Clean Water Act discharge permit · NPDES IL0021521

METAMORA SOUTH STP, VILLAGE OF, Metamora, IL: NPDES IL0021521 discharge permit, effluent exceedances, inspections, penalties

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

METAMORA SOUTH STP, VILLAGE OF, held by METAMORA, VILLAGE OF, holds NPDES permit IL0021521, which discharges to Walnut Creek. EPA’s file records it issued July 9, 2018 and expiring July 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	METAMORA SOUTH STP, VILLAGE OF
Permittee as filed	METAMORA, VILLAGE OF
NPDES ID	IL0021521
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	July 9, 2018
Expiration date	July 31, 2023
Address	Metamora, IL 61548
Receiving water	WALNUT CREEK
Subwatershed	Town of Metamora-Walnut Creek (HUC 071300040601)
Program components on file	Biosolids, 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
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
Oxygen, dissolved [DO]	5	85	48	July 31, 2025	73% over the limit
BOD, carbonaceous [5 day, 20 C]	4	155	15	May 31, 2006	300% over the limit
Solids, total suspended	5	179	14	February 29, 2004	77% over the limit
pH	2	74	6	May 31, 2026
Flow, in conduit or thru treatment plant	4	136	0
BOD, 5-day, 20 deg. C	1	34	0
Chlorine, total residual	1	33	0
Coliform, fecal general	1	8	0
Nitrogen, ammonia total [as N]	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 IL0021521.

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 IL0021521 there.

Nearby on the register

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

This public-records page covers the NPDES discharge permit IL0021521 held by Metamora, Village of, for the Metamora South STP in Metamora, IL, which discharges to Walnut Creek in the Town of Metamora-Walnut Creek watershed (HUC 071300040601). The page lists a permit status of administratively continued, a minor discharger class, 9 pollutants under a numeric limit, and 4 pollutants with an effluent exceedance.