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Clean Water Act discharge permit · NPDES MO0128732

THORNFIELD R-1 SCHOOL DISTRICT WWTP, Thornfield, MO: NPDES MO0128732 discharge permit, effluent exceedances, inspections, penalties

THORNFIELD R-1 SCHOOL DISTRICT WWTP, held by Thornfield R-1 School District, holds NPDES permit MO0128732, which discharges to 8-20-13 Mudd V1.0. EPA’s file records it issued June 22, 2016 and expiring December 31, 2019. 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 filedTHORNFIELD R-1 SCHOOL DISTRICT WWTP
Permittee as filedThornfield R-1 School District
NPDES IDMO0128732
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
IssuedJune 22, 2016
Expiration dateDecember 31, 2019
Issuing agencyMODNR-Water Protection Program
AddressThornfield, MO 65762
Receiving water8-20-13 MUDD V1.0
SubwatershedDella Ramsey Hollow-Little North Fork White River (HUC 110100030605)
SIC8211 – Elementary And Secondary Schools

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
BOD, 5-day, 20 deg. C24033March 31, 20151,900% over the limit
Coliform, fecal general02725March 31, 201543,900% over the limit
Solids, total suspended22318March 31, 20151,127% over the limit
Solids, suspended percent removal044December 31, 2021567% over the limit
Nitrogen, ammonia total [as N]273March 31, 2026210% over the limit
BOD, 5-day, percent removal033December 31, 2021567% over the limit
pH271December 31, 2020
E. coli251September 30, 2019186% over the limit
Oil and grease [soxhlet extr.] tot.240
Nitrite + Nitrate total [as N]240
Flow, in conduit or thru treatment plant240

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES MO0128732.

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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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 MO0128732 there.

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 MO0128732 for the Thornfield R-1 School District WWTP in Thornfield, MO, which discharges to receiving water 8-20-13 MUDD V1.0 within the Della Ramsey Hollow-Little North Fork White River watershed (HUC 110100030605). The permit is listed as administratively continued and classed as a Minor Discharger, with 8 pollutants under a numeric limit and 8 pollutants showing an effluent exceedance.