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Sewage treatment plant, Greensboro, Georgia. NPDES permit GA0021351 expired Jan 31, 2023; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Streamflow | monthly average | report only (cfs) | all year | 001 |
| Oxygen, dissolved [DO] | minimum | ≥ 6 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 10 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 15 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 37.8 kg/d | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 47.3 kg/d | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | report only (kg/d) | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | report only (kg/d) | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 76 kg/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 95 kg/d | all year | 001 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | weekly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | monthly average | report only (kg/d) | all year | 001 |
| Solids, total suspended | weekly average | report only (kg/d) | all year | 001 |
| Nitrogen, organic total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.7 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 2.6 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6.4 kg/d | all year | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 8 kg/d | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | all year | 001 |
| Phosphorus, total [as P] | weekly average | ≤ 1.5 mg/L | all year | 001 |
| Phosphorus, total [as P] | monthly average | ≤ 3.8 kg/d | all year | 001 |
| Phosphorus, total [as P] | weekly average | ≤ 4.7 kg/d | all year | 001 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 001 |
| Copper, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Phosphate, ortho [as P] | monthly average | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | ≤ .998 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | weekly average | ≤ 1.25 MGD | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ .02 mg/L | all year | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 400 #/100mL | all year | 001 |
| Solids, sludge, total, dry weight | monthly total | report only (dry ton) | all year | 001 |
| BOD, 5-day, percent removal | minimum | ≥ 85 % | all year | 001 |
| Solids, suspended percent removal | minimum | ≥ 85 % | all year | 001 |
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | minimum | report only (%) | Jun | 001 |
| Noel Statre 7Day Chronic Pimephales | minimum | report only (%) | Jun | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 50 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 90 mg/L | all year | 002 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | ≤ .998 MGD | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 003 |
| pH | minimum | report only (SU) | all year | 003 |
| pH | maximum | report only (SU) | all year | 003 |
| Nitrogen, nitrate total [as N] | monthly average | report only (mg/L) | Mar, Jun, Sep, Dec | 003 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | Mar, Jun, Sep, Dec | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Spray irrigation, application rate | weekly maximum | ≤ 1.85 in/wk | all year | 003 |
| Spray irrigation, application rate | instantaneous maximum | ≤ .25 in/hr | all year | 003 |
| Specific conductance | minimum | report only (umho/cm) | Mar, Jun, Sep, Dec | 004 |
| Specific conductance | maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 004 |
| pH | minimum | report only (SU) | Mar, Jun, Sep, Dec | 004 |
| pH | maximum | report only (SU) | Mar, Jun, Sep, Dec | 004 |
| Nitrogen, nitrate total [as N] | maximum | ≤ 10 mg/L | Mar, Jun, Sep, Dec | 004 |
| Depth to water level ft below landsurface | minimum | report only (ft) | all year | 004 |
| Depth to water level ft below landsurface | maximum | report only (ft) | all year | 004 |
| Coliform, fecal general | maximum | report only (#/100mL) | Jun, Dec | 004 |
| Specific conductance | minimum | report only (umho/cm) | Mar, Jun, Sep, Dec | 005 |
| Specific conductance | maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 005 |
| pH | minimum | report only (SU) | Mar, Jun, Sep, Dec | 005 |
| pH | maximum | report only (SU) | Mar, Jun, Sep, Dec | 005 |
| Nitrogen, nitrate total [as N] | maximum | ≤ 10 mg/L | Mar, Jun, Sep, Dec | 005 |
| Depth to water level ft below landsurface | minimum | report only (ft) | all year | 005 |
| Depth to water level ft below landsurface | maximum | report only (ft) | all year | 005 |
