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Greenfield WWTP

Sewage treatment plant, major discharger, Greenfield, Indiana. NPDES permit IN0020109, in force until Nov 30, 2029. Last 12 months: over a limit 8 times (last June 2026), 2 of 18 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (39 values), form AQ quarterly (12 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
16 values over a limit, 4 required values missing, 4 of 19 reports late

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

Period endingParameterReportedLimitOver by
March 2026Phosphorus, total [as P], monthly average1.06 mg/L≤ 1 mg/L6%
March 2026Solids, total suspended, monthly average13.8 mg/L≤ 12 mg/L15%
March 2026Solids, total suspended, monthly average1605.6 lb/d≤ 800 lb/d101%
March 2026Solids, total suspended, weekly average48.39 mg/L≤ 18 mg/L169%
March 2026Solids, total suspended, weekly average6669.3 lb/d≤ 1200 lb/d456%
April 2026Phosphorus, total [as P], monthly average2.01 mg/L≤ 1 mg/L101%
June 2026E. coli, colony forming units [CFU], daily maximum501 CFU/100mL≤ 235 CFU/100mL113%
June 2026Phosphorus, total [as P], monthly average1.1 mg/L≤ 1 mg/L10%

Limits in force (77)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 6 mg/Lall year001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 12 mg/Lall year001
Solids, total suspendedweekly average≤ 18 mg/Lall year001
Solids, total suspendedmonthly average≤ 800 lb/dall year001
Solids, total suspendedweekly average≤ 1200 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≤ 1.1 mg/LMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 1.6 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 1.6 mg/LMay–Nov001
Nitrogen, ammonia total [as N]weekly average≤ 2.4 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 73 lb/dMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 110 lb/dJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 110 lb/dMay–Nov001
Nitrogen, ammonia total [as N]weekly average≤ 160 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
Cyanide, free [as free]monthly averagereport only (mg/L)all year001
Cyanide, free [as free]daily maximumreport only (mg/L)all year001
Cyanide, free [as free]monthly averagereport only (mg/L)all year001
Cyanide, free [as free]daily maximumreport only (mg/L)all year001
Nickel, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Nickel, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Nickel, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Nickel, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Zinc, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Zinc, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Zinc, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Zinc, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Cadmium, total recoverablemonthly averagereport only (mg/L)all year001
Cadmium, total recoverabledaily maximumreport only (mg/L)all year001
Cadmium, total recoverablemonthly averagereport only (mg/L)all year001
Cadmium, total recoverabledaily maximumreport only (mg/L)all year001
Lead, total recoverablemonthly averagereport only (mg/L)all year001
Lead, total recoverabledaily maximumreport only (mg/L)all year001
Lead, total recoverablemonthly averagereport only (mg/L)all year001
Lead, total recoverabledaily maximumreport only (mg/L)all year001
Chromium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Chromium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Chromium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Chromium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Copper, total recoverablemonthly averagereport only (mg/L)all year001
Copper, total recoverabledaily maximumreport only (mg/L)all year001
Copper, total recoverablemonthly averagereport only (mg/L)all year001
Copper, total recoverabledaily maximumreport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
E. coli, colony forming units [CFU]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 acuteDec001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1 tox chronicNov001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1 tox chronicDec001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteNov001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteDec001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox chronicNov001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox chronicDec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 670 lb/dall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 1000 lb/dall 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

New limits from Jan 1, 2027

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Cyanide, free [as free], monthly average0.0043 mg/Lnew0.005 mg/L (11 values, 1 below detection)1.16×
Cadmium, total recoverable, daily maximum0.0032 mg/Lnew0.00005 mg/L (11 values)0.0156×
Cadmium, total recoverable, monthly average0.0016 mg/Lnew0.00005 mg/L (11 values)0.0312×
Cyanide, free [as free], daily maximum0.0085 mg/Lnew0.005 mg/L (11 values)0.588×
Lead, total recoverable, daily maximum0.022 mg/Lnew0.00012 mg/L (11 values)0.00545×
Lead, total recoverable, monthly average0.011 mg/Lnew0.000104 mg/L (11 values)0.00945×

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IN0020109 · MCP: https://passage-data.com/mcp