Clean Water Act discharge permit · NPDES MO0129194

MOZINGO LAKE RECREATION AREA, Maryville, MO: NPDES MO0129194 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
0Pollutants under a numeric limit
6Pollutants with an effluent exceedance

MOZINGO LAKE RECREATION AREA, held by City of Maryville, holds NPDES permit MO0129194, which discharges to Tributary To Mozingo Cr.. EPA’s file records it issued February 8, 2021 and expiring June 30, 2023. 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	MOZINGO LAKE RECREATION AREA
Permittee as filed	City of Maryville
NPDES ID	MO0129194
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	February 8, 2021
Expiration date	June 30, 2023
Address	Maryville, MO 64468
Receiving water	Tributary to Mozingo Cr.
Subwatershed	Mozingo Creek (HUC 102400130303)

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

Effluent limits and exceedances

10Pollutants on file
0Under a numeric limit
10With a violation of any kind
6With 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	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Ammonia [as N] + unionized ammonia	33	33	July 31, 2014	3,079% over the limit
Nitrogen, ammonia total [as N]	30	20	August 31, 2016	1,823% over the limit
pH	21	11	February 28, 2015
Coliform, fecal general	11	11	June 30, 2013	249,900% over the limit
BOD, 5-day, 20 deg. C	12	2	April 30, 2010	43% over the limit
Chlorine, total residual	6	2	May 31, 2015	25% over the limit
Solids, total suspended	11	0
Flow, in conduit or thru treatment plant	10	0
Oxygen, dissolved [DO]	4	0
E. coli, colony forming units [CFU]	4	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
July 22, 2026	Permit Violations - Violation Specified in Comment	ST6
July 22, 2026	Management Practice Violations - Improper Operation and Maintenance	ST6
March 24, 2017	Reporting Violations - Failure to Submit DMRs	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 MO0129194 there.

Nearby on the register

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

This public-records page covers NPDES permit MO0129194 held by City of Maryville for MOZINGO LAKE RECREATION AREA in Maryville, MO, which discharges to Tributary To Mozingo Cr. The permit is listed as administratively continued, with a minor discharger class of 0, six pollutants under a numeric limit, and six pollutants with an effluent exceedance. The status and dates reflect EPA's permit file as loaded on September 15, 2026, and the HUC 102400130303 subwatershed code is given for Mozingo Creek.