Clean Water Act discharge permit · NPDES MO0133230

HILLSBORO BRICKYARD SUBDIVISION WWTP, Hillsboro, MO: NPDES MO0133230 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
6Pollutants under a numeric limit
1Pollutants with an effluent exceedance

HILLSBORO BRICKYARD SUBDIVISION WWTP, held by City of Hillsboro, holds NPDES permit MO0133230, which discharges to Tributary To Cotter Creek. EPA’s file records it issued November 29, 2016 and expiring September 30, 2021. 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 filed	HILLSBORO BRICKYARD SUBDIVISION WWTP
Permittee as filed	City of Hillsboro
NPDES ID	MO0133230
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	November 29, 2016
Expiration date	September 30, 2021
Address	Hillsboro, MO 63050
Receiving water	Tributary to Cotter Creek
Subwatershed	Middle Joachim Creek (HUC 071401010802)
SIC	4952 – 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

6Pollutants on file
6Under a numeric limit
6With a violation of any kind
1With an effluent exceedance

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 measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Nitrogen, ammonia total [as N]	4	3	1	March 31, 2019	10,561% over the limit
BOD, 5-day, 20 deg. C	3	3	0
Solids, total suspended	3	3	0
pH	2	2	0
Flow, in conduit or thru treatment plant	2	2	0
E. coli	2	2	0

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

3Single-event violations

Date	What EPA recorded	Agency
March 26, 2025	Reporting Violations - Improper/ Incorrect Reporting	ST6
March 26, 2025	Effluent Violations - Numeric effluent violation	ST6
September 26, 2023	Effluent Violations - Numeric effluent violation	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.

Watch this permit

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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 MO0133230 there.

Nearby on the register

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

This public-records page covers the Clean Water Act NPDES permit MO0133230 held by the City of Hillsboro for the Hillsboro Brickyard Subdivision WWTP, which discharges to Tributary to Cotter Creek in the Middle Joachim Creek subwatershed (HUC 071401010802). The permit is listed as administratively continued, with 6 as its discharger class, 1 pollutant under a numeric limit, and 1 pollutant with an effluent exceedance.