Clean Water Act discharge permit · NPDES IL0027448

ALTAMONT SOUTH STP, CITY OF, Altamont, IL: NPDES IL0027448 discharge permit, effluent exceedances, inspections, penalties

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

ALTAMONT SOUTH STP, CITY OF, held by ALTAMONT, CITY OF, holds NPDES permit IL0027448, which discharges to Unnamed Trib To Big Creek North. EPA’s file records it issued April 25, 2019 and expiring March 31, 2024. 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	ALTAMONT SOUTH STP, CITY OF
Permittee as filed	ALTAMONT, CITY OF
NPDES ID	IL0027448
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	Publicly owned treatment works
Issued	April 25, 2019
Expiration date	March 31, 2024
Address	Altamont, IL 62411
Receiving water	UNNAMED TRIB TO BIG CREEK NORTH
Subwatershed	Big Creek (HUC 051201140402)
Program components on file	POTW, Pretreatment
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
4With 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
Oxygen, dissolved [DO]	5	14	14	August 31, 2015	58% over the limit
BOD, carbonaceous [5 day, 20 C]	4	9	9	August 31, 2015	30% over the limit
Solids, total suspended	5	4	4	September 30, 2014	93% over the limit
Nitrogen, ammonia total [as N]	16	10	2	April 30, 2016	18% over the limit
Flow, in conduit or thru treatment plant	4	0	0
pH	2	0	0
BOD, 5-day, 20 deg. C	1	0	0
Chlorine, total residual	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 IL0027448.

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 IL0027448 there.

Nearby on the register

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

This public-records page covers Clean Water Act discharge permit NPDES IL0027448, held by Altamont, City of, for the Altamont South STP, which discharges to Unnamed Trib To Big Creek North in the Big Creek watershed (HUC 051201140402). The permit is listed as administratively continued, with a permit status of Minor discharger class, 9 pollutants under a numeric limit, and 4 pollutants with an effluent exceedance.