Clean Water Act discharge permit · NPDES MO0136409

ANACONDA SCHOOL WWTP, St. Clair, MO: NPDES MO0136409 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
7Pollutants under a numeric limit
10Pollutants with an effluent exceedance

ANACONDA SCHOOL WWTP, held by St. Clair R-XIII School District, holds NPDES permit MO0136409, which discharges to Tributary To Dry Creek. EPA’s file records it issued April 1, 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 filed	ANACONDA SCHOOL WWTP
Permittee as filed	St. Clair R-XIII School District
NPDES ID	MO0136409
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	April 1, 2020
Expiration date	March 31, 2025
Address	St. Clair, MO 63077
Receiving water	Tributary to Dry Creek
Subwatershed	Roth Creek-Bourbeuse River (HUC 071401030404)
SIC	8211 – Elementary And Secondary Schools

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

11Pollutants on file
7Under a numeric limit
11With a violation of any kind
10With 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
Chlorine, total residual	2	124	96	June 30, 2026	44,018% over the limit
Nitrite + Nitrate total [as N]	0	116	32	November 30, 2014	600% over the limit
E. coli, colony forming units [CFU]	0	52	32	February 28, 2018	190,376% over the limit
Nitrogen, ammonia total [as N]	4	52	24	March 31, 2023	969% over the limit
Solids, total suspended	2	47	19	December 31, 2023	1,100% over the limit
BOD, 5-day, 20 deg. C	2	44	16	March 31, 2025	1,300% over the limit
pH	2	38	10	March 31, 2025
BOD, 5-day, percent removal	0	7	4	December 31, 2025	567% over the limit
E. coli	2	8	2	March 31, 2023	7,297% over the limit
Solids, suspended percent removal	0	5	2	September 30, 2025	567% over the limit
Flow, in conduit or thru treatment plant	2	28	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

6Single-event violations

Date	What EPA recorded	Agency
August 22, 2024	Effluent Violations - Numeric effluent violation	ST6
June 29, 2020	Effluent Violations - Numeric effluent violation	ST6
February 26, 2019	Reporting Violations - Improper/ Incorrect Reporting	ST6
February 26, 2019	Permit Violations - Violation Specified in Comment	ST6
June 29, 2018	Effluent Violations - Numeric effluent violation	ST6
July 6, 2017	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.

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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 MO0136409 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 MO0136409 for the ANACONDA SCHOOL WWTP in St. Clair, MO, held by St. Clair R-XIII School District and discharging to Tributary To Dry Creek. The page lists a permit status of Administratively continued, a discharger class of Minor, 7 pollutants under a numeric limit, and 10 pollutants with an effluent exceedance. The permit's file dates are April 1, 2020 for issuance and March 31, 2025 for expiration, as of October 14, 2026.