Clean Water Act discharge permit · NPDES IN0022969

GARRETT WWTP, Garrett, IN: NPDES IN0022969 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MajorDischarger class
25Pollutants under a numeric limit
12Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

GARRETT WWTP holds NPDES permit IN0022969, which discharges to Lake Erie Via Cedar Cr Via Garrett City Ditch. EPA’s file records it issued June 24, 2016 and expiring October 31, 2021.

GARRETT WWTP, Garrett, Indiana: Individual permit IN0022969; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued June 24, 2016, term to October 31, 2021, by IDEM; discharges to LAKE ERIE VIA CEDAR CR VIA GARRETT CITY DITCH.

Nitrogen, ammonia total [as N]: 8 limits, 250 violations of any kind, 228 effluent exceedances, latest April 30, 2026, largest 1,780% over the limit.
Solids, total suspended: 4 limits, 207 violations of any kind, 197 effluent exceedances, latest April 30, 2026, largest 928% over the limit.
Chlorine, total residual: 0 limits, 163 violations of any kind, 158 effluent exceedances, latest October 31, 2003, largest 400% over the limit.
BOD, 5-day, 20 deg. C: 0 limits, 160 violations of any kind, 152 effluent exceedances, latest February 28, 2002, largest 88% over the limit.
Oxygen, dissolved [DO]: 2 limits, 40 violations of any kind, 35 effluent exceedances, latest January 31, 2005, largest 85% over the limit.
Phosphorus, total [as P]: 1 limit, 35 violations of any kind, 28 effluent exceedances, latest June 30, 2023, largest 500% over the limit.
BOD, carbonaceous [5 day, 20 C]: 4 limits, 34 violations of any kind, 27 effluent exceedances, latest April 30, 2026, largest 67% over the limit.
Mercury, total recoverable: 4 limits, 24 violations of any kind, 23 effluent exceedances, latest April 30, 2026, largest 361% over the limit.
E. coli, colony forming units [CFU]: 3 limits, 10 violations of any kind, 10 effluent exceedances, latest May 31, 2026, largest 930% over the limit.
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia: 0 limits, 8 violations of any kind, 8 effluent exceedances, latest August 31, 2011, largest 88% over the limit.
Phosphorus, total percent removal: 1 limit, 11 violations of any kind, 5 effluent exceedances, latest March 31, 2023, largest 353% over the limit.
Toxicity [chronic], Ceriodaphnia dubia: 3 limits, 9 violations of any kind, 1 effluent exceedance, latest November 30, 2022, largest 100% over the limit.
Flow, in conduit or thru treatment plant: 1 limit, 15 violations of any kind, 0 effluent exceedances.
Toxicity [acute], Ceriodaphnia dubia: 3 limits, 8 violations of any kind, 0 effluent exceedances.
Toxicity [acute], Pimephales promelas [Fathead Minnow]: 3 limits, 8 violations of any kind, 0 effluent exceedances.
Toxicity [chronic], Pimephales promelas [Fathead Minnow]: 3 limits, 8 violations of any kind, 0 effluent exceedances.
pH: 2 limits, 8 violations of any kind, 0 effluent exceedances.
Flow, wastewater by-passing trtmnt plant: 0 limits, 3 violations of any kind, 0 effluent exceedances.
Flow, total: 1 limit, 1 violation of any kind, 0 effluent exceedances.
Nitrogen, total [as N]: 0 limits, 1 violation of any kind, 0 effluent exceedances.
Copper, dry weight: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Cadmium, dry weight: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Number of Events: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Molybdenum, sludge, total, dry weight [as Mo]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Zinc, sludge, total, dry weight [as Zn]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Lead, sludge, total, dry weight [as Pb]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Nickel, sludge, total, dry weight [as Ni]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Mercury, sludge, total, dry weight [as Hg]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
BOD, carb-5 day, 20 deg C, percent removal: 1 limit, 0 violations of any kind, 0 effluent exceedances.
Solids, suspended percent removal: 1 limit, 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 IN0022969. GARRETT WWTP holds 2 permits in Indiana.

Other permits held by GARRETT WWTP

GARRETT WWTP, Garrett: INL022969, issued January 1, 2021

Coverages issued nearest IN0022969

May 11, 2016: ARCADIA WWTP, TOWN OF, Arcadia, IN0021334
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: MARENGO MUNICIPAL WWTP, Marengo, IN0040291
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

GARRETT WWTP among its neighbors

EPA’s permit file holds 29 discharge permits in the Dosch Ditch-Cedar Creek subwatershed (HUC 041000030707), IN0022969 among them. Its county holds 78, 3 of them major permits; IN0022969 is a major permit.

