
Receiving water	620900010170_10 Cimarron River/Keystone Lake
Subwatershed	Dry Creek-Cimarron River (HUC 110500030503)
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
6Under a numeric limit
8With a violation of any kind
5With 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	248	110	May 31, 2021	333% over the limit
BOD, 5-day, 20 deg. C	6	211	67	May 31, 2021	135% over the limit
pH	2	122	28	September 30, 2019
Coliform, fecal general	0	40	19	July 31, 2014	4,900% over the limit
Chlorine, total residual	1	52	5	May 31, 2020	708% over the limit
Flow, in conduit or thru treatment plant	2	97	0
E. coli	4	78	0
Solids, total dissolved- 180 deg. C	0	10	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

1Single-event violations

Date	What EPA recorded	Agency
July 7, 2021	Failure to properly operate and maintain the sewer system - unanticipated prohibited 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.

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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 OK0035599 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers the Clean Water Act discharge permit NPDES OK0035599 held by Oilton PWA for OILTON WA in Oilton, OK, a minor publicly owned treatment works administratively continued past its June 30, 2022 expiration. The page lists 5 pollutants under a numeric limit and 5 pollutants with an effluent exceedance, with the status as of October 14, 2026.