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Clean Water Act discharge permit · NPDES MO0112640

COLUMBIA LANDFILL AND YARD WASTE COMPOST, Columbia, MO: NPDES MO0112640 discharge permit, effluent exceedances, inspections, penalties

COLUMBIA LANDFILL AND YARD WASTE COMPOST, held by Columbia, City of, holds NPDES permit MO0112640, which discharges to Tributary To Hinkson Cr.. EPA’s file records it issued August 7, 2020 and expiring March 31, 2025. 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 filedCOLUMBIA LANDFILL AND YARD WASTE COMPOST
Permittee as filedColumbia, City of
NPDES IDMO0112640
Permit statusEffective
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramIndustrial stormwater
IssuedAugust 7, 2020
Expiration dateMarch 31, 2025
AddressColumbia, MO 65201
Receiving waterTributary to Hinkson Cr.
Receiving water impaired303(D) Listed
SubwatershedMiddle Hinkson Creek (HUC 103001020602)
NAICS562212 – Solid Waste Landfill
SIC4953 – Refuse Systems
Other EPA IDs (FRS)ICIS-AIR source MO0000002901900091

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

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
Aluminum, total recoverable63131June 30, 2025531% over the limit
Solids, total suspended699June 30, 2025113% over the limit
Iron, total recoverable655June 30, 202192% over the limit
Selenium, total recoverable4151September 30, 201965% over the limit
Rainfall6300
Nitrogen, ammonia total [as N]3150
Oil and grease [soxhlet extr.] tot.6140
Thallium, total recoverable4140
Zinc, total recoverable4140
Cadmium, total recoverable4140
Lead, total recoverable4140
Copper, total recoverable4140
Sulfate [as S]3140
Hardness, total [as CaCO3]1140
Fluoride, total [as F]1140
Nitrite + Nitrate total [as N]0140
Phosphorous, total recoverable0140
Carbon, tot organic [TOC]0140
Calcium, total [as Ca]0140
Magnesium, total recoverable0140
Sodium, total recoverable0140
Cobalt, total recoverable0140
Nickel, total recoverable0140
Chromium, total recoverable0140
Vanadium, total recoverable0140
Antimony, total recoverable0140
Manganese, total recoverable0140
Mercury, total recoverable0140
Arsenic, total recoverable4120
Beryllium, total recoverable [as Be]4120
Silver total recoverable4120
Boron, total recoverable0110
Barium, total recoverable080
Organics, gasoline range010
Benzene010
pH1400
Oxygen demand, chem. [high level] [COD]600
Storm water flow600
Solids, settleable400
Chloride [as Cl]400
Chromium, hexavalent dissolved [as Cr]400
Chlorides + Sulfates400
Fluoride300
Carbon, dissolved organic [as C]100
Sulfate, total [as SO4]100
Nitrogen, ammonia, total [as NH3]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
March 28, 2025Effluent Violations - Numeric effluent violationST6
March 31, 2022Effluent 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

The register page covers NPDES permit MO0112640 for COLUMBIA LANDFILL AND YARD WASTE COMPOST in Columbia, MO, held by Columbia, City of, and discharging to Tributary To Hinkson Cr. The permit is listed as Effective, a Minor Discharger class, with 29 pollutants under a numeric limit and 4 pollutants with an effluent exceedance. EPA's file records it as issued August 7, 2020 and expiring March 31, 2025, as the file stood when loaded on October 14, 2026.