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Clean Water Act discharge permit · NPDES MO0086291

EXETER WWTP, Exeter, MO: NPDES MO0086291 discharge permit, effluent exceedances, inspections, penalties

EXETER WWTP, held by City of Exeter, holds NPDES permit MO0086291, which discharges to Tributary To Flat Cr.. EPA’s file records it issued April 5, 2018 and expiring December 31, 2020. 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 filedEXETER WWTP
Permittee as filedCity of Exeter
NPDES IDMO0086291
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
IssuedApril 5, 2018
Expiration dateDecember 31, 2020
AddressExeter, MO 65647
Receiving waterTributary to Flat Cr.
SubwatershedHeadwaters Flat Creek (HUC 110100020401)
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
Chlorine, total residual210797March 31, 201711,479% over the limit
BOD, 5-day, 20 deg. C25843June 30, 2026290% over the limit
Phosphorus, total [as P]25343June 30, 2026822% over the limit
Ammonia [as N] + unionized ammonia02721February 28, 201899,999% over the limit
E. coli22212May 31, 202699,999% over the limit
Nitrogen, ammonia total [as N]41511May 31, 2026868% over the limit
pH2217February 28, 2025
Oil and grease [soxhlet extr.] tot.2166February 28, 202599,999% over the limit
Solids, total suspended2204April 30, 202677% over the limit
Aluminum, total recoverable4144February 28, 2026762% over the limit
Solids, suspended percent removal184May 31, 2026567% over the limit
BOD, 5-day, percent removal162January 31, 2026567% over the limit
Flow, in conduit or thru treatment plant2140
Oxygen, dissolved [DO]060

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
January 29, 2026Management Practice Violations - No Licensed/Certified OperatorST6
January 29, 2026Reporting Violations - Improper/ Incorrect ReportingST6
January 29, 2026Permit Violations - Unapproved OperationST6
September 25, 2024Effluent Violations - Numeric effluent violationST6
September 19, 2024Effluent Violations - Numeric effluent violationST6
September 22, 2021Effluent Violations - Numeric effluent violationST6
June 17, 2021Effluent Violations - Numeric effluent violationST6
December 29, 2020Effluent Violations - Numeric effluent violationST6
September 30, 2020Reporting Violations - Failure to Submit DMRsST6
September 30, 2020Effluent Violations - Numeric effluent violationST6
January 18, 2019Effluent Violations - Numeric effluent violationST6
December 21, 2017Effluent Violations - Numeric effluent violationST6
September 29, 2017Effluent 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 EPA public-records page covers the Clean Water Act discharge permit NPDES MO0086291 for the EXETER WWTP in Exeter, MO, held by City of Exeter, which discharges to Tributary To Flat Cr. in the Headwaters Flat Creek subwatershed (HUC 110100020401). The permit is listed as administratively continued, with 12 pollutants under a numeric limit and 12 pollutants with an effluent exceedance out of 14 pollutants on file.