Clean Water Act discharge permit · NPDES OKP003032

DARLING INGREDIENTS INC., Collinsville, OK: NPDES OKP003032 discharge permit, effluent exceedances, inspections, penalties

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

DARLING INGREDIENTS INC., held by Darling Ingredients, Inc., holds NPDES permit OKP003032, which discharges to Collinsville, City Of-Potw. EPA’s file records it issued December 7, 2020 and expiring May 31, 2026. 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	DARLING INGREDIENTS INC.
Permittee as filed	Darling Ingredients, Inc.
NPDES ID	OKP003032
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual industrial user permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	December 7, 2020
Expiration date	May 31, 2026
Issuing agency	ODEQ
Address	Collinsville, OK 74021
Receiving water	Collinsville, City of-POTW
NAICS	311613 – Rendering and Meat Byproduct Processing
SIC	2077 – Animal And Marine Fats And Oils

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

6Pollutants on file
6Under a numeric limit
6With 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
pH	2	38	24	January 31, 2013
BOD, 5-day, 20 deg. C	2	24	4	August 31, 2021	294% over the limit
Coliform, fecal general	1	23	4	September 30, 2024	99,999% over the limit
Oil and grease, hexane extr method	2	21	0
Flow, in conduit or thru treatment plant	2	21	0
Solids, total suspended	2	20	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 26, 2018	Permit Violations - Violation Specified in Comment	ST6

Inspections

EPA’s inspection file holds no inspection for NPDES OKP003032.

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 OKP003032.

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

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, OKP003032.

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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 OKP003032 there.

Nearby on the register

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

This public-records page covers NPDES discharge permit OKP003032, held by DARLING INGREDIENTS INC. in Collinsville, OK, and lists its status as administratively continued with a minor discharger class of 6. The page reports 3 pollutants under a numeric limit and 3 pollutants with an effluent exceedance, with the permit issued December 7, 2020 and expiring May 31, 2026.