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Clean Water Act discharge permit · NPDES MO0022331

HOLCOMB WWTF, Holcomb, MO: NPDES MO0022331 discharge permit, effluent exceedances, inspections, penalties

HOLCOMB WWTF, held by City of Holcomb, holds NPDES permit MO0022331, which discharges to Main Ditch. EPA’s file records it issued June 17, 2016 and expiring March 31, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedHOLCOMB WWTF
Permittee as filedCity of Holcomb
NPDES IDMO0022331
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
IssuedJune 17, 2016
Expiration dateMarch 31, 2021
AddressHolcomb, MO 63852
Receiving waterMain Ditch
SubwatershedDitch Number 27 (HUC 080202040506)

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
E. coli2154124July 31, 202699,999% over the limit
BOD, 5-day, 20 deg. C313655March 31, 202699,999% over the limit
Solids, suspended percent removal02420June 30, 2026186% over the limit
Solids, total suspended3887August 31, 2025181% over the limit
BOD, 5-day, percent removal095March 31, 2026186% over the limit
Oil and grease [soxhlet extr.] tot.2222December 31, 2017176% over the limit
pH1810
Flow, in conduit or thru treatment plant2760
Nitrogen, ammonia total [as N]2600
Phosphorus, total [as P]4340
Nitrogen, total [as N]4260
Nitrogen, Kjeldahl, total [as N]080
Nitrite + Nitrate total [as N]080
Toxicity [acute], Ceriodaphnia dubia100
Toxicity [acute], Pimephales promelas [Fathead Minnow]100

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 15, 2026Effluent Violations - Numeric effluent violationST6
March 16, 2026Effluent Violations - Numeric effluent violationST6
December 16, 2025Effluent Violations - Numeric effluent violationST6
March 5, 2025Reporting Violations - Improper/ Incorrect ReportingST6
March 5, 2025Effluent Violations - Numeric effluent violationST6
September 18, 2024Effluent Violations - Numeric effluent violationST6
March 19, 2024Effluent Violations - Numeric effluent violationST6
March 18, 2024Effluent Violations - Numeric effluent violationST6
November 16, 2023Reporting Violations - Failure to Submit DMRsST6
March 18, 2021Reporting Violations - Failure to Submit DMRsST6
September 21, 2020Effluent Violations - Numeric effluent violationST6
September 21, 2020Reporting Violations - Failure to Submit DMRsST6
September 23, 2019Reporting Violations - Failure to Submit DMRsST6
June 27, 2019Reporting Violations - Failure to Submit DMRsST6
September 24, 2018Effluent Violations - Numeric effluent violationST6
March 21, 2017Reporting Violations - Failure to Submit DMRsST6
March 21, 2017Effluent Violations - Numeric effluent violationST6

Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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, MO0022331.

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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 MO0022331 there.

Nearby on the register

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