Clean Water Act discharge permit · NPDES IL0029688

MACOMB STP, CITY OF, Macomb, IL: NPDES IL0029688 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MajorDischarger class
32Pollutants under a numeric limit
7Pollutants with an effluent exceedance

MACOMB STP, CITY OF, held by MACOMB. CITY OF, holds NPDES permit IL0029688, which discharges to Kiljordan Creek. EPA’s file records it issued November 30, 2010 and expiring November 30, 2015. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	MACOMB STP, CITY OF
Permittee as filed	MACOMB. CITY OF
NPDES ID	IL0029688
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	November 30, 2010
Expiration date	November 30, 2015
Address	Macomb, IL 61455
Receiving water	KILJORDAN CREEK
Subwatershed	Wigwam Hollow-East Fork La Moine River (HUC 071300100305)

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

Effluent limits and exceedances

32Pollutants on file
32Under a numeric limit
26With a violation of any kind
7With 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	91	87	June 30, 2026	30,150% over the limit
Solids, total suspended	7	42	32	June 30, 2026	2,027% over the limit
Nitrogen, ammonia total [as N]	48	15	6	June 30, 2024	103% over the limit
Chlorine, total residual	3	11	5	July 31, 2025	87% over the limit
BOD, 5-day, 20 deg. C	3	6	4	November 30, 2009	240% over the limit
BOD, carbonaceous [5 day, 20 C]	4	13	1	July 31, 2019	7% over the limit
pH	6	7	1	April 30, 2024
Flow, in conduit or thru treatment plant	4	7	0
Oxygen, dissolved [DO]	5	6	0
Phosphorus, total [as P]	1	5	0
Flow, total	2	4	0
Nitrogen, total [as N]	1	3	0
Silver, total [as Ag]	1	3	0
Fluoride, total [as F]	1	2	0
Arsenic, total [as As]	1	2	0
Barium, total [as Ba]	1	2	0
Cadmium, total [as Cd]	1	2	0
Chromium, hexavalent [as Cr]	1	2	0
Chromium, total [as Cr]	1	2	0
Copper, total [as Cu]	1	2	0
Iron, total [as Fe]	1	2	0
Iron, dissolved [as Fe]	1	2	0
Lead, total [as Pb]	1	2	0
Manganese, total [as Mn]	1	2	0
Nickel, total [as Ni]	1	2	0
Zinc, total [as Zn]	1	2	0
Oil & Grease	1	0	0
Cyanide, weak acid, dissociable	1	0	0
Cyanide, total [as CN]	1	0	0
Selenium, total [as Se]	1	0	0
Phenolics, total recoverable	1	0	0
Mercury, total [as Hg]	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

11Single-event violations

Date	What EPA recorded	Agency
August 26, 2026	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
August 15, 2026	Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment	ST6
August 15, 2026	Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment	ST6
August 15, 2026	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
August 15, 2026	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
June 26, 2026	Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment	ST6
June 11, 2026	Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment	ST6
February 9, 2026	Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment	ST6
July 29, 2025	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
May 20, 2025	Wet-weather SSO discharge to waters of the U.S., not permit compliant, no endangerment	ST6
March 20, 2025	Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment	ST6

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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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.