Clean Water Act discharge permit · NPDES IL0022586

FLAGG CREEK WRD - MCELWAIN STP, Burr Ridge, IL: NPDES IL0022586 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MajorDischarger class
35Pollutants under a numeric limit
5Pollutants with an effluent exceedance

FLAGG CREEK WRD - MCELWAIN STP, held by FLAGG CREEK WATER RECLAMATION DISTRICT, holds NPDES permit IL0022586, which discharges to Flagg Creek. EPA’s file records it issued July 31, 2015 and expiring July 31, 2020. 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	FLAGG CREEK WRD - MCELWAIN STP
Permittee as filed	FLAGG CREEK WATER RECLAMATION DISTRICT
NPDES ID	IL0022586
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	July 31, 2015
Expiration date	July 31, 2020
Address	Burr Ridge, IL 60527
Receiving water	FLAGG CREEK
Receiving water impaired	303(D) Listed
Subwatershed	Flag Creek (HUC 071200040701)

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

Effluent limits and exceedances

42Pollutants on file
35Under a numeric limit
14With 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	2	39	39	June 30, 2026	99,999% over the limit
Chlorine, total residual	3	5	5	August 31, 2024	716% over the limit
Solids, total suspended	7	6	4	September 30, 2022	40% over the limit
Nitrogen, ammonia total [as N]	56	5	3	March 31, 2021	105% over the limit
Phosphorus, total [as P]	5	3	3	June 30, 2023	20% over the limit
Flow, in conduit or thru treatment plant	4	4	0
BOD, 5-day, 20 deg. C	3	2	0
Temperature, water deg. fahrenheit	0	2	0
Specific conductance	0	2	0
Alkalinity, total [as CaCO3]	0	2	0
Nitrogen, Kjeldahl, total [as N]	0	2	0
Nitrite + Nitrate total [as N]	0	2	0
Phosphorus, dissolved	0	2	0
Chloride [as Cl]	0	2	0
Oxygen, dissolved [DO]	5	0	0
pH	4	0	0
BOD, carbonaceous [5 day, 20 C]	4	0	0
Oil & Grease	2	0	0
Cyanide, total [as CN]	2	0	0
Cyanide, free [amenable to chlorination]	2	0	0
Fluoride, total [as F]	2	0	0
Arsenic, total [as As]	2	0	0
Barium, total [as Ba]	2	0	0
Beryllium, total [as Be]	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
Thallium, total [as Tl]	2	0	0
Nickel, total [as Ni]	2	0	0
Silver, total [as Ag]	2	0	0
Zinc, total [as Zn]	2	0	0
Antimony, total [as Sb]	2	0	0
Selenium, total [as Se]	2	0	0
Phenolics, total recoverable	2	0	0
Mercury, total [as Hg]	2	0	0
Nitrogen, total [as N]	1	0	0
Flow, total	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

20Single-event violations

Date	What EPA recorded	Agency
August 1, 2026	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
August 1, 2026	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
August 1, 2026	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
August 1, 2026	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
August 1, 2026	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
August 1, 2026	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
July 27, 2026	Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment	ST6
June 7, 2026	Wet-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 6, 2026	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
November 7, 2025	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
November 6, 2025	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
October 2, 2025	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
August 18, 2025	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
July 25, 2025	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
July 17, 2025	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
April 2, 2025	Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
February 27, 2025	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
January 21, 2025	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
November 11, 2024	Dry-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.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, IL0022586.

Start the watch

How we handle your data → Privacy

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 IL0022586 there.

Nearby on the register

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

The page covers the Clean Water Act discharge permit NPDES IL0022586 for the Flagg Creek WRD - McElwain STP in Burr Ridge, IL, held by Flagg Creek Water Reclamation District, with permit status administratively continued and a Major Discharger class. The figures listed are 35 pollutants under a numeric limit and 5 pollutants with an effluent exceedance.