Clean Water Act discharge permit · NPDES MO0119814

MAWC HIDDEN VALLEY SUBDIVISION WWTF, Holts Summit, MO: NPDES MO0119814 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
5Pollutants under a numeric limit
1Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

MAWC HIDDEN VALLEY SUBDIVISION WWTF, held by Missouri-American Water Company, holds NPDES permit MO0119814, which discharges to Rivaux Cr.. EPA’s file records it issued September 16, 2011 and expiring September 15, 2016. 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 HIDDEN VALLEY SUBDIVISION WWTF
Permittee as filed	Missouri-American Water Company
NPDES ID	MO0119814
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	September 16, 2011
Expiration date	September 15, 2016
Issuing agency	MODNR-Water Protection Program
Address	Holts Summit, MO 65043
Receiving water	Rivaux Cr.
Subwatershed	Rivaux Creek-Missouri River (HUC 103001021306)
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

5Pollutants on file
5Under a numeric limit
4With a violation of any kind
1With 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
Nitrogen, ammonia total [as N]	6	1	1	February 28, 2015	48% over the limit
BOD, 5-day, 20 deg. C	2	2	0
pH	2	2	0
Solids, total suspended	2	2	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 MO0119814.

Inspections

EPA’s inspection file holds no inspection for NPDES MO0119814.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES MO0119814.

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 MO0119814 there.

MAWC HIDDEN VALLEY SUBDIVISION WWTF, Holts Summit, Missouri: Individual permit MO0119814, held by Missouri-American Water Company; Administratively continued (past its expiration date and still in force until reissued); issued September 16, 2011, term to September 15, 2016, by MODNR-Water Protection Program; discharges to Rivaux Cr..

Nitrogen, ammonia total [as N]: 6 limits, 1 violation of any kind, 1 effluent exceedance, latest February 28, 2015, largest 48% over the limit.
BOD, 5-day, 20 deg. C: 2 limits, 2 violations of any kind, 0 effluent exceedances.
pH: 2 limits, 2 violations of any kind, 0 effluent exceedances.
Solids, total suspended: 2 limits, 2 violations of any kind, 0 effluent exceedances.
Flow, in conduit or thru treatment plant: 2 limits, 0 violations of any kind, 0 effluent exceedances.

Other permits held by Missouri-American Water Company

MAWC MONTICELLO WWTF, Jefferson City: MO0033847, issued November 19, 2013
MAWC MAPLEWOOD SUBDIVISION WWTP, Sedalia: MO0035726, issued March 10, 2021
MAWC LEHMAN ACRES, Jefferson City: MO0048810, issued October 31, 2008
MAWC HICKORY HILLS WWTF, California: MO0082121, issued November 6, 2019
MAWC ROGUE CREEK WWTF, Potosi: MO0087181, issued March 20, 2018
MAWC RUSTIC OAKS SUBDIVISION WWTP, Jefferson City: MO0093424, issued February 22, 2008
MAWC LAKEWOOD SUBDIVISION WWTP, Jefferson City: MO0093726, issued October 18, 2013
MAWC RACKERS WWTF, Jefferson City: MO0095397, issued January 18, 2008
MAWC SHAMROCK HEIGHTS SUBDIVISION WWTP, Jefferson City: MO0097632, issued October 13, 2020
MAWC INCLINE VILLAGE WWTF NO. 1, Foristell: MO0098817, issued February 11, 2019

MAWC HIDDEN VALLEY SUBDIVISION WWTF among its neighbors

EPA’s permit file holds 23 discharge permits in the Rivaux Creek-Missouri River subwatershed (HUC 103001021306), MO0119814 among them. Its county holds 219, 3 of them major permits; MO0119814 is a minor permit.

Other permits in the Rivaux Creek-Missouri River subwatershed (HUC 103001021306)

ALGOA REGIONAL WWTF, Jefferson City: MO0044300, minor permit, discharging to Missouri R., permit term to June 30, 2020
BIG SKY SUBDIVISION WWTF, Holts Summit: MOGDS0022, minor permit, discharging to Tributary to Rivaux Cr., permit term to June 30, 2029
BREAK TIME - MILITIA DRIVE, Jefferson City: MORA24032, minor permit, discharging to Rising Cr., permit term to February 7, 2027
BUSINESS, Jefferson City: MORA29397, minor permit, discharging to Tributary to Rising Cr., permit term to February 7, 2027
CAPITAL QUARRIES COMPANY,, Holts Summit: MOG490065, minor permit, discharging to Rivaux Cr., permit term to October 5, 2011
COMMAND WEB MISSOURI, Jefferson City: MONX01030, minor permit, permit term to August 13, 2030
COUNTRY AIRE MEADOWS, Holts Summit: MORA26415, minor permit, discharging to Tributary to Rivaux Creek, permit term to February 7, 2027
DOOLITTLE TRAILER MANUFACTURING, INC., Holts Summit: MO0138479, minor permit, discharging to Tributary to Rivaux Creek, permit term to June 30, 2020
DOOLITTLE TRAILER MANUFACTURING, INC., Holts Summit: MORA21255, minor permit, discharging to Rivaux Cr., permit term to February 7, 2027
EVERGREEN DRIVE ACRES WWTF, Holts Summit: MO0138517, minor permit, discharging to Tributary to Rivaux Creek, permit term to June 30, 2020

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers NPDES permit MO0119814 for the MAWC HIDDEN VALLEY SUBDIVISION WWTF in Holts Summit, MO, held by Missouri-American Water Company, which discharges to Rivaux Cr. The permit is listed as administratively continued, a minor discharger class 5 with 1 pollutant under a numeric limit and 1 pollutant with an effluent exceedance. The facts were loaded on October 14, 2026, and the permit's issue and expiration dates are September 16, 2011 and September 15, 2016.