| Coliform, fecal general | maximum | report only (#/100mL) | Jun, Dec | 005 |
| Specific conductance | minimum | report only (umho/cm) | Mar, Jun, Sep, Dec | 006 |
| Specific conductance | maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 006 |
| pH | minimum | report only (SU) | Mar, Jun, Sep, Dec | 006 |
| pH | maximum | report only (SU) | Mar, Jun, Sep, Dec | 006 |
| Nitrogen, nitrate total [as N] | maximum | ≤ 10 mg/L | Mar, Jun, Sep, Dec | 006 |
| Depth to water level ft below landsurface | minimum | report only (ft) | all year | 006 |
| Depth to water level ft below landsurface | maximum | report only (ft) | all year | 006 |
| Coliform, fecal general | maximum | report only (#/100mL) | Jun, Dec | 006 |
| Specific conductance | minimum | report only (umho/cm) | Mar, Jun, Sep, Dec | 007 |
| Specific conductance | maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 007 |
| pH | minimum | report only (SU) | Mar, Jun, Sep, Dec | 007 |
| pH | maximum | report only (SU) | Mar, Jun, Sep, Dec | 007 |
| Nitrogen, nitrate total [as N] | maximum | ≤ 10 mg/L | Mar, Jun, Sep, Dec | 007 |
| Depth to water level ft below landsurface | minimum | report only (ft) | all year | 007 |
| Depth to water level ft below landsurface | maximum | report only (ft) | all year | 007 |
| Coliform, fecal general | maximum | report only (#/100mL) | Jun, Dec | 007 |
| Specific conductance | minimum | report only (umho/cm) | Mar, Jun, Sep, Dec | 008 |
| Specific conductance | maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 008 |
| pH | minimum | report only (SU) | Mar, Jun, Sep, Dec | 008 |
| pH | maximum | report only (SU) | Mar, Jun, Sep, Dec | 008 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 008 |
| Depth to water level ft below landsurface | minimum | report only (ft) | all year | 008 |
| Depth to water level ft below landsurface | maximum | report only (ft) | all year | 008 |
| Coliform, fecal general | maximum | report only (#/100mL) | Jun, Dec | 008 |
| Specific conductance | minimum | report only (umho/cm) | Mar, Jun, Sep, Dec | 009 |
| Specific conductance | maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 009 |
| pH | minimum | report only (SU) | Mar, Jun, Sep, Dec | 009 |
| pH | maximum | report only (SU) | Mar, Jun, Sep, Dec | 009 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 009 |
| Depth to water level ft below landsurface | minimum | report only (ft) | all year | 009 |
| Depth to water level ft below landsurface | maximum | report only (ft) | all year | 009 |
| Coliform, fecal general | maximum | report only (#/100mL) | Jun, Dec | 009 |
| Specific conductance | minimum | report only (umho/cm) | Mar, Jun, Sep, Dec | 010 |
| Specific conductance | maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 010 |
| pH | minimum | report only (SU) | Mar, Jun, Sep, Dec | 010 |
| pH | maximum | report only (SU) | Mar, Jun, Sep, Dec | 010 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 010 |
| Depth to water level ft below landsurface | minimum | report only (ft) | all year | 010 |
| Depth to water level ft below landsurface | maximum | report only (ft) | all year | 010 |
| Coliform, fecal general | maximum | report only (#/100mL) | Jun, Dec | 010 |
| Specific conductance | minimum | report only (umho/cm) | Mar, Jun, Sep, Dec | 011 |
| Specific conductance | maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 011 |
| pH | minimum | report only (SU) | Mar, Jun, Sep, Dec | 011 |
| pH | maximum | report only (SU) | Mar, Jun, Sep, Dec | 011 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 011 |
| Depth to water level ft below landsurface | minimum | report only (ft) | all year | 011 |
| Depth to water level ft below landsurface | maximum | report only (ft) | all year | 011 |
| Coliform, fecal general | maximum | report only (#/100mL) | Jun, Dec | 011 |
| Specific conductance | minimum | report only (umho/cm) | Mar, Jun, Sep, Dec | 012 |
| Specific conductance | maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 012 |
| pH | minimum | report only (SU) | Mar, Jun, Sep, Dec | 012 |
| pH | maximum | report only (SU) | Mar, Jun, Sep, Dec | 012 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 012 |
| Depth to water level ft below landsurface | minimum | report only (ft) | all year | 012 |
| Depth to water level ft below landsurface | maximum | report only (ft) | all year | 012 |
| Coliform, fecal general | maximum | report only (#/100mL) | Jun, Dec | 012 |
| Specific conductance | minimum | report only (umho/cm) | Mar, Jun, Sep, Dec | 013 |
