Clean Water Act discharge permit · NPDES IL0020206

NOKOMIS STP, CITY OF, Nokomis, IL: NPDES IL0020206 discharge permit, effluent exceedances, inspections, penalties

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

NOKOMIS STP, CITY OF, held by NOKOMIS, CITY OF, holds NPDES permit IL0020206, which discharges to Unnamed Trib Of E Fork Shoal Creek. EPA’s file records it issued September 15, 2015 and expiring September 30, 2020. 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	NOKOMIS STP, CITY OF
Permittee as filed	NOKOMIS, CITY OF
NPDES ID	IL0020206
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	September 15, 2015
Expiration date	September 30, 2020
Address	Nokomis, IL 62075
Receiving water	UNNAMED TRIB OF E FORK SHOAL CREEK
Subwatershed	Town of Nokomis-East Fork Shoal Creek (HUC 071402030301)
Program components on file	Biosolids, POTW
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
Nitrogen, ammonia total [as N]	41	247	212	February 28, 2026	1,167% over the limit
Solids, total suspended	8	51	14	November 30, 2025	42% over the limit
BOD, carbonaceous [5 day, 20 C]	4	11	7	February 28, 2025	310% over the limit
Oxygen, dissolved [DO]	7	31	6	February 28, 2021	57% over the limit
BOD, 5-day, 20 deg. C	4	35	2	February 28, 2025	25% over the limit
pH	4	28	2	October 31, 2023
Flow, total	2	19	0
Chlorine, total residual	2	14	0
Coliform, fecal general	2	9	0
Flow, in conduit or thru treatment plant	4	8	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 IL0020206.

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 IL0020206 there.

Nearby on the register

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

This public-records page covers NPDES permit IL0020206 held by NOKOMIS, CITY OF for the NOKOMIS STP, CITY OF facility in Nokomis, IL, a Minor discharger class publicly owned treatment works with an administratively continued status. The facts list 10 pollutants under a numeric limit and 6 pollutants with an effluent exceedance, and the permit's issue and expiration dates are September 15, 2015 and September 30, 2020.