Clean Water Act discharge permit · NPDES MO0115461

SCCPWSD #2 NEW MELLE WWTP, New Melle, MO: NPDES MO0115461 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
11Pollutants under a numeric limit
5Pollutants with an effluent exceedance

SCCPWSD #2 NEW MELLE WWTP, held by PWSD #2 of St. Charles County, holds NPDES permit MO0115461, which discharges to Tributary To Dardenne Creek. EPA’s file records it issued May 24, 2017 and expiring September 30, 2019. 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	SCCPWSD #2 NEW MELLE WWTP
Permittee as filed	PWSD #2 of St. Charles County
NPDES ID	MO0115461
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	May 24, 2017
Expiration date	September 30, 2019
Address	New Melle, MO 63365
Receiving water	Tributary to Dardenne Creek
Subwatershed	Upper Dardenne Creek (HUC 071100090103)
Program components on file	Biosolids, POTW
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

12Pollutants on file
11Under a numeric limit
8With 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
Solids, total suspended	2	6	4	January 31, 2010	54,567% over the limit
pH	2	2	2	August 31, 2010
BOD, 5-day, 20 deg. C	2	1	1	January 31, 2010	20% over the limit
BOD, 5-day, percent removal	1	1	1	September 30, 2020	153% over the limit
Solids, suspended percent removal	1	1	1	June 30, 2019	4% over the limit
Ammonia [as N] + unionized ammonia	0	10	0
Toxicity [acute], Ceriodaphnia dubia	1	1	0
Toxicity [acute], Pimephales promelas [Fathead Minnow]	1	1	0
Nitrogen, ammonia total [as N]	4	0	0
Oil and grease [soxhlet extr.] tot.	2	0	0
Flow, in conduit or thru treatment plant	2	0	0
E. coli	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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MO0115461.

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 MO0115461 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 MO0115461 for SCCPWSD #2 NEW MELLE WWTP in New Melle, MO, held by PWSD #2 of St. Charles County, which discharges to Tributary To Dardenne Creek. The permit is listed as administratively continued, with 11 pollutants under a numeric limit and 5 pollutants with an effluent exceedance, and it was issued May 24, 2017 and expired September 30, 2019. The page also lists the Upper Dardenne Creek subwatershed (HUC 071100090103) and the program components Biosolids and POTW.