Clean Water Act discharge permit · NPDES MOG640170

PIEDMONT WTP, Piedmont, MO: NPDES MOG640170 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
21Pollutants under a numeric limit
0Pollutants with an effluent exceedance

PIEDMONT WTP, held by PIEDMONT, CITY OF, holds NPDES permit MOG640170, which discharges to Dry Cr.. EPA’s file records it issued April 18, 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	PIEDMONT WTP
Permittee as filed	PIEDMONT, CITY OF
NPDES ID	MOG640170
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	April 18, 2024
Expiration date	February 24, 2029
Address	Piedmont, MO 63957
Receiving water	Dry Cr.
Subwatershed	McKenzie Creek (HUC 110100070601)
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

21Pollutants on file
21Under a numeric limit
5With 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
Solids, settleable	2	9
pH	3	8
Flow, in conduit or thru treatment plant	2	8
Chlorine, total residual	2	8
Phosphorus, total [as P]	2	2
Total production - mass	2	0
Nitrogen, Kjeldahl, total [as N]	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
Report due [yrmoda]	1	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MOG640170.

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 MOG640170.

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, MOG640170.

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 MOG640170 there.

Nearby on the register

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