Velarion Records
The Pay Desk is the free weekly executive pay briefing — one company at a time, every number traceable to a public filing.
You’ll confirm on The Pay Desk’s sign-up page.

Clean Water Act discharge permit · NPDES MO0130052

COWGILL WWTP, Cowgill, MO: NPDES MO0130052 discharge permit, effluent exceedances, inspections, penalties

COWGILL WWTP, held by City of Cowgill, holds NPDES permit MO0130052, which discharges to South Mud Creek. EPA’s file records it issued September 9, 2019 and expiring December 31, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedCOWGILL WWTP
Permittee as filedCity of Cowgill
NPDES IDMO0130052
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedSeptember 9, 2019
Expiration dateDecember 31, 2021
AddressCowgill, MO 64637
Receiving waterSouth Mud Creek
SubwatershedHeadwaters Mud Creek (HUC 102801011402)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

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
Solids, total suspended38917September 30, 2022267% over the limit
Solids, suspended percent removal1134September 30, 2022186% over the limit
BOD, 5-day, 20 deg. C3742March 31, 2017113% over the limit
BOD, 5-day, percent removal1112June 30, 2022151% over the limit
Nitrogen, ammonia total [as N]2560
Flow, in conduit or thru treatment plant2560
E. coli2460
pH2370
Oil and grease [soxhlet extr.] tot.2320

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
June 30, 2026Reporting Violations - Improper/ Incorrect ReportingST6
January 28, 2026Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
January 28, 2026Permit Violations - Violation Specified in CommentST6
January 28, 2026Reporting Violations - Improper/ Incorrect ReportingST6
October 10, 2025Permit Violations - Violation Specified in CommentST6
October 10, 2025Reporting Violations - Improper/ Incorrect ReportingST6
October 10, 2025Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
March 28, 2025Reporting Violations - Improper/ Incorrect ReportingST6
August 2, 2024Reporting Violations - Failure to Submit DMRsST6
June 28, 2024Reporting Violations - Improper/ Incorrect ReportingST6
December 29, 2023Permit Violations - Violation Specified in CommentST6
December 29, 2023Reporting Violations - Improper/ Incorrect ReportingST6
November 16, 2023Reporting Violations - Improper/ Incorrect ReportingST6
March 31, 2023Effluent Violations - Numeric effluent violationST6
March 31, 2023Reporting Violations - Improper/ Incorrect ReportingST6
March 31, 2023Reporting Violations - Failure to Submit DMRsST6
February 8, 2022Permit Violations - Failure to Submit Timely Permit Renewal ApplicationST6
February 8, 2022Permit Violations - Violation Specified in CommentST6
February 8, 2022Effluent Violations - Numeric effluent violationST6
February 8, 2022Permit Violations - Unapproved OperationST6
September 30, 2019Reporting Violations - Improper/ Incorrect ReportingST6
July 9, 2019Reporting Violations - Improper/ Incorrect ReportingST6
June 28, 2018Reporting Violations - Failure to Submit DMRsST6
March 21, 2018Reporting Violations - Failure to Submit DMRsST6
June 23, 2017Effluent Violations - Numeric effluent violationST6
June 2, 2017Permit Violations - Failure to Submit Timely Permit Renewal ApplicationST6
June 2, 2017Reporting Violations - Improper/ Incorrect ReportingST6
June 2, 2017Management Practice Violations - Improper Operation and MaintenanceST6
June 2, 2017Effluent Violations - Numeric effluent violationST6
June 2, 2017Permit Violations - Violation Specified in CommentST6

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.

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, MO0130052.

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 MO0130052 there.

Nearby on the register

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