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Clean Water Act discharge permit · NPDES MO0049352

OAK RIDGE TRAILER COURT WWTF, Hillsboro, MO: NPDES MO0049352 discharge permit, effluent exceedances, inspections, penalties

OAK RIDGE TRAILER COURT WWTF, held by Oak Ridge Park Properties LLC, holds NPDES permit MO0049352, which discharges to Tributary To Sandy Creek. EPA’s file records it issued February 24, 2017 and expiring December 31, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedOAK RIDGE TRAILER COURT WWTF
Permittee as filedOak Ridge Park Properties LLC
NPDES IDMO0049352
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
IssuedFebruary 24, 2017
Expiration dateDecember 31, 2021
AddressHillsboro, MO 63050
Receiving waterTributary to Sandy Creek
SubwatershedSandy Creek (HUC 071401010803)

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]43826December 31, 20241,839% over the limit
E. coli83012December 31, 20226,939% over the limit
Solids, total suspended2142September 30, 2017263% over the limit
BOD, 5-day, 20 deg. C2120
Flow, in conduit or thru treatment plant2120
pH160

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
August 27, 2025Reporting Violations - Improper/ Incorrect ReportingST6
March 31, 2025Effluent Violations - Numeric effluent violationST6
July 9, 2024Effluent Violations - Numeric effluent violationST6
April 3, 2024Effluent Violations - Numeric effluent violationST6
December 29, 2023Reporting Violations - Failure to Submit DMRsST6
November 20, 2023Reporting Violations - Failure to Submit DMRsST6
October 6, 2023Permit Violations - Violation Specified in CommentST6
April 4, 2023Effluent Violations - Numeric effluent violationST6
January 11, 2023Effluent Violations - Numeric effluent violationST6
April 4, 2022Effluent Violations - Numeric effluent violationST6
March 11, 2022Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
March 11, 2022Permit Violations - Failure to Submit Timely Permit Renewal ApplicationST6
March 11, 2022Effluent Violations - Numeric effluent violationST6
April 2, 2021Effluent Violations - Numeric effluent violationST6
December 30, 2020Effluent Violations - Numeric effluent violationST6
June 29, 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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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES MO0049352 for the OAK RIDGE TRAILER COURT WWTF in Hillsboro, MO, held by Oak Ridge Park Properties LLC, which discharges to Tributary To Sandy Creek within the Sandy Creek subwatershed (HUC 071401010803). The permit is listed as administratively continued, with an issue date of February 24, 2017 and an expiration date of December 31, 2021, and the page reports 6 pollutants on file, 6 under a numeric limit, and 6 with a violation of a limit.