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Garrett WWTP

Sewage treatment plant, major discharger, Garrett, Indiana. NPDES permit IN0022969 expired Oct 31, 2026. Last 12 months: over a limit 15 times (last August 2026), 4 required values missing, 3 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (24 values), form TS twice a year (4 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
11 values over a limit, 21 required values missing, 7 of 18 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

All 15 values over a limit
Period endingParameterReportedLimitOver by
October 2025Mercury, total recoverable, rolling average5.2133 ng/L≤ 1.9 ng/L174%
October 2025Nitrogen, ammonia total [as N], daily maximum34.56 lb/d≤ 34 lb/d2%
October 2025Nitrogen, ammonia total [as N], daily maximum6.01 mg/L≤ 3.4 mg/L77%
December 2025Mercury, total recoverable, rolling average4.3833 ng/L≤ 1.9 ng/L131%
February 2026Mercury, total recoverable, rolling average3.185 ng/L≤ 1.9 ng/L67%
March 2026Nitrogen, ammonia total [as N], daily maximum46.04 lb/d≤ 36 lb/d28%
April 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average190.8 lb/d≤ 150 lb/d27%
April 2026E. coli, colony forming units [CFU], daily maximum1011 CFU/100mL≤ 235 CFU/100mL330%
April 2026Mercury, total recoverable, rolling average3.185 ng/L≤ 1.9 ng/L67%
April 2026Nitrogen, ammonia total [as N], daily maximum49.26 lb/d≤ 36 lb/d37%
April 2026Solids, total suspended, monthly average150.8 lb/d≤ 120 lb/d26%
April 2026Solids, total suspended, maximum weekly average417.8 lb/d≤ 180 lb/d132%
May 2026E. coli, colony forming units [CFU], daily maximum755.6 CFU/100mL≤ 235 CFU/100mL222%
May 2026E. coli, colony forming units [CFU], monthly geometric mean524.7 CFU/100mL≤ 125 CFU/100mL320%
August 2026E. coli, colony forming units [CFU], daily maximum2420 CFU/100mL≤ 235 CFU/100mL930%

Limits in force (79)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily average minimum≥ 6 mg/LMay–Nov001
Oxygen, dissolved [DO]daily average minimum≥ 5 mg/LJan, Feb, Mar, Apr, Dec001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 12 mg/Lall year001
Solids, total suspendedmaximum weekly average≤ 18 mg/Lall year001
Solids, total suspendedmonthly average≤ 120 lb/dall year001
Solids, total suspendedmaximum weekly average≤ 180 lb/dall year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]monthly averagereport only (lb/d)all year001
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 1.6 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 3.4 mg/LMay–Nov001
Nitrogen, ammonia total [as N]daily maximum≤ 3.6 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 15 lb/dMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 16 lb/dJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 34 lb/dMay–Nov001
Nitrogen, ammonia total [as N]daily maximum≤ 36 lb/dJan, Feb, Mar, Apr, Dec001
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year001
Phosphorus, total [as P]monthly averagereport only (lb/d)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
E. coli, colony forming units [CFU]monthly geometric mean≤ 125 CFU/100mLApr–Oct001
E. coli, colony forming units [CFU]daily maximum≤ 235 CFU/100mLApr–Oct001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteNov001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteNov001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteNov001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteMar, Sep001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteApr, Oct001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteApr, Oct001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteApr, Oct001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1 tox chronicNov001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1 tox chronicNov001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1 tox chronicNov001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1 tox chronicMar, Sep001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1 tox chronicApr, Oct001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1 tox chronicApr, Oct001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1 tox chronicApr, Oct001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteNov001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteNov001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteNov001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteMar, Sep001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteApr, Oct001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteApr, Oct001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteApr, Oct001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox chronicNov001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox chronicNov001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox chronicNov001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox chronicMar, Sep001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox chronicApr, Oct001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox chronicApr, Oct001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox chronicApr, Oct001
Mercury, total recoverablerolling average≤ 1.9 ng/LFeb, Apr, Jun, Aug, Oct, Dec001
Mercury, total recoverablerolling average≤ 1.9 ng/LFeb, Apr, Jun, Aug, Oct, Dec001
Mercury, total recoverabledaily maximumreport only (ng/L)Feb, Apr, Jun, Aug, Oct, Dec001
Mercury, total recoverabledaily maximumreport only (ng/L)Feb, Apr, Jun, Aug, Oct, Dec001
Mercury, total recoverabledaily maximumreport only (lb/d)Feb, Apr, Jun, Aug, Oct, Dec001
Mercury, total recoverabledaily maximumreport only (ng/L)Feb, Apr, Jun, Aug, Oct, Dec001
Mercury, total recoverabledaily maximumreport only (ng/L)Feb, Apr, Jun, Aug, Oct, Dec001
Mercury, total recoverabledaily maximumreport only (lb/d)Feb, Apr, Jun, Aug, Oct, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 15 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 100 lb/dall year001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 150 lb/dall year001
Phosphorus, total percent removalmonthly average minimum≥ 80 %all year001
Flow, totalmonthly totalreport only (Mgal/mo)all year001
Copper, dry weightvaluereport only (mg/kg)Jun, DecPRT
Copper, dry weightvaluereport only (mg/kg)Jun, DecPRT
Cadmium, dry weightvaluereport only (mg/kg)Jun, DecPRT
Cadmium, dry weightvaluereport only (mg/kg)Jun, DecPRT
Molybdenum, sludge, total, dry weight [as Mo]valuereport only (mg/kg)Jun, DecPRT
Molybdenum, sludge, total, dry weight [as Mo]valuereport only (mg/kg)Jun, DecPRT
Zinc, sludge, total, dry weight [as Zn]valuereport only (mg/kg)Jun, DecPRT
Zinc, sludge, total, dry weight [as Zn]valuereport only (mg/kg)Jun, DecPRT
Lead, sludge, total, dry weight [as Pb]valuereport only (mg/kg)Jun, DecPRT
Lead, sludge, total, dry weight [as Pb]valuereport only (mg/kg)Jun, DecPRT
Nickel, sludge, total, dry weight [as Ni]valuereport only (mg/kg)Jun, DecPRT
Nickel, sludge, total, dry weight [as Ni]valuereport only (mg/kg)Jun, DecPRT
Mercury, sludge, total, dry weight [as Hg]valuereport only (mg/kg)Jun, DecPRT
Mercury, sludge, total, dry weight [as Hg]valuereport only (mg/kg)Jun, DecPRT

How strict are these limits?

Cited limits by parameter: Indiana's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IN0022969 · MCP: https://passage-data.com/mcp