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Clean Water Act discharge permit · NPDES MO0023027

SEDALIA NORTH WWTP, Sedalia, MO: NPDES MO0023027 discharge permit, effluent exceedances, inspections, penalties

SEDALIA NORTH WWTP, held by City of Sedalia, holds NPDES permit MO0023027, which discharges to Sewer Branch. EPA’s file records it issued November 1, 2023 and expiring October 31, 2028. 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 filedSEDALIA NORTH WWTP
Permittee as filedCity of Sedalia
NPDES IDMO0023027
Permit statusEffective
Permit typeIndividual permit
Discharger classMajor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedNovember 1, 2023
Expiration dateOctober 31, 2028
AddressSedalia, MO 65301
Receiving waterSewer Branch
SubwatershedSewer Branch-Muddy Creek (HUC 103001030406)

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
Copper, total recoverable214383May 31, 2026161,805% over the limit
Nitrogen, ammonia total [as N]146765July 31, 2026449% over the limit
Solids, total suspended36050April 30, 2026328% over the limit
BOD, 5-day, 20 deg. C33929January 31, 2026209% over the limit
Ammonia [as N] + unionized ammonia016315January 31, 2018211% over the limit
Cyanide, total recoverable08714December 31, 2011875% over the limit
Solids, suspended percent removal11212January 31, 2026183% over the limit
pH2166March 31, 2025
Silver total recoverable0415June 30, 2012300% over the limit
Oil and grease [soxhlet extr.] tot.21124June 30, 202224,890% over the limit
Zinc, total recoverable0413November 30, 200566% over the limit
Cadmium, total recoverable2622July 31, 2025166,567% over the limit
BOD, 5-day, percent removal122September 30, 2023183% over the limit
Chromium, total recoverable022February 28, 200532% over the limit
Nickel, total recoverable0600
Chromium, trivalent total recoverable0360
Flow, in conduit or thru treatment plant2120
Toxicity [acute], Ceriodaphnia dubia010
Toxicity [acute], Pimephales promelas [Fathead Minnow]010
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia010
LC50 Static 48Hr Acute Pimephales promelas010
Nitrogen, Kjeldahl, total [as N]400
Nitrite + Nitrate total [as N]400
Phosphorus, total [as P]400
Nitrogen, total [as N]200
Hardness, total [as CaCO3]200
Toxicity [chronic], Ceriodaphnia dubia100
Toxicity [chronic], Pimephales promelas [Fathead Minnow]100

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
July 28, 2026Effluent Violations - Unauthorized DischargeST6
July 28, 2026WW Storm Water Construction - Failure to develop any or adequate SWPPP/SWMPST6
July 28, 2026Effluent Violations - Narrative Effluent ViolationST6
July 28, 2026Effluent Violations - Numeric effluent violationST6
July 28, 2026Permit Violations - Violation Specified in CommentST6
July 28, 2026Management Practice Violations - Improper Operation and MaintenanceST6
July 28, 2026Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
June 26, 2024Effluent Violations - Numeric effluent violationST6
September 14, 2020Permit Violations - Violation Specified in CommentST6
September 14, 2020Management Practice Violations - Improper Operation and MaintenanceST6
September 14, 2020Effluent Violations - Narrative Effluent ViolationST6
September 14, 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.

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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 MO0023027 there.

Nearby on the register

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