Clean Water Act discharge permit · NPDES IN0040291

MARENGO MUNICIPAL WWTP, Marengo, IN: NPDES IN0040291 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
11Pollutants under a numeric limit
7Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

MARENGO MUNICIPAL WWTP holds NPDES permit IN0040291, which discharges to Blue R Via Whiskey Run Creek. EPA’s file records it issued June 24, 2016 and expiring September 30, 2021.

MARENGO MUNICIPAL WWTP, Marengo, Indiana: Individual permit IN0040291; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued June 24, 2016, term to September 30, 2021, by IDEM; discharges to BLUE R VIA WHISKEY RUN CREEK.

Solids, total suspended: 4 limits, 159 violations of any kind, 37 effluent exceedances, latest November 30, 2005, largest 496% over the limit.
E. coli, colony forming units [CFU]: 3 limits, 24 violations of any kind, 14 effluent exceedances, latest October 31, 2008, largest 1,219% over the limit.
Chlorine, total residual: 0 limits, 51 violations of any kind, 13 effluent exceedances, latest August 31, 2008, largest 100% over the limit.
Nitrogen, ammonia total [as N]: 8 limits, 102 violations of any kind, 6 effluent exceedances, latest November 30, 2005, largest 233% over the limit.
Oxygen, dissolved [DO]: 2 limits, 29 violations of any kind, 4 effluent exceedances, latest June 30, 2005, largest 30% over the limit.
BOD, 5-day, 20 deg. C: 0 limits, 31 violations of any kind, 3 effluent exceedances, latest December 31, 1996, largest 19% over the limit.
pH: 2 limits, 68 violations of any kind, 2 effluent exceedances, latest February 28, 2006.
BOD, carbonaceous [5 day, 20 C]: 4 limits, 100 violations of any kind, 0 effluent exceedances.
Flow, in conduit or thru treatment plant: 1 limit, 61 violations of any kind, 0 effluent exceedances.
Flow, wastewater by-passing trtmnt plant: 0 limits, 25 violations of any kind, 0 effluent exceedances.
Flow, total: 1 limit, 12 violations of any kind, 0 effluent exceedances.
Bypass valve: 0 limits, 3 violations of any kind, 0 effluent exceedances.
BOD, carb-5 day, 20 deg C, percent removal: 1 limit, 2 violations of any kind, 0 effluent exceedances.
Solids, suspended percent removal: 1 limit, 2 violations of any kind, 0 effluent exceedances.
Number of Events: 2 limits, 0 violations of any kind, 0 effluent exceedances.

Indiana holds 541 Publicly owned treatment works coverages of this permit type in EPA’s file; 18 were issued before IN0040291.

Coverages issued nearest IN0040291

May 11, 2016: ADVANCE WWTP, TOWN OF, Advance, IN0039705
May 11, 2016: LA OTTO REGIONAL SEWER DISTRICT, Laotto, IN0058611, held by LAOTTO REGIONAL SEWER DISTRICT
May 27, 2016: LACONIA MUNICIPAL WWTP, Laconia, IN0061239
June 17, 2016: EAST CHICAGO SANITARY DISTRICT, East Chicago, IN0022829, held by EAST CHICAGO SANITARY DISTRICT WWTP
June 24, 2016: GARRETT WWTP, Garrett, IN0022969
June 24, 2016: GREENVILLE WWTP, Greenville, IN0062553
July 8, 2016: CLINTON MUNICIPAL WWTP, Clinton, IN0022608
July 8, 2016: WINSLOW MUNICIPAL WWTP, Winslow, IN0040789
July 11, 2016: BERKSHIRE POINTE HCRSD WWTP, New Salisbury, IN0042005, held by BERKSHIRE POINTE HCRSD NEW SALISBURY
August 5, 2016: WINAMAC WWTP, Winamac, IN0020516

MARENGO MUNICIPAL WWTP among its neighbors

EPA’s permit file holds 2 discharge permits in the Whiskey Run subwatershed (HUC 051401040804), IN0040291 among them. Its county holds 18, 0 of them major permits; IN0040291 is a minor permit.

Other permits in the Whiskey Run subwatershed (HUC 051401040804)

MARENGO WAREHOUSE & DISTRIBUTION CENTER, Marengo: IN0063941, minor permit, discharging to UNT TO BRANDYWINE FORK, permit term to September 30, 2022

Identity

Facility as filed	MARENGO MUNICIPAL WWTP
Permittee as filed	MARENGO MUNICIPAL WWTP
NPDES ID	IN0040291
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	June 24, 2016
Expiration date	September 30, 2021
Issuing agency	IDEM
Address	Marengo, IN 47140
Receiving water	BLUE R VIA WHISKEY RUN CREEK
Subwatershed	Whiskey Run (HUC 051401040804)
SIC	4952 – Sewerage Systems

Effluent limits and exceedances

15Pollutants on file
11Under a numeric limit
14With 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
Solids, total suspended	4	159	37	November 30, 2005	496% over the limit
E. coli, colony forming units [CFU]	3	24	14	October 31, 2008	1,219% over the limit
Chlorine, total residual	0	51	13	August 31, 2008	100% over the limit
Nitrogen, ammonia total [as N]	8	102	6	November 30, 2005	233% over the limit
Oxygen, dissolved [DO]	2	29	4	June 30, 2005	30% over the limit
BOD, 5-day, 20 deg. C	0	31	3	December 31, 1996	19% over the limit
pH	2	68	2	February 28, 2006
BOD, carbonaceous [5 day, 20 C]	4	100	0
Flow, in conduit or thru treatment plant	1	61	0
Flow, wastewater by-passing trtmnt plant	0	25	0
Flow, total	1	12	0
Bypass valve	0	3	0
BOD, carb-5 day, 20 deg C, percent removal	1	2	0
Solids, suspended percent removal	1	2	0
Number of Events	2	0	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IN0040291.

Inspections

EPA’s inspection file holds no inspection for NPDES IN0040291.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES IN0040291.

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

This public-records page covers Clean Water Act discharge permit NPDES IN0040291 for MARENGO MUNICIPAL WWTP in Marengo, IN, which discharges to Blue R Via Whiskey Run Creek within the Whiskey Run subwatershed (HUC 051401040804). The page lists the permit as administratively continued, a Minor discharger class, with 11 pollutants under a numeric limit and 7 pollutants with an effluent exceedance.