Clean Water Act discharge permit · NPDES IL0023094

EAST ALTON STP, VILLAGE OF, East Alton, IL: NPDES IL0023094 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
10Pollutants under a numeric limit
6Pollutants with an effluent exceedance

EAST ALTON STP, VILLAGE OF, held by EAST ALTON, VILLAGE OF, holds NPDES permit IL0023094, which discharges to Wood River, Mississippi River. EPA’s file records it issued January 9, 2018 and expiring January 31, 2023. 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	EAST ALTON STP, VILLAGE OF
Permittee as filed	EAST ALTON, VILLAGE OF
NPDES ID	IL0023094
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	January 9, 2018
Expiration date	January 31, 2023
Address	East Alton, IL 62024
Receiving water	WOOD RIVER, MISSISSIPPI RIVER
Receiving water impaired	303(D) Listed
Subwatershed	East Branch Wood River-Wood River (HUC 071100090304)
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

10Pollutants on file
10Under a numeric limit
10With a violation of any kind
6With 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	37	5	October 31, 2002	62% over the limit
Solids, total suspended	9	35	5	April 30, 2004	108% over the limit
Phosphorus, total [as P]	4	14	4	January 31, 2021	60% over the limit
Coliform, fecal general	2	7	3	September 30, 2008	99,999% over the limit
Chlorine, total residual	4	9	2	August 31, 2011	167% over the limit
Oxygen, dissolved [DO]	5	9	1	November 30, 2016	24% over the limit
Nitrogen, ammonia total [as N]	17	24	0
Flow, in conduit or thru treatment plant	6	20	0
pH	4	15	0
BOD, 5-day, 20 deg. C	1	2	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 IL0023094.

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 IL0023094 there.

Nearby on the register

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

This public-records page covers NPDES permit IL0023094 for EAST ALTON STP, VILLAGE OF in East Alton, IL, which is administratively continued and classed as a Minor Discharger. The page lists 10 as the discharger class, 6 pollutants under a numeric limit, and 6 pollutants with an effluent exceedance.