Other permits in the Dosch Ditch-Cedar Creek subwatershed (HUC 041000030707)

ALLENDALE TREATMENT - AUBURN, Auburn: INRA14416, minor permit, permit term to August 11, 2029
AUBURN DEKALB AIRPORT THREE 6-UNIT HANGARS, Auburn: INRA17014, minor permit, permit term to October 16, 2030
AUBURN-DEKALB AIRPORT RECONSTRUCT RUNWAY, Auburn: INRA18196, minor permit, permit term to May 20, 2031
BEAR CREEK ESTATES SECTION 8, Auburn: INRA04226, minor permit, permit term to September 26, 2024
BEAR CREEK ESTATES SECTION 9, Auburn: INRA08547, minor permit, permit term to September 16, 2026
CEDAR CREEK TRAIL HURST, Leo: INRA13291, minor permit, permit term to March 5, 2029
CENTURION INDUSTRIES INCORPORATED, Garrett: INRM03042, minor permit, discharging to Diehl Ditch, permit term to February 11, 2029
CR 48 - CR 19 SANITARY SEWER AND WATER MAIN EXTENSION, Auburn: INRA13144, minor permit, permit term to January 16, 2029
EAGLE ROCK SCCTION IV, Fort Wayne: INRA12294, minor permit, permit term to August 10, 2028
EARLY FORD, Auburn: INRA09360, minor permit, permit term to March 21, 2027

Identity

Facility as filed	GARRETT WWTP
Permittee as filed	GARRETT WWTP
NPDES ID	IN0022969
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	June 24, 2016
Expiration date	October 31, 2021
Issuing agency	IDEM
Address	Garrett, IN 46738
Receiving water	LAKE ERIE VIA CEDAR CR VIA GARRETT CITY DITCH
Subwatershed	Dosch Ditch-Cedar Creek (HUC 041000030707)
Program components on file	POTW, Pretreatment
SIC	4952 – Sewerage Systems

Effluent limits and exceedances

30Pollutants on file
25Under a numeric limit
20With a violation of any kind
12With 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	250	228	April 30, 2026	1,780% over the limit
Solids, total suspended	4	207	197	April 30, 2026	928% over the limit
Chlorine, total residual	0	163	158	October 31, 2003	400% over the limit
BOD, 5-day, 20 deg. C	0	160	152	February 28, 2002	88% over the limit
Oxygen, dissolved [DO]	2	40	35	January 31, 2005	85% over the limit
Phosphorus, total [as P]	1	35	28	June 30, 2023	500% over the limit
BOD, carbonaceous [5 day, 20 C]	4	34	27	April 30, 2026	67% over the limit
Mercury, total recoverable	4	24	23	April 30, 2026	361% over the limit
E. coli, colony forming units [CFU]	3	10	10	May 31, 2026	930% over the limit
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia	0	8	8	August 31, 2011	88% over the limit
Phosphorus, total percent removal	1	11	5	March 31, 2023	353% over the limit
Toxicity [chronic], Ceriodaphnia dubia	3	9	1	November 30, 2022	100% over the limit
Flow, in conduit or thru treatment plant	1	15	0
Toxicity [acute], Ceriodaphnia dubia	3	8	0
Toxicity [acute], Pimephales promelas [Fathead Minnow]	3	8	0
Toxicity [chronic], Pimephales promelas [Fathead Minnow]	3	8	0
pH	2	8	0
Flow, wastewater by-passing trtmnt plant	0	3	0
Flow, total	1	1	0
Nitrogen, total [as N]	0	1	0
Copper, dry weight	2	0	0
Cadmium, dry weight	2	0	0
Number of Events	2	0	0
Molybdenum, sludge, total, dry weight [as Mo]	2	0	0
Zinc, sludge, total, dry weight [as Zn]	2	0	0
Lead, sludge, total, dry weight [as Pb]	2	0	0
Nickel, sludge, total, dry weight [as Ni]	2	0	0
Mercury, sludge, total, dry weight [as Hg]	2	0	0
BOD, carb-5 day, 20 deg C, percent removal	1	0	0
Solids, suspended percent removal	1	0	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IN0022969.

Inspections

EPA’s inspection file holds no inspection for NPDES IN0022969.

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 IN0022969.

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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 IN0022969 for GARRETT WWTP in Garrett, IN, a major discharger classed as a publicly owned treatment works, now administratively continued. The page lists 25 pollutants under a numeric limit and 12 pollutants with an effluent exceedance, with the permit's issue and expiration dates as recorded in EPA's file.