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Clean Water Act discharge permit · NPDES MO0048178

LILBOURN WWTP, Lilbourn, MO: NPDES MO0048178 discharge permit, effluent exceedances, inspections, penalties

LILBOURN WWTP, held by City of Lilbourn, holds NPDES permit MO0048178, which discharges to Tributary To Old Chan. Little R.. EPA’s file records it issued September 1, 2016 and expiring September 30, 2020. 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 filedLILBOURN WWTP
Permittee as filedCity of Lilbourn
NPDES IDMO0048178
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
IssuedSeptember 1, 2016
Expiration dateSeptember 30, 2020
AddressLilbourn, MO 63862
Receiving waterTributary to Old Chan. Little R.
SubwatershedTown of North Llibourn (HUC 080202040605)

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
Nitrogen, ammonia total [as N]4307129June 30, 20262,245% over the limit
E. coli217993July 31, 202699,999% over the limit
Solids, total suspended330070March 31, 2026510% over the limit
BOD, 5-day, percent removal08047July 31, 2026567% over the limit
Solids, suspended percent removal08047July 31, 202699,999% over the limit
BOD, 5-day, 20 deg. C327346June 30, 202699,999% over the limit
pH218533March 31, 2015
Flow, in conduit or thru treatment plant22200
Oil and grease [soxhlet extr.] tot.21100
Phosphorus, total [as P]2760
Nitrogen, Kjeldahl, total [as N]0540
Nitrite + Nitrate total [as N]0540
Nitrogen, total [as N]2220
Toxicity [acute], Ceriodaphnia dubia120
Toxicity [acute], Pimephales promelas [Fathead Minnow]120

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

The newest 50 of 55.

DateWhat EPA recordedAgency
June 12, 2026Reporting Violations - Failure to Submit DMRsST6
June 12, 2026Effluent Violations - Numeric effluent violationST6
June 12, 2026Permit Violations - Violation Specified in CommentST6
March 16, 2026Permit Violations - Violation Specified in CommentST6
March 16, 2026Effluent Violations - Numeric effluent violationST6
March 16, 2026Reporting Violations - Failure to Submit DMRsST6
March 16, 2026Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
December 16, 2025Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
December 16, 2025Reporting Violations - Improper/ Incorrect ReportingST6
September 17, 2025Effluent Violations - Numeric effluent violationST6
June 18, 2025Effluent Violations - Numeric effluent violationST6
March 20, 2025Effluent Violations - Numeric effluent violationST6
September 18, 2024Effluent Violations - Numeric effluent violationST6
June 21, 2024Effluent Violations - Numeric effluent violationST6
March 18, 2024Effluent Violations - Numeric effluent violationST6
March 18, 2024Reporting Violations - Failure to Submit DMRsST6
December 14, 2023Reporting Violations - Failure to Submit DMRsST6
December 14, 2023Effluent Violations - Numeric effluent violationST6
November 16, 2023Reporting Violations - Failure to Submit DMRsST6
September 18, 2023Effluent Violations - Numeric effluent violationST6
June 13, 2023Reporting Violations - Failure to Submit DMRsST6
May 17, 2023Management Practice Violations - Improper Operation and MaintenanceST6
May 17, 2023Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
May 17, 2023Permit Violations - Violation Specified in CommentST6
May 17, 2023Reporting Violations - Failure to Submit DMRsST6
March 17, 2023Reporting Violations - Improper/ Incorrect ReportingST6
December 16, 2022Reporting Violations - Failure to Submit DMRsST6
September 19, 2022Reporting Violations - Failure to Submit DMRsST6
June 16, 2022Reporting Violations - Improper/ Incorrect ReportingST6
March 21, 2022Reporting Violations - Failure to Submit DMRsST6
December 16, 2021Reporting Violations - Failure to Submit DMRsST6
May 25, 2021Effluent Violations - Numeric effluent violationST6
May 25, 2021Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
May 25, 2021WW SSO - Failure to report violation that may endanger public health 122.41(l)(7)ST6
December 29, 2020Effluent Violations - Numeric effluent violationST6
December 29, 2020Reporting Violations - Failure to Submit DMRsST6
September 30, 2020Reporting Violations - Failure to Submit DMRsST6
September 30, 2020Effluent Violations - Numeric effluent violationST6
August 25, 2020Effluent Violations - Numeric effluent violationST6
August 25, 2020Permit Violations - Violation Specified in CommentST6
August 25, 2020Reporting Violations - Improper/ Incorrect ReportingST6
August 25, 2020Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
June 30, 2020Reporting Violations - Failure to Submit DMRsST6
June 30, 2020Effluent Violations - Numeric effluent violationST6
April 2, 2020Effluent Violations - Numeric effluent violationST6
April 2, 2020Reporting Violations - Failure to Submit DMRsST6
December 27, 2019Reporting Violations - Failure to Submit DMRsST6
December 27, 2019Effluent Violations - Numeric effluent violationST6
June 27, 2019Reporting Violations - Failure to Submit DMRsST6
December 27, 2018Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6

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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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 MO0048178 there.

Nearby on the register

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