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Sewage treatment plant, major discharger, Atlanta, Georgia. NPDES permit GA0037168 expired Aug 31, 2020; its limits still apply. Last 12 months: no values over a limit, 2 of 48 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | maximum | report only (deg C) | all year | 001 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | maximum | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | maximum | report only (mg/L) | all year | 001 |
| Nickel, total recoverable | maximum | report only (mg/L) | all year | 001 |
| Zinc, total recoverable | maximum | report only (mg/L) | all year | 001 |
| Cadmium, total recoverable | maximum | report only (mg/L) | all year | 001 |
| Lead, total recoverable | maximum | report only (mg/L) | all year | 001 |
| Copper, total recoverable | maximum | report only (mg/L) | all year | 001 |
| Rainfall | maximum | report only (in) | all year | 001 |
| Duration | total | report only (hr) | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ .1 mg/L | all year | 001 |
| Flow, in conduit or thru treatment plant | total | report only (Mgal) | all year | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 1000 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | May–Oct | 001 |
| Coliform, fecal general | daily maximum | ≤ 4000 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Coliform, fecal general | daily maximum | ≤ 2000 #/100mL | May–Oct | 001 |
| NOAEL Static Renewal 96Hr Acute Ceriodaphnia dubia | minimum | report only (%) | all year | 001 |
| NOAEL Static Renewal 96Hr Acute Pimephales promelas | minimum | report only (%) | all year | 001 |
| Temperature, water deg. centigrade | maximum | report only (deg C) | all year | 002 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | maximum | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | maximum | report only (mg/L) | all year | 002 |
| Hardness, total [as CaCO3] | maximum | report only (mg/L) | all year | 002 |
| Nickel, total recoverable | maximum | report only (mg/L) | all year | 002 |
| Zinc, total recoverable | maximum | report only (mg/L) | all year | 002 |
| Cadmium, total recoverable | maximum | report only (mg/L) | all year | 002 |
| Lead, total recoverable | maximum | report only (mg/L) | all year | 002 |
| Copper, total recoverable | maximum | report only (mg/L) | all year | 002 |
| Rainfall | maximum | report only (in) | all year | 002 |
| Duration | total | report only (hr) | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ .1 mg/L | all year | 002 |
| Flow, in conduit or thru treatment plant | total | report only (Mgal) | all year | 002 |
| Coliform, fecal general | monthly geometric mean | ≤ 1000 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | May–Oct | 002 |
| Coliform, fecal general | daily maximum | ≤ 4000 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Coliform, fecal general | daily maximum | ≤ 2000 #/100mL | May–Oct | 002 |
| NOAEL Static Renewal 96Hr Acute Ceriodaphnia dubia | minimum | report only (%) | all year | 002 |
| NOAEL Static Renewal 96Hr Acute Pimephales promelas | minimum | report only (%) | all year | 002 |
| Temperature, water deg. centigrade | maximum | report only (deg C) | all year | 003 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) | all year | 003 |
| pH | minimum | report only (SU) | all year | 003 |
| pH | maximum | report only (SU) | all year | 003 |
| Solids, total suspended | maximum | report only (mg/L) | all year | 003 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | maximum | report only (mg/L) | all year | 003 |
| Hardness, total [as CaCO3] | maximum | report only (mg/L) | all year | 003 |
| Nickel, total recoverable | maximum | report only (mg/L) | all year | 003 |
| Zinc, total recoverable | maximum | report only (mg/L) | all year | 003 |
| Cadmium, total recoverable | maximum | report only (mg/L) | all year | 003 |
| Lead, total recoverable | maximum | report only (mg/L) | all year | 003 |
| Copper, total recoverable | maximum | report only (mg/L) | all year | 003 |
| Chlorine, total residual | daily maximum | report only (mg/L) | all year | 003 |
| Coliform, fecal general | monthly geometric mean | report only (#/100mL) | all year | 003 |
| Coliform, fecal general | daily maximum | report only (#/100mL) | all year | 003 |
| Temperature, water deg. centigrade | maximum | report only (deg C) | all year | 004 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) | all year | 004 |
| pH | minimum | report only (SU) | all year | 004 |
| pH | maximum | report only (SU) | all year | 004 |
| Solids, total suspended | maximum | report only (mg/L) | all year | 004 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) | all year | 004 |
| Phosphorus, total [as P] | maximum | report only (mg/L) | all year | 004 |
| Hardness, total [as CaCO3] | maximum | report only (mg/L) | all year | 004 |
| Nickel, total recoverable | maximum | report only (mg/L) | all year | 004 |
| Zinc, total recoverable | maximum | report only (mg/L) | all year | 004 |
| Cadmium, total recoverable | maximum | report only (mg/L) | all year | 004 |
| Lead, total recoverable | maximum | report only (mg/L) | all year | 004 |
| Copper, total recoverable | maximum | report only (mg/L) | all year | 004 |
| Chlorine, total residual | daily maximum | report only (mg/L) | all year | 004 |
| Coliform, fecal general | monthly geometric mean | report only (#/100mL) | all year | 004 |
| Coliform, fecal general | daily maximum | report only (#/100mL) | all year | 004 |
Cited limits by parameter: Georgia's rules and the federal ones.
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