Clean Water Act discharge permit · NPDES OK0022756

LEXINGTON PUBLIC WORKS AUTH, Lexington, OK: NPDES OK0022756 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
6Pollutants under a numeric limit
5Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

LEXINGTON PUBLIC WORKS AUTH, held by Lexington PWA, holds NPDES permit OK0022756, which discharges to 520610010010 Canadian River. EPA’s file records it issued October 11, 2019 and expiring October 31, 2024.

LEXINGTON PUBLIC WORKS AUTH, Lexington, Oklahoma: Individual permit OK0022756, held by Lexington PWA; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued October 11, 2019, term to October 31, 2024, by ODEQ; discharges to 520610010010 Canadian River; Sewage Treatment Facilities.

Solids, total suspended: 3 limits, 139 violations of any kind, 85 effluent exceedances, latest April 30, 2026, largest 924% over the limit.
BOD, 5-day, 20 deg. C: 3 limits, 116 violations of any kind, 65 effluent exceedances, latest March 31, 2025, largest 443% over the limit.
E. coli: 4 limits, 78 violations of any kind, 60 effluent exceedances, latest June 30, 2026, largest 321,882% over the limit.
Chlorine, total residual: 1 limit, 30 violations of any kind, 19 effluent exceedances, latest February 29, 2024, largest 809% over the limit.
Coliform, fecal general: 0 limits, 11 violations of any kind, 7 effluent exceedances, latest May 31, 2017, largest 3,900% over the limit.
Flow, in conduit or thru treatment plant: 2 limits, 39 violations of any kind, 0 effluent exceedances.
pH: 2 limits, 36 violations of any kind, 0 effluent exceedances.
Lead, total [as Pb]: 0 limits, 4 violations of any kind, 0 effluent exceedances.

May 10, 2022: Monitoring Violations - No Flow Measurement Device (ST6).
May 10, 2022: Monitoring Violations - Improper Analysis or Lab Error (ST6).
September 30, 2020: Management Practice Violations - Improper Operation and Maintenance (ST6).
September 30, 2020: Monitoring Violations - Improper Analysis or Lab Error (ST6).
September 30, 2020: Monitoring Violations - No Flow Measurement Device (ST6).

Oklahoma holds 197 Publicly owned treatment works coverages of this permit type in EPA’s file; 143 were issued before OK0022756.

Coverages issued nearest OK0022756

July 19, 2019: BRIDGE CREEK PUBLIC SCHOOLS, Blanchard, OK0038458, held by Bridge Creek Public School
July 22, 2019: LANGSTON PUBLIC WORKS AUTH., Langston, OK0027511, held by Langston PWA
August 1, 2019: ALTUS, CITY OF - SW WDS, Altus, OK0028045, held by Altus, City of(SW WDS)
September 2, 2019: LANGLEY PUBLIC WORKS AUTHORITY, Langley, OK0039128, held by Langely PWA
September 5, 2019: SPIRO MIA, Spiro, OK0027693, held by Spiro Municipal Improvement Authority
November 1, 2019: LONE ELM MOBILE HOME PARK, Claremore, OK0037664, held by Lone Elm MHP
November 4, 2019: OKEMAH UTILITIES AUTHORITY, Okemah, OK0020737, held by Okemah Utilities Authority
December 19, 2019: STILWELL AREA DEVELOPMENT AUTH, Stilwell, OK0030341, held by Stilwell Area Development Authority
December 23, 2019: THOMAS PWA, Thomas, OK0038971, held by Thomas PWA
January 10, 2020: ATOKA, CITY OF, Atoka, OK0028576, held by Atoka, City of

LEXINGTON PUBLIC WORKS AUTH among its neighbors

EPA’s permit file holds 1 discharge permits in the Dripping Springs Creek-Canadian River subwatershed (HUC 110902020306), OK0022756 among them. Its county holds 5, 1 of them major permits; OK0022756 is a minor permit.

Identity

Facility as filed	LEXINGTON PUBLIC WORKS AUTH
Permittee as filed	Lexington PWA
NPDES ID	OK0022756
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	October 11, 2019
Expiration date	October 31, 2024
Issuing agency	ODEQ
Address	Lexington, OK 73051
Receiving water	520610010010 Canadian River
Receiving water impaired	303(D) Listed
Subwatershed	Dripping Springs Creek-Canadian River (HUC 110902020306)
NAICS	221320 – Sewage Treatment Facilities
SIC	4952 – Sewerage Systems

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	139	85	April 30, 2026	924% over the limit
BOD, 5-day, 20 deg. C	3	116	65	March 31, 2025	443% over the limit
E. coli	4	78	60	June 30, 2026	321,882% over the limit
Chlorine, total residual	1	30	19	February 29, 2024	809% over the limit
Coliform, fecal general	0	11	7	May 31, 2017	3,900% over the limit
Flow, in conduit or thru treatment plant	2	39	0
pH	2	36	0
Lead, total [as Pb]	0	4	0

Inspections, violations and enforcement

5Single-event violations

Date	What EPA recorded	Agency
May 10, 2022	Monitoring Violations - No Flow Measurement Device	ST6
May 10, 2022	Monitoring Violations - Improper Analysis or Lab Error	ST6
September 30, 2020	Management Practice Violations - Improper Operation and Maintenance	ST6
September 30, 2020	Monitoring Violations - Improper Analysis or Lab Error	ST6
September 30, 2020	Monitoring Violations - No Flow Measurement Device	ST6

Inspections

EPA’s inspection file holds no inspection for NPDES OK0022756.

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 OK0022756.

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

The page covers the NPDES permit OK0022756 for LEXINGTON PUBLIC WORKS AUTH in Lexington, OK, which discharges to 520610010010 Canadian River. The permit was issued October 11, 2019, and expires October 31, 2024, with a status of Administratively continued. It lists 5 pollutants under a numeric limit and 5 pollutants with an effluent exceedance.