Clean Water Act discharge permit · NPDES MO0109959

ST. TROPEZ SUBDIVISION WWTP, Osage Beach, MO: NPDES MO0109959 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
7Pollutants under a numeric limit
5Pollutants with an effluent exceedance

ST. TROPEZ SUBDIVISION WWTP, held by St. Tropez POA Inc, holds NPDES permit MO0109959, which discharges to Lake Of The Ozarks. EPA’s file records it issued February 21, 2018 and expiring June 30, 2022. 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 filed	ST. TROPEZ SUBDIVISION WWTP
Permittee as filed	St. Tropez POA Inc
NPDES ID	MO0109959
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	February 21, 2018
Expiration date	June 30, 2022
Address	Osage Beach, MO 65065
Receiving water	Lake of the Ozarks
Receiving water impaired	303(D) Listed
Subwatershed	Linn Creek-Lake of the Ozarks (HUC 102901090401)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

7Pollutants on file
7Under a numeric limit
5With a violation of any kind
5With 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	13	13	December 31, 2024	1,216% over the limit
Chlorine, total residual	2	12	10	December 31, 2019	1,276% over the limit
BOD, 5-day, 20 deg. C	2	2	2	December 31, 2024	48% over the limit
Solids, total suspended	2	2	2	December 31, 2024	17% over the limit
E. coli	2	2	2	June 30, 2019	99,999% over the limit
pH	2	0	0
Flow, in conduit or thru treatment plant	2	0	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

2Single-event violations

Date	What EPA recorded	Agency
March 5, 2026	Reporting Violations - Improper/ Incorrect Reporting	ST6
August 28, 2018	Permit Violations - Violation Specified in Comment	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.

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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 MO0109959 there.

Nearby on the register

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

The page covers NPDES permit MO0109959 for the ST. TROPEZ SUBDIVISION WWTP in Osage Beach, MO, held by St. Tropez POA Inc, which discharges to Lake Of The Ozarks and is administratively continued. The permit file lists 7 pollutants on file, 7 under a numeric limit, and 5 with an effluent exceedance, with a 303(D) listing for the receiving water and HUC 102901090401 for the Linn Creek-Lake of the Ozarks subwatershed.