Clean Water Act discharge permit · NPDES ILG580148

AVA STP, CITY OF, Ava, IL: NPDES ILG580148 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
9Pollutants under a numeric limit
4Pollutants with an effluent exceedance

AVA STP, CITY OF, held by AVA, CITY OF, holds NPDES permit ILG580148, which discharges to Unnamed Trib Of Rattlesnake Creek. EPA’s file records it issued June 4, 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	AVA STP, CITY OF
Permittee as filed	AVA, CITY OF
NPDES ID	ILG580148
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	June 4, 2014
Expiration date	June 30, 2018
Address	Ava, IL 62907
Receiving water	UNNAMED TRIB OF RATTLESNAKE CREEK
Subwatershed	Rattlesnake Creek (HUC 071401061012)
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
8With a violation of any kind
4With 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
Solids, total suspended	5	63	28	May 31, 2025	70% over the limit
BOD, carbonaceous [5 day, 20 C]	4	52	16	April 30, 2024	340% over the limit
Oxygen, dissolved [DO]	1	10	4	August 31, 2020	45% over the limit
pH	2	15	1	March 31, 2025
Flow, in conduit or thru treatment plant	4	30	0
Chlorine, total residual	1	9	0
BOD, 5-day, 20 deg. C	1	8	0
Nitrogen, ammonia total [as N]	1	5	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

1Single-event violations

Date	What EPA recorded	Agency
April 3, 2025	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6

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 ILG580148 there.

Nearby on the register

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

This public-records page covers NPDES permit ILG580148, held by AVA, CITY OF for the AVA STP, CITY OF facility in Ava, IL, which discharges to UNNAMED TRIB OF RATTLESNAKE CREEK within the Rattlesnake Creek (HUC 071401061012) subwatershed. The permit is listed as administratively continued, with a Minor Discharger class, 4 pollutants with an effluent exceedance, and 9 pollutants under a numeric limit.