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Sewage treatment plant, Ty Ty, Georgia. NPDES permit GA0025500 expired Feb 28, 2022; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | minimum | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 8.9 kg/d | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 11.1 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 | ≤ 8.5 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 90 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 120 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 27 kg/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 33 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 | report only (mg/L) | 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 | report only (mg/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 | ≤ .078 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | weekly average | ≤ .098 MGD | all year | 001 |
| Chlorine, total residual | monthly average | ≤ .011 mg/L | all year | 001 |
| Chlorine, total residual | weekly average | ≤ .011 mg/L | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ .011 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 |
| 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 | report only (SU) | all year | 002 |
| pH | maximum | report only (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 | ≤ .1055 MGD | all year | 002 |
| Flow, in conduit or thru treatment plant | weekly average | ≤ .132 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 |
| Rainfall | monthly total | report only (in) | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Spray irrigation, application rate | weekly maximum | ≤ 2.8 in/wk | all year | 003 |
| Spray irrigation, application rate | weekly maximum | ≤ 2.26 in/wk | all year | 003 |
| 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 | report only (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 |
| Temperature, water deg. centigrade | maximum | report only (deg C) | Mar, Jun, Sep, Dec | 009 |
| Temperature, water deg. centigrade | maximum | report only (deg C) | Mar, Jun, Sep, Dec | 009 |
| Specific conductance | minimum | report only (umho/cm) | Mar, Jun, Sep, Dec | 009 |
| Specific conductance | maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 009 |
| Specific conductance | minimum | report only (umho/cm) | Mar, Jun, Sep, Dec | 009 |
| Specific conductance | maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 009 |
| Oxygen, dissolved [DO] | minimum | report only (mg/L) | Mar, Jun, Sep, Dec | 009 |
| Oxygen, dissolved [DO] | minimum | report only (mg/L) | Mar, Jun, Sep, Dec | 009 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 009 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) | 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 |
| 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 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 009 |
| Nitrogen, Kjeldahl, total [as N] | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 009 |
| Nitrogen, Kjeldahl, total [as N] | maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 009 |
Cited limits by parameter: Georgia's rules and the federal ones.
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