| Specific conductance | maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 013 |
| pH | minimum | report only (SU) | Mar, Jun, Sep, Dec | 013 |
| pH | maximum | report only (SU) | Mar, Jun, Sep, Dec | 013 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 013 |
| Depth to water level ft below landsurface | minimum | report only (ft) | all year | 013 |
| Depth to water level ft below landsurface | maximum | report only (ft) | all year | 013 |
| Coliform, fecal general | maximum | report only (#/100mL) | Jun, Dec | 013 |
| Specific conductance | minimum | report only (umho/cm) | Mar, Jun, Sep, Dec | 014 |
| Specific conductance | maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 014 |
| pH | minimum | report only (SU) | Mar, Jun, Sep, Dec | 014 |
| pH | maximum | report only (SU) | Mar, Jun, Sep, Dec | 014 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 014 |
| Depth to water level ft below landsurface | minimum | report only (ft) | all year | 014 |
| Depth to water level ft below landsurface | maximum | report only (ft) | all year | 014 |
| Coliform, fecal general | maximum | report only (#/100mL) | Jun, Dec | 014 |
| Specific conductance | minimum | report only (umho/cm) | Mar, Jun, Sep, Dec | 015 |
| Specific conductance | maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 015 |
| pH | minimum | report only (SU) | Mar, Jun, Sep, Dec | 015 |
| pH | maximum | report only (SU) | Mar, Jun, Sep, Dec | 015 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 015 |
| Depth to water level ft below landsurface | minimum | report only (ft) | all year | 015 |
| Depth to water level ft below landsurface | maximum | report only (ft) | all year | 015 |
| Coliform, fecal general | maximum | report only (#/100mL) | Jun, Dec | 015 |
| Specific conductance | minimum | report only (umho/cm) | Mar, Jun, Sep, Dec | 016 |
| Specific conductance | maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 016 |
| pH | minimum | report only (SU) | Mar, Jun, Sep, Dec | 016 |
| pH | maximum | report only (SU) | Mar, Jun, Sep, Dec | 016 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 016 |
| Depth to water level ft below landsurface | minimum | report only (ft) | all year | 016 |
| Depth to water level ft below landsurface | maximum | report only (ft) | all year | 016 |
| Coliform, fecal general | maximum | report only (#/100mL) | Jun, Dec | 016 |
| Specific conductance | minimum | report only (umho/cm) | Mar, Jun, Sep, Dec | 017 |
| Specific conductance | maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 017 |
| pH | minimum | report only (SU) | Mar, Jun, Sep, Dec | 017 |
| pH | maximum | report only (SU) | Mar, Jun, Sep, Dec | 017 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 017 |
| Depth to water level ft below landsurface | minimum | report only (ft) | all year | 017 |
| Depth to water level ft below landsurface | maximum | report only (ft) | all year | 017 |
| Coliform, fecal general | maximum | report only (#/100mL) | Jun, Dec | 017 |
| Temperature, water deg. centigrade | maximum | report only (deg C) | Mar, Jun, Sep, Dec | 018 |
| Temperature, water deg. centigrade | maximum | report only (deg C) | Mar, Jun, Sep, Dec | 018 |
| Specific conductance | minimum | report only (umho/cm) | Mar, Jun, Sep, Dec | 018 |
| Specific conductance | maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 018 |
| Specific conductance | minimum | report only (umho/cm) | Mar, Jun, Sep, Dec | 018 |
| Specific conductance | maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 018 |
| Oxygen, dissolved [DO] | minimum | report only (mg/L) | Mar, Jun, Sep, Dec | 018 |
| Oxygen, dissolved [DO] | minimum | report only (mg/L) | Mar, Jun, Sep, Dec | 018 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 018 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 018 |
| pH | minimum | report only (SU) | Mar, Jun, Sep, Dec | 018 |
| pH | maximum | report only (SU) | Mar, Jun, Sep, Dec | 018 |
| pH | minimum | report only (SU) | Mar, Jun, Sep, Dec | 018 |
| pH | maximum | report only (SU) | Mar, Jun, Sep, Dec | 018 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 018 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 018 |
| Nitrogen, Kjeldahl, total [as N] | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 018 |
| Nitrogen, Kjeldahl, total [as N] | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 018 |
Cited limits by parameter: Georgia's rules and the federal ones.
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