Clean Water Act discharge permit · NPDES IL0050083

MCELVAIN SCHOOL STP, Murphysboro, IL: NPDES IL0050083 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
9Pollutants under a numeric limit
5Pollutants with an effluent exceedance

MCELVAIN SCHOOL STP, held by MCELVAIN SCHOOL, holds NPDES permit IL0050083, which discharges to Unnamed Trib To Beaucoup Creek. EPA’s file records it issued October 26, 2015 and expiring October 31, 2020. 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	MCELVAIN SCHOOL STP
Permittee as filed	MCELVAIN SCHOOL
NPDES ID	IL0050083
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
Program	Biosolids
Issued	October 26, 2015
Expiration date	October 31, 2020
Address	Murphysboro, IL 62966
Receiving water	UNNAMED TRIB TO BEAUCOUP CREEK
Subwatershed	McElvain School-Beaucoup Creek (HUC 071401061016)
SIC	8211 – Elementary And Secondary Schools

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
9With a violation of any kind
5With 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]	8	143	115	April 30, 2026	2,620% over the limit
Nitrogen, ammonia total [as N]	44	152	110	September 30, 2025	2,133% over the limit
Solids, total suspended	9	94	58	April 30, 2026	1,242% over the limit
Coliform, fecal general	4	24	22	September 30, 2025	2,925% over the limit
Oxygen, dissolved [DO]	10	31	11	August 31, 2017	31% over the limit
Flow, in conduit or thru treatment plant	6	34	0
pH	4	14	0
BOD, 5-day, 20 deg. C	1	8	0
Chlorine, total residual	2	7	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 IL0050083.

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

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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 IL0050083 there.

Nearby on the register

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

This public-records page covers NPDES permit IL0050083 for MCELVAIN SCHOOL STP in Murphysboro, IL, which discharges to Unnamed Trib To Beaucoup Creek, and is listed as administratively continued with a minor discharger class. The page lists 9 for the discharger class, 5 pollutants under a numeric limit, and 5 pollutants with an effluent exceedance.