Clean Water Act discharge permit · NPDES ILG580178

CLAYTON SANITARY DISTRICT - STP, VILLAGE OF, Clayton, IL: NPDES ILG580178 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
9Pollutants under a numeric limit
3Pollutants with an effluent exceedance

CLAYTON SANITARY DISTRICT - STP, VILLAGE OF, held by CLAYTON, VILLAGE OF, holds NPDES permit ILG580178, which discharges to Walnut Fork. EPA’s file records it issued April 30, 2014 and expiring June 30, 2018. 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	CLAYTON SANITARY DISTRICT - STP, VILLAGE OF
Permittee as filed	CLAYTON, VILLAGE OF
NPDES ID	ILG580178
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	April 30, 2014
Expiration date	June 30, 2018
Address	Clayton, IL 62324
Receiving water	WALNUT FORK
Subwatershed	Spees Branch-South Fabius River (HUC 071100030305)
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

9Pollutants on file
9Under a numeric limit
7With a violation of any kind
3With 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
BOD, carbonaceous [5 day, 20 C]	4	22	10	May 31, 2022	265% over the limit
Oxygen, dissolved [DO]	1	9	9	July 31, 2019	8% over the limit
Solids, total suspended	5	23	7	May 31, 2022	110% over the limit
Flow, in conduit or thru treatment plant	4	14	0
pH	2	6	0
BOD, 5-day, 20 deg. C	1	4	0
Chlorine, total residual	1	3	0
Nitrogen, ammonia total [as N]	1	0	0
Coliform, fecal general	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 ILG580178.

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.

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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 ILG580178 there.

Nearby on the register

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

This public-records page covers Clean Water Act NPDES permit ILG580178 for the Clayton Sanitary District's sewage treatment plant in Clayton, IL, which discharges to Walnut Fork in the Spees Branch-South Fabius River watershed (HUC 071100030305). The page lists the permit as administratively continued, with 9 as its discharger class and 3 pollutants under a numeric limit, and 3 pollutants with an effluent exceedance.