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Sewage treatment plant, major discharger, Alexandria, Virginia. NPDES permit VA0025160 expired Jun 30, 2026; its limits still apply. Last 12 months: over a limit once (last January 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit |
|---|---|---|---|
| January 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | > 104 | ≤ 1000 kg/d |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | minimum | ≥ 6 mg/L | all year | 001 |
| Oxygen, dissolved [DO] | minimum | ≥ 6 mg/L | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 6 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 6 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 9 mg/L | all year | 001 |
| Solids, total suspended | weekly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | monthly average | ≤ 1200 kg/d | all year | 001 |
| Solids, total suspended | monthly average | ≤ 1200 kg/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 1800 kg/d | all year | 001 |
| Solids, total suspended | weekly average | report only (kg/d) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6.9 mg/L | Feb, Mar | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1 mg/L | Apr–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 8.4 mg/L | Jan, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6.9 mg/L | Feb, Mar | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 8.4 mg/L | Jan, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1 mg/L | Apr–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 8.5 mg/L | Feb, Mar | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 4.4 mg/L | Apr–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 10 mg/L | Jan, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly average | report only (mg/L) | Feb, Mar | 001 |
| Nitrogen, ammonia total [as N] | weekly average | report only (mg/L) | Jan, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly average | report only (mg/L) | Apr–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 200 kg/d | Apr–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 200 kg/d | Apr–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 900 kg/d | Apr–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly average | report only (kg/d) | Apr–Oct | 001 |
| Nitrogen, Kjeldahl, 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 |
| Nitrogen, Kjeldahl, total [as N] | weekly average | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | weekly 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 | ≤ .18 mg/L | all year | 001 |
| Phosphorus, total [as P] | monthly average | ≤ .18 mg/L | all year | 001 |
| Phosphorus, total [as P] | weekly average | ≤ .27 mg/L | all year | 001 |
| Phosphorus, total [as P] | weekly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | ≤ 81 lb/d | all year | 001 |
| Phosphorus, total [as P] | monthly average | ≤ 81 lb/d | all year | 001 |
| Phosphorus, total [as P] | weekly average | ≤ 120 lb/d | all year | 001 |
| Phosphorus, total [as P] | weekly average | report only (lb/d) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | ≤ 54 MGD (alert, not enforceable) | all year | 001 |
| Flow, in conduit or thru treatment plant | EPA's "MAX BDL" | report only (MGD) (alert, not enforceable) | all year | 001 |
| E. coli | monthly geometric mean | ≤ 126 #/100mL | all year | 001 |
| E. coli | monthly geometric mean | ≤ 126 #/100mL | all year | 001 |
| Nitrogen, Total As N | annual average | ≤ 3 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 5 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 5 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 8 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (mg/L) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 1000 kg/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 1000 kg/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 1600 kg/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (kg/d) | all year | 001 |
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | maximum | report only (tox chronic) | all year | 001 |
| TU Static Renewal 7-Day Chronic Pimphales promelas | maximum | report only (tox chronic) | all year | 001 |
| Oxygen, dissolved [DO] | minimum | ≥ 6 mg/L | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 6 mg/L