Clean Water Act discharge permit · NPDES MO0136298

LAKE TISHOMINGO WWTP, Hillsboro, MO: NPDES MO0136298 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
11Pollutants under a numeric limit
0Pollutants with an effluent exceedance

LAKE TISHOMINGO WWTP, held by PWSD #13 of Jefferson County, holds NPDES permit MO0136298, which discharges to Tributary To Lake Tishomingo. EPA’s file records it issued October 31, 2018 and expiring June 30, 2023. 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	LAKE TISHOMINGO WWTP
Permittee as filed	PWSD #13 of Jefferson County
NPDES ID	MO0136298
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	October 31, 2018
Expiration date	June 30, 2023
Address	Hillsboro, MO 63050
Receiving water	Tributary to Lake Tishomingo
Subwatershed	Belew Creek (HUC 071401040404)
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

14Pollutants on file
11Under a numeric limit
14With a violation of any kind
0With 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
BOD, 5-day, 20 deg. C	2	35
Solids, total suspended	2	35
Nitrogen, ammonia total [as N]	4	32
pH	2	32
Oil and grease [soxhlet extr.] tot.	2	32
Flow, in conduit or thru treatment plant	2	32
E. coli	2	12
E. coli, colony forming units [CFU]	0	6
BOD, 5-day, percent removal	1	2
Solids, suspended percent removal	1	2
Toxicity [acute], Ceriodaphnia dubia	1	1
Toxicity [acute], Pimephales promelas [Fathead Minnow]	1	1
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia	0	1
LC50 Static 48Hr Acute Pimephales promelas	0	1

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MO0136298.

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

5Single-event violations

Date	What EPA recorded	Agency
September 7, 2023	Permit Violations - Unapproved Operation	ST6
June 25, 2018	Permit Violations - Violation Specified in Comment	ST6
June 25, 2018	Reporting Violations - Improper/ Incorrect Reporting	ST6
June 25, 2018	Management Practice Violations - Improper Operation and Maintenance	ST6
March 21, 2017	Reporting Violations - Improper/ Incorrect Reporting	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 MO0136298 there.

Nearby on the register

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

This public-records page covers Clean Water Act discharge permit NPDES MO0136298 for LAKE TISHOMINGO WWTP in Hillsboro, MO, held by PWSD #13 of Jefferson County, with a permit status of Administratively continued and a discharger class of Minor. The page lists 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, and gives the permit's issue date as October 31, 2018 and expiration date as June 30, 2023.