Clean Water Act discharge permit · NPDES IL0041131

BLUE MOUND STP, VILLAGE OF, Blue Mound, IL: NPDES IL0041131 discharge permit, effluent exceedances, inspections, penalties

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

BLUE MOUND STP, VILLAGE OF, held by BLUE MOUND.VILLAGE OF, holds NPDES permit IL0041131, which discharges to Unnamed Tributary Of Mosquito Creek. EPA’s file records it issued July 15, 2021 and expiring July 31, 2026. 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	BLUE MOUND STP, VILLAGE OF
Permittee as filed	BLUE MOUND.VILLAGE OF
NPDES ID	IL0041131
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	July 15, 2021
Expiration date	July 31, 2026
Address	Blue Mound, IL 62513
Receiving water	UNNAMED TRIBUTARY OF MOSQUITO CREEK
Subwatershed	Spring Creek-Mosquito Creek (HUC 071300060601)
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

11Pollutants on file
10Under a numeric limit
11With 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
Oxygen, dissolved [DO]	5	331	170	August 31, 2023	99,999% over the limit
Chloride [as Cl]	2	165	43	January 31, 2021	96% over the limit
Solids, total suspended	5	330	24	May 31, 2024	288% over the limit
BOD, carbonaceous [5 day, 20 C]	4	263	15	January 31, 2019	220% over the limit
Solids, total dissolved	0	16	12	September 30, 2009	48% over the limit
Chlorine, total residual	1	71	3	November 30, 2023	999,900% over the limit
Flow, in conduit or thru treatment plant	4	248	0
pH	2	124	0
BOD, 5-day, 20 deg. C	1	56	0
Nitrogen, ammonia total [as N]	1	48	0
Coliform, fecal general	1	22	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 IL0041131.

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 IL0041131 there.

Nearby on the register

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

This public-records page covers Clean Water Act discharge permit NPDES IL0041131 for BLUE MOUND STP, VILLAGE OF in Blue Mound, IL, a publicly owned treatment works classed as a minor discharger, listed as administratively continued. The page lists 10 as the discharger class, 6 pollutants under a numeric limit, and 6 pollutants with an effluent exceedance, with the permit covering Biosolids and POTW program components.