Clean Water Act discharge permit · NPDES MO0134511

MDNR, ONONDAGA CAVE STATE PARK WWTF, Leasburg, MO: NPDES MO0134511 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
8Pollutants under a numeric limit
0Pollutants with an effluent exceedance

MDNR, ONONDAGA CAVE STATE PARK WWTF, held by DNR, Onondaga Cave State Park, holds NPDES permit MO0134511, which discharges to Tributary To Meramec. EPA’s file records it issued January 7, 2019 and expiring September 30, 2022. 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	MDNR, ONONDAGA CAVE STATE PARK WWTF
Permittee as filed	DNR, Onondaga Cave State Park
NPDES ID	MO0134511
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	January 7, 2019
Expiration date	September 30, 2022
Address	Leasburg, MO 65535
Receiving water	Tributary to Meramec
Subwatershed	Blue Springs Creek-Meramec River (HUC 071401020702)
SIC	7033 – Trailer Parks And Campsites

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

8Pollutants on file
8Under a numeric limit
8With 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
Application rate area sprayed	2	16
Application rate, gallons spray irrigation	2	16
Spray irrigation	2	16
Spray irrigation, application rate	2	16
Rainfall	1	9
Freeboard	1	8
Nitrogen, nitrate total [as N]	1	2
Nitrogen, Kjeldahl, total [as N]	1	2

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MO0134511.

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
April 28, 2026	Reporting Violations - Failure to Submit DMRs	ST6
January 9, 2020	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 MO0134511 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 MO0134511, held by DNR, Onondaga Cave State Park for the MDNR, ONONDAGA CAVE STATE PARK WWTF in Leasburg, MO, which discharges to Tributary To Meramec. The permit is listed as administratively continued, with 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance. Its file dates are issued January 7, 2019 and expiring September 30, 2022, as they stood when the page was loaded on October 14, 2026.