Clean Water Act discharge permit · NPDES IL0036757

VIENNA CORRECTIONAL CENTER STP, Vienna, IL: NPDES IL0036757 discharge permit, effluent exceedances, inspections, penalties

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

VIENNA CORRECTIONAL CENTER STP, held by ILLINOIS DEPARTMENT OF CORRECTIONS, holds NPDES permit IL0036757, which discharges to Unnamed Trib To Bay Creek. EPA’s file records it issued March 25, 2021 and expiring March 31, 2026. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	VIENNA CORRECTIONAL CENTER STP
Permittee as filed	ILLINOIS DEPARTMENT OF CORRECTIONS
NPDES ID	IL0036757
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
Issued	March 25, 2021
Expiration date	March 31, 2026
Address	Vienna, IL 62995
Receiving water	UNNAMED TRIB TO BAY CREEK
Subwatershed	Johnson Creek-Bay Creek (HUC 051402030805)
Other EPA IDs (FRS)	RCRA handler ILD079927588; ICIS-AIR source IL000087856AAA

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

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
Nitrogen, ammonia total [as N]	14	684	302	October 31, 2024	767% over the limit
Solids, total suspended	5	710	212	January 31, 2025	342% over the limit
pH	2	333	141	September 30, 2024
Oxygen, dissolved [DO]	5	222	34	August 31, 2025	90% over the limit
BOD, carbonaceous [5 day, 20 C]	4	430	18	August 31, 2024	61% over the limit
Flow, in conduit or thru treatment plant	4	422	0
Chlorine, total residual	1	107	0
BOD, 5-day, 20 deg. C	1	105	0
Coliform, fecal general	1	41	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 IL0036757.

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 IL0036757 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This public-records page covers Clean Water Act discharge permit NPDES IL0036757 for the Vienna Correctional Center STP in Vienna, IL, held by the Illinois Department of Corrections and discharging to Unnamed Trib To Bay Creek within the Johnson Creek-Bay Creek watershed (HUC 051402030805). The permit is listed as administratively continued and a minor discharger, with 5 pollutants under a numeric limit and 5 pollutants with an effluent exceedance.