Clean Water Act discharge permit · NPDES MOG640198

MAWC ST. JOSEPH DWTP, St Joseph, MO: NPDES MOG640198 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
21Pollutants under a numeric limit
1Pollutants with an effluent exceedance

MAWC ST. JOSEPH DWTP, held by MISSOURI-AMERICAN WATER, holds NPDES permit MOG640198, which discharges to Tributary To Roys Branch. EPA’s file records it issued May 1, 2024 and expiring February 24, 2029. 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 ST. JOSEPH DWTP
Permittee as filed	MISSOURI-AMERICAN WATER
NPDES ID	MOG640198
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	May 1, 2024
Expiration date	February 24, 2029
Address	St Joseph, MO 64505
Receiving water	Tributary to Roys Branch
Subwatershed	Roys Branch-Missouri River (HUC 102400110103)
SIC	4941 – Water Supply
Other EPA IDs (FRS)	RCRA handler MOP000039743

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

21Pollutants on file
21Under a numeric limit
2With 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
Chlorine, total residual	2	4	4	March 31, 2016	5% over the limit
Solids, settleable	2	3	0
pH	3	0	0
Total production - mass	2	0	0
Nitrogen, Kjeldahl, total [as N]	2	0	0
Phosphorus, total [as P]	2	0	0
Sodium, total [as Na]	2	0	0
Chloride [as Cl]	2	0	0
Arsenic, total [as As]	2	0	0
Cadmium, total [as Cd]	2	0	0
Chromium, total [as Cr]	2	0	0
Copper, total [as Cu]	2	0	0
Lead, total [as Pb]	2	0	0
Molybdenum, total [as Mo]	2	0	0
Nickel, total [as Ni]	2	0	0
Zinc, total [as Zn]	2	0	0
Aluminum, total [as Al]	2	0	0
Selenium, total [as Se]	2	0	0
Flow, in conduit or thru treatment plant	2	0	0
Mercury, total [as Hg]	2	0	0
Report due [yrmoda]	1	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 MOG640198.

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, MOG640198.

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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 MOG640198 there.

Nearby on the register

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