Clean Water Act discharge permit · NPDES MOG640085

MAWC, MEXICO WTP, Mexico, MO: NPDES MOG640085 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
18Pollutants under a numeric limit
0Pollutants with an effluent exceedance

MAWC, MEXICO WTP, held by Missouri-American Water Company, holds NPDES permit MOG640085, which discharges to Tributary To S. Fk. Salt R.. EPA’s file records it issued April 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, MEXICO WTP
Permittee as filed	Missouri-American Water Company
NPDES ID	MOG640085
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	April 1, 2024
Expiration date	February 24, 2029
Address	Mexico, MO 65265
Receiving water	Tributary to S. Fk. Salt R.
Subwatershed	Long Branch-South Fork Salt River (HUC 071100060503)
SIC	4941 – Water Supply

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

19Pollutants on file
18Under a numeric limit
1With 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
Flow, in conduit or thru treatment plant	0	2
Total production - mass	2	0
Nitrogen, Kjeldahl, total [as N]	2	0
Phosphorus, total [as P]	2	0
Sodium, total [as Na]	2	0
Chloride [as Cl]	2	0
Arsenic, total [as As]	2	0
Cadmium, total [as Cd]	2	0
Chromium, total [as Cr]	2	0
Copper, total [as Cu]	2	0
Lead, total [as Pb]	2	0
Molybdenum, total [as Mo]	2	0
Nickel, total [as Ni]	2	0
Zinc, total [as Zn]	2	0
Aluminum, total [as Al]	2	0
Selenium, total [as Se]	2	0
Mercury, total [as Hg]	2	0
pH	1	0
Report due [yrmoda]	1	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MOG640085.

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 MOG640085.

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, MOG640085.

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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 MOG640085 there.

Nearby on the register

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