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Clean Water Act discharge permit · NPDES MO0047317

WINDSOR SOUTHEAST WWTF, Windsor, MO: NPDES MO0047317 discharge permit, effluent exceedances, inspections, penalties

WINDSOR SOUTHEAST WWTF, held by City of Windsor, holds NPDES permit MO0047317, which discharges to Elm Br.. EPA’s file records it issued February 1, 2017 and expiring March 31, 2021. 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 filedWINDSOR SOUTHEAST WWTF
Permittee as filedCity of Windsor
NPDES IDMO0047317
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
IssuedFebruary 1, 2017
Expiration dateMarch 31, 2021
AddressWindsor, MO 65360
Receiving waterElm Br.
Receiving water impaired303(D) Listed
SubwatershedEast Fork Tebo Creek (HUC 102901080803)
SIC4952 – 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

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 suspended3258165February 28, 2025473% over the limit
Nitrogen, ammonia total [as N]4139129April 30, 2025962% over the limit
E. coli2107107April 30, 2025150,871% over the limit
BOD, 5-day, 20 deg. C314449December 31, 2024120% over the limit
Solids, suspended percent removal04443April 30, 2025567% over the limit
BOD, 5-day, percent removal03736April 30, 2025567% over the limit
E. coli, colony forming units [CFU]03434October 31, 201618,310% over the limit
Ammonia [as N] + unionized ammonia03125May 31, 2014403% over the limit
Coliform, fecal general088June 30, 2014908% over the limit
Oil and grease [soxhlet extr.] tot.2264April 30, 2025410% over the limit
pH11012April 30, 2024
Oxygen, dissolved [DO]21100
Flow, in conduit or thru treatment plant2440
Chlorine, total residual0340
Phosphorus, total [as P]2140
Nitrogen, total [as N]280
Nitrogen, Kjeldahl, total [as N]080
Nitrite + Nitrate total [as N]080
Toxicity [acute], Ceriodaphnia dubia120
Toxicity [acute], Pimephales promelas [Fathead Minnow]120

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
December 30, 2024Effluent Violations - Numeric effluent violationST6
December 13, 2024Management Practice Violations - Improper Operation and MaintenanceST6
December 13, 2024Effluent Violations - Numeric effluent violationST6
December 13, 2024Permit Violations - Violation Specified in CommentST6
December 13, 2024Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
November 14, 2023Reporting Violations - Improper/ Incorrect ReportingST6
June 16, 2022Effluent Violations - Numeric effluent violationST6
March 21, 2022Effluent Violations - Numeric effluent violationST6
December 16, 2021Effluent Violations - Numeric effluent violationST6
September 22, 2021Effluent Violations - Numeric effluent violationST6
April 2, 2020Effluent Violations - Numeric effluent violationST6
December 27, 2019Effluent Violations - Numeric effluent violationST6
September 30, 2019Reporting Violations - Improper/ Incorrect ReportingST6
July 9, 2019Reporting Violations - Improper/ Incorrect ReportingST6
April 17, 2019Effluent Violations - Numeric effluent violationST6

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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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 MO0047317 for the Windsor Southeast WWTF in Windsor, MO, held by City of Windsor and discharging to Elm Br., with its status as EPA's permit file stood on October 14, 2026. The permit is administratively continued and classed as a Minor discharger, with 12 listed as the discharger class count and 11 pollutants under a numeric limit, of which 11 show an effluent exceedance.