Clean Water Act discharge permit · NPDES IL0031291

SYCAMORE NORTH STP, CITY OF, Sycamore, IL: NPDES IL0031291 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MajorDischarger class
38Pollutants under a numeric limit
5Pollutants with an effluent exceedance

SYCAMORE NORTH STP, CITY OF, held by SYCAMORE, CITY OF, holds NPDES permit IL0031291, which discharges to East Branch Of The South Branch Of Kishwaukee Rivr. EPA’s file records it issued September 28, 2016 and expiring September 30, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	SYCAMORE NORTH STP, CITY OF
Permittee as filed	SYCAMORE, CITY OF
NPDES ID	IL0031291
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Major discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	September 28, 2016
Expiration date	September 30, 2021
Address	Sycamore, IL 60178
Receiving water	EAST BRANCH OF THE SOUTH BRANCH OF KISHWAUKEE RIVR
Subwatershed	East Branch Kishwaukee River (HUC 070900060504)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

38Pollutants on file
38Under a numeric limit
13With a violation of any kind
5With 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
Coliform, fecal general	3	27	23	May 31, 2020	107,192% over the limit
Solids, total suspended	12	13	10	March 31, 2019	253% over the limit
Chlorine, total residual	5	13	9	August 31, 2020	820% over the limit
BOD, 5-day, 20 deg. C	4	8	5	May 31, 2016	200% over the limit
Nitrogen, ammonia total [as N]	35	19	1	April 30, 2010	3% over the limit
Zinc, total [as Zn]	2	8	0
pH	6	6	0
BOD, carbonaceous [5 day, 20 C]	8	4	0
Phosphorus, total [as P]	10	3	0
Flow, in conduit or thru treatment plant	6	2	0
Nitrogen, total [as N]	2	2	0
Oil & Grease	2	1	0
Flow, total	2	1	0
Oxygen, dissolved [DO]	12	0	0
Temperature, water deg. fahrenheit	2	0	0
Alkalinity, total [as CaCO3]	2	0	0
Nitrogen, Kjeldahl, total [as N]	2	0	0
Nitrite + Nitrate total [as N]	2	0	0
Phosphorus, dissolved	2	0	0
Cyanide, weak acid, dissociable	2	0	0
Cyanide, total [as CN]	2	0	0
Fluoride, total [as F]	2	0	0
Arsenic, total [as As]	2	0	0
Barium, total [as Ba]	2	0	0
Cadmium, total [as Cd]	2	0	0
Chromium, hexavalent [as Cr]	2	0	0
Chromium, total [as Cr]	2	0	0
Copper, total [as Cu]	2	0	0
Iron, total [as Fe]	2	0	0
Iron, dissolved [as Fe]	2	0	0
Lead, total [as Pb]	2	0	0
Manganese, total [as Mn]	2	0	0
Nickel, total [as Ni]	2	0	0
Silver, total [as Ag]	2	0	0
Selenium, total [as Se]	2	0	0
Phenolics, total recoverable	2	0	0
Specific conductance [umho/cm]	2	0	0
Mercury, total [as Hg]	2	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 IL0031291.

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 IL0031291 there.

Nearby on the register

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