Clean Water Act discharge permit · NPDES MO0119326

MAWC DEER HAVEN WWTP, Wardsville, MO: NPDES MO0119326 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
9Pollutants under a numeric limit
7Pollutants with an effluent exceedance

MAWC DEER HAVEN WWTP, held by Missouri American Water Co, holds NPDES permit MO0119326, which discharges to Rock Cr.. EPA’s file records it issued July 26, 2016 and expiring September 30, 2020. 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	MAWC DEER HAVEN WWTP
Permittee as filed	Missouri American Water Co
NPDES ID	MO0119326
Permit status	Effective
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Publicly owned treatment works
Issued	July 26, 2016
Expiration date	September 30, 2020
Issuing agency	MODNR-Water Protection Program
Address	Wardsville, MO 65101
Receiving water	Rock Cr.
Subwatershed	Gum Spring Branch-Osage River (HUC 102901110405)
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

11Pollutants on file
9Under a numeric limit
9With a violation of any kind
7With 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	72	72	June 30, 2014	92,300% over the limit
Coliform, fecal general	0	23	23	May 31, 2013	10,400% over the limit
Nitrogen, ammonia total [as N]	4	19	19	July 31, 2020	914% over the limit
E. coli, colony forming units [CFU]	0	10	10	June 30, 2015	2,098% over the limit
Solids, total suspended	3	5	3	November 30, 2011	180% over the limit
BOD, 5-day, 20 deg. C	3	4	2	November 30, 2011	58% over the limit
E. coli	2	1	1	May 31, 2017	84% over the limit
pH	2	2	0
Oil and grease [soxhlet extr.] tot.	2	2	0
Oxygen, dissolved [DO]	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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MO0119326.

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

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MO0119326.

Start the watch

How we handle your data → Privacy

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 MO0119326 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 MO0119326 for MAWC DEER HAVEN WWTP in Wardsville, MO, with permit status listed as Effective and a Minor Discharger class. The page lists 11 pollutants on file, 9 under a numeric limit, and 7 with an effluent exceedance.