Clean Water Act discharge permit · NPDES IL0030023

MOUNT CARMEL STP, CITY OF, Mount Carmel, IL: NPDES IL0030023 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MajorDischarger class
32Pollutants under a numeric limit
5Pollutants with an effluent exceedance

MOUNT CARMEL STP, CITY OF, held by MOUNT CARMEL, CITY OF, holds NPDES permit IL0030023, which discharges to Wabash River. EPA’s file records it issued November 21, 2014 and expiring November 30, 2019. 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	MOUNT CARMEL STP, CITY OF
Permittee as filed	MOUNT CARMEL, CITY OF
NPDES ID	IL0030023
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 21, 2014
Expiration date	November 30, 2019
Address	Mount Carmel, IL 62863
Receiving water	WABASH RIVER
Receiving water impaired	303(D) Listed
Subwatershed	Greathouse Creek-Wabash River (HUC 051201130304)

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

Effluent limits and exceedances

32Pollutants on file
32Under a numeric limit
32With 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
Nitrogen, ammonia total [as N]	8	72	44	June 30, 2021	525% over the limit
Coliform, fecal general	2	21	11	July 31, 2022	8,150% over the limit
Solids, total suspended	9	78	6	January 31, 2018	73% over the limit
pH	4	35	3	February 28, 2021
Chlorine, total residual	3	23	3	February 28, 2022	56% over the limit
BOD, 5-day, 20 deg. C	9	72	0
Flow, in conduit or thru treatment plant	4	32	0
Phosphorus, total [as P]	3	31	0
Flow, total	2	16	0
Nitrogen, total [as N]	1	15	0
Nitrogen, nitrate total [as N]	1	15	0
Oxygen, dissolved [DO]	1	8	0
Mercury, total [as Hg]	1	4	0
Oil & Grease	1	2	0
Cyanide, weak acid, dissociable	1	2	0
Cyanide, total [as CN]	1	2	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
Silver, total [as Ag]	1	2	0
Zinc, total [as Zn]	1	2	0
Selenium, total [as Se]	1	2	0
Phenolics, total recoverable	1	2	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

21Single-event violations

Date	What EPA recorded	Agency
June 27, 2026	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
June 27, 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 26, 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, no discharge to waters of the U.S., that may endanger health or the environment	ST6
June 25, 2026	Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment	ST6
June 25, 2026	Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment	ST6
June 25, 2026	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
June 25, 2026	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
June 21, 2026	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
March 31, 2026	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
March 15, 2026	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
March 12, 2026	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
March 11, 2026	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
April 5, 2025	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
April 3, 2025	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
February 15, 2025	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
December 29, 2024	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
December 29, 2024	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
December 16, 2024	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
December 16, 2024	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	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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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.