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Sewage treatment plant, Zebulon, Georgia. NPDES permit GA0049476, in force until Apr 30, 2030. Last 12 months: over a limit 6 times (last September 2026), 120 of 180 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit |
|---|---|---|---|---|
| December 2025 | 008 | E. coli, maximum | < 1 #/100mL | ≤ 0 #/100mL |
| December 2025 | 009 | E. coli, maximum | < 1 #/100mL | ≤ 0 #/100mL |
| June 2026 | 008 | E. coli, maximum | < 1 #/100mL | ≤ 0 #/100mL |
| June 2026 | 009 | E. coli, maximum | < 1 #/100mL | ≤ 0 #/100mL |
| September 2026 | 008 | E. coli, maximum | 1 #/100mL | ≤ 0 #/100mL |
| September 2026 | 009 | E. coli, maximum | < 1 #/100mL | ≤ 0 #/100mL |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | minimum | ≥ 5 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 | ≤ 32.5 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 40.7 lb/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 (lb/d) | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | report only (lb/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 | ≤ 149 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 187 lb/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 (lb/d) | all year | 001 |
| Solids, total suspended | weekly average | report only (lb/d) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | 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 | ≤ .199 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | weekly average | ≤ .249 MGD | all year | 001 |
| Chlorine, total residual | maximum | ≤ .01 mg/L | all year | 001 |
| E. coli | monthly geometric mean | ≤ 126 #/100mL | all year | 001 |
| E. coli | weekly geometric mean | ≤ 410 #/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 | ≥ 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 | ≤ .499 MGD | all year | 002 |
| Flow, in conduit or thru treatment plant | weekly average | ≤ .624 MGD | all year | 002 |
| 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) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 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 in/wk | all year | 003 |
| Spray irrigation, application rate | weekly maximum | ≤ 2 in/wk | all year | 003 |
| Spray irrigation, application rate | weekly maximum | ≤ 2 in/wk | all year | 003 |
| Spray irrigation, application rate | weekly maximum | ≤ 2 in/wk | all year | 003 |
| Spray irrigation, application rate | weekly maximum | ≤ 2 in/wk | all year | 003 |
| Spray irrigation, application rate | instantaneous maximum | ≤ .25 in/hr | all year | 003 |
| Spray irrigation, application rate | instantaneous maximum | ≤ .25 in/hr | all year | 003 |
| Spray irrigation, application rate | instantaneous maximum | ≤ .25 in/hr | all year | 003 |
| Spray irrigation, application rate | instantaneous maximum | ≤ .25 in/hr | all year | 003 |
| Spray irrigation, application rate | instantaneous maximum | ≤ .25 in/hr | all year | 003 |
| Conductivity | minimum | report only (umho/cm) | all year | 004 |
| Conductivity | maximum | report only (umho/cm) | all year | 004 |
| pH | minimum | report only (SU) | all year | 004 |
| pH | maximum | report only (SU) | all year | 004 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | all year | 004 |
| E. coli | maximum | report only (#/100mL) | all year | 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 |
| Conductivity | minimum | report only (umho/cm) | all year | 005 |
| Conductivity | maximum | report only (umho/cm) | all year | 005 |
| pH | minimum | report only (SU) | all year | 005 |
| pH | maximum | report only (SU) | all year | 005 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | all year | 005 |
| E. coli | maximum | report only (#/100mL) | all year | 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 |
| Conductivity | minimum | report only (umho/cm) | all year | 006 |
| Conductivity | maximum | report only (umho/cm) | all year | 006 |
| pH | minimum | report only (SU) | all year | 006 |
| pH | maximum | report only (SU) | all year | 006 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | all year | 006 |
| E. coli | minimum | report only (#/100mL) | all year | 006 |
| E. coli | maximum | report only (#/100mL) | all year | 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 |
| Conductivity | minimum | report only (umho/cm) | all year | 007 |
| Conductivity | maximum | report only (umho/cm) | all year | 007 |
| pH | minimum | report only (SU) | all year | 007 |
| pH | maximum | report only (SU) | all year | 007 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | all year | 007 |
| E. coli | maximum | report only (#/100mL) | all year | 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 |
| Conductivity | minimum | report only (umho/cm) | all year | 008 |
| Conductivity | maximum | report only (umho/cm) | all year | 008 |
| pH | minimum | report only (SU) | all year | 008 |
| pH | maximum | report only (SU) | all year | 008 |
| Nitrogen, nitrate total [as N] | maximum | ≤ 10 mg/L | all year | 008 |
| E. coli | maximum | ≤ 0 #/100mL | all year | 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 |
| Conductivity | minimum | report only (umho/cm) | all year | 009 |
| Conductivity | maximum | report only (umho/cm) | all year | 009 |
| pH | minimum | report only (SU) | all year | 009 |
| pH | maximum | report only (SU) | all year | 009 |
| Nitrogen, nitrate total [as N] | maximum | ≤ 10 mg/L | all year | 009 |
| E. coli | maximum | ≤ 0 #/100mL | all year | 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 |
| Temperature, water deg. centigrade | maximum | report only (deg C) | all year | 010 |
| Temperature, water deg. centigrade | maximum | report only (deg C) | all year | 010 |
| Conductivity | maximum | report only (umho/cm) | all year | 010 |
| Conductivity | maximum | report only (umho/cm) | all year | 010 |
| Oxygen, dissolved [DO] | minimum | report only (mg/L) | all year | 010 |
| Oxygen, dissolved [DO] | minimum | report only (mg/L) | all year | 010 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) | all year | 010 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) | all year | 010 |
| pH | maximum | report only (SU) | all year | 010 |
| pH | maximum | report only (SU) | all year | 010 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | all year | 010 |
| Nitrogen, nitrate total [as N] | maximum | report only (mg/L) | all year | 010 |
| Nitrogen, Kjeldahl, total [as N] | maximum | report only (mg/L) | all year | 010 |
| Nitrogen, Kjeldahl, total [as N] | maximum | report only (mg/L) | all year | 010 |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C, monthly average | 20 mg/L | tighter | — | — |
| BOD, 5-day, 20 deg. C, weekly average | 30 mg/L | tighter | — | — |
| Nitrogen, ammonia total [as N], monthly average | 7 mg/L | new | — | — |
| Nitrogen, ammonia total [as N], monthly average | 11.6 lb/d | new | — | — |
| Nitrogen, ammonia total [as N], weekly average | 14.5 lb/d | new | — | — |
| Nitrogen, ammonia total [as N], weekly average | 10.5 mg/L | new | — | — |
Cited limits by parameter: Georgia's rules and the federal ones.
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