Velarion Records
Follow this permit Velarion Records emails you this permit’s record, cited to the public filing, and tells you when the register changes it. Free.
We’ll email you a link to confirm. The continuous daily watch on every change is the paid alert. Unsubscribe any time.
Also free: The Pay Desk, the weekly executive pay briefing.

Clean Water Act discharge permit · NPDES MO0110825

OMNIUM AG CHEMICAL PLANT, St Joseph, MO: NPDES MO0110825 discharge permit, effluent exceedances, inspections, penalties

OMNIUM AG CHEMICAL PLANT, held by WINFIELD SOLUTIONS LLC, holds NPDES permit MO0110825, which discharges to Tributary To Missouri River. EPA’s file records it issued May 17, 2017 and expiring May 31, 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 filedOMNIUM AG CHEMICAL PLANT
Permittee as filedWINFIELD SOLUTIONS LLC
NPDES IDMO0110825
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramIndustrial stormwater
IssuedMay 17, 2017
Expiration dateMay 31, 2022
AddressSt Joseph, MO 64504
Receiving waterTributary to Missouri River
SubwatershedWalnut Creek-Missouri River (HUC 102400110106)
NAICS325320 – Pesticide and Other Agricultural Chemical Manufacturing
SIC2879 – Agricultural Chemicals
Other EPA IDs (FRS)RCRA handler MOD000677211; ICIS-AIR source MO0000002902100045

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Dieldrin35626December 31, 20253,499,900% over the limit
Chlordane34819December 31, 202476,823% over the limit
Atrazine36414May 31, 20151,307% over the limit
BHC, total33710December 31, 2024900% over the limit
4,4'-DDD3388September 30, 2017299,900% over the limit
Chlorpyrifos3306December 31, 2018634% over the limit
Lindane3115December 31, 20184,100% over the limit
Prometryn3434February 29, 20122,147,483,650% over the limit
2,4-D, isobutyl ester in sediments0404February 29, 20122,147,483,650% over the limit
Oxygen demand, chem. [high level] [COD]164March 31, 201397% over the limit
Glyphosate, total3453June 30, 20202,147,483,650% over the limit
Endosulfan, total3303December 31, 2022118% over the limit
Metolachlor3492December 31, 202357% over the limit
Trichorofon0382February 29, 20122,147,483,650% over the limit
.gamma.-BHC0262August 31, 2016158% over the limit
Ametryn3221February 29, 2012117% over the limit
Solids, settleable371March 31, 201380% over the limit
Benzene hexachloride011December 31, 2025275% over the limit
Diuron3470
Imidacloprid [Neonicotinoid]3420
Tebupirimfos0360
Dimethylamine0360
Carbaryl, total0360
Organics, total toxic [TTO]0300
Malathion3240
Precipitation volume3220
Dicamba3210
pH6120
Solids, total suspended360
Oil and grease [soxhlet extr.] tot.360
Nitrogen, total [as N]360
Nitrogen, nitrate total [as N]360
Flow, in conduit or thru treatment plant360
Chemical oxygen demand [COD]240
2,4-Dichlorophenoxyacetic acid330
Nitrogen, ammonia total [as N]020

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

DateWhat EPA recordedAgency
March 26, 2025Effluent Violations - Numeric effluent violationST6
September 23, 2024Effluent Violations - Numeric effluent violationST6
December 18, 2023Effluent Violations - Numeric effluent violationST6
July 18, 2023Effluent Violations - Numeric effluent violationST6

Inspections

EPA’s inspection file holds no inspection for NPDES MO0110825.

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 MO0110825.

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, MO0110825.

Start the watch

How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

How we handle your data → Privacy

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 MO0110825 there.

Nearby on the register

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

What this page shows

This public-records page covers NPDES permit MO0110825 for the OMNIUM AG CHEMICAL PLANT in St Joseph, MO, held by WINFIELD SOLUTIONS LLC, which discharges to Tributary To Missouri River and is administratively continued. The page lists 27 pollutants under a numeric limit and 18 pollutants with an effluent exceedance.