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Clean Water Act discharge permit · NPDES MO0099058

MAPAVILLE STATE SCHOOL WWTP, Mapaville, MO: NPDES MO0099058 discharge permit, effluent exceedances, inspections, penalties

MAPAVILLE STATE SCHOOL WWTP, held by O.A/ FMDC, holds NPDES permit MO0099058, which discharges to Tributary To Joachim Cr.. EPA’s file records it issued July 24, 2018 and expiring March 31, 2022. 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 filedMAPAVILLE STATE SCHOOL WWTP
Permittee as filedO.A/ FMDC
NPDES IDMO0099058
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
IssuedJuly 24, 2018
Expiration dateMarch 31, 2022
AddressMapaville, MO 63065
Receiving waterTributary to Joachim Cr.
SubwatershedLower Joachim Creek (HUC 071401010804)

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
BOD, 5-day, percent removal12014March 31, 202699,999% over the limit
Solids, suspended percent removal11812March 31, 202699,999% over the limit
Nitrogen, ammonia total [as N]42311December 31, 2024441% over the limit
E. coli2186June 30, 20221,978% over the limit
Solids, total suspended2294March 31, 202447% over the limit
pH2284March 31, 2026
BOD, 5-day, 20 deg. C2272March 31, 202313% over the limit
Flow, in conduit or thru treatment plant2300

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 16, 2026Effluent Violations - Numeric effluent violationST6
March 16, 2026Reporting Violations - Failure to Submit DMRsST6
December 16, 2025Effluent Violations - Numeric effluent violationST6
June 18, 2025Effluent Violations - Numeric effluent violationST6
March 20, 2025Effluent Violations - Numeric effluent violationST6
January 11, 2023Effluent Violations - Numeric effluent violationST6
October 19, 2022Effluent Violations - Numeric effluent violationST6
April 3, 2020Effluent 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

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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 MO0099058 there.

Nearby on the register

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