Clean Water Act discharge permit · NPDES IN0039331

DYER WASTEWATER TREATMENT PLANT, Dyer, IN: NPDES IN0039331 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MajorDischarger class
15Pollutants under a numeric limit
8Pollutants with an effluent exceedance

DYER WASTEWATER TREATMENT PLANT holds NPDES permit IN0039331, which discharges to Dam/Little Calumet/Hart Dit/Plum Cr. EPA’s file records it issued August 2, 2018 and expiring October 31, 2023. 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	DYER WASTEWATER TREATMENT PLANT
Permittee as filed	DYER WASTEWATER TREATMENT PLANT
NPDES ID	IN0039331
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	August 2, 2018
Expiration date	October 31, 2023
Issuing agency	IDEM
Address	Dyer, IN 46311
Receiving water	DAM/LITTLE CALUMET/HART DIT/PLUM CR
Receiving water impaired	303(D) Listed
Subwatershed	Plum Creek-Hart Ditch (HUC 071200030304)
Program components on file	Biosolids, POTW
NAICS	221320 – Sewage Treatment Facilities
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

17Pollutants on file
15Under a numeric limit
11With a violation of any kind
8With 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	38	30	October 31, 2024	275% over the limit
Solids, total suspended	8	28	20	January 31, 2023	423% over the limit
Phosphorus, total [as P]	2	17	12	September 30, 2021	90% over the limit
Oxygen, dissolved [DO]	2	10	8	October 31, 2021	40% over the limit
BOD, carbonaceous [5 day, 20 C]	8	14	6	October 31, 2021	85% over the limit
E. coli, colony forming units [CFU]	3	6	6	May 31, 2020	4,439% over the limit
Chlorine, total residual	2	3	3	May 31, 2013	83% over the limit
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia	0	1	1	January 31, 1999	16% over the limit
pH	2	4	0
Flow, in conduit or thru treatment plant	1	4	0
Flow, wastewater by-passing trtmnt plant	0	2	0
Number of Events	2	0	0
Toxicity [acute], Ceriodaphnia dubia	1	0	0
Toxicity [chronic], Ceriodaphnia dubia	1	0	0
Toxicity [acute], Pimephales promelas [Fathead Minnow]	1	0	0
Toxicity [chronic], Pimephales promelas [Fathead Minnow]	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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IN0039331.

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

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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 IN0039331 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 IN0039331 for the DYER WASTEWATER TREATMENT PLANT in Dyer, IN, which is administratively continued as a Major Discharger and lists 15 pollutants under a numeric limit and 8 pollutants with an effluent exceedance. The permit, issued August 2, 2018 and expiring October 31, 2023, discharges to DAM/LITTLE CALUMET/HART DIT/PLUM CR within HUC 071200030304.