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Clean Water Act discharge permit · NPDES MO0113751

MAWC, TRIMBLE WWTF, Trimble, MO: NPDES MO0113751 discharge permit, effluent exceedances, inspections, penalties

MAWC, TRIMBLE WWTF, held by Missouri-American Water Company, holds NPDES permit MO0113751, which discharges to Dicks Creek. EPA’s file records it issued November 6, 2019 and expiring September 30, 2024. 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 filedMAWC, TRIMBLE WWTF
Permittee as filedMissouri-American Water Company
NPDES IDMO0113751
Permit statusEffective
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramPublicly owned treatment works
IssuedNovember 6, 2019
Expiration dateSeptember 30, 2024
AddressTrimble, MO 64492
Receiving waterDicks Creek
SubwatershedDicks Creek (HUC 102400120801)

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 suspended23225December 31, 2025124% over the limit
BOD, 5-day, 20 deg. C22922March 31, 2025120% over the limit
pH22411December 31, 2025
Oil and grease [soxhlet extr.] tot.288March 31, 201960% over the limit
Nitrogen, ammonia total [as N]6104March 31, 2026331% over the limit
Solids, suspended percent removal022December 31, 202031% over the limit
E. coli2111June 30, 202537% over the limit
Flow, in conduit or thru treatment plant2100
Toxicity [acute], Ceriodaphnia dubia010
Toxicity [acute], Pimephales promelas [Fathead Minnow]010

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 8, 2026Permit Violations - Violation Specified in CommentST6
June 8, 2026Effluent Violations - Numeric effluent violationST6
June 8, 2026Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
March 29, 2021Effluent 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.

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, MO0113751.

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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 MO0113751 there.

Nearby on the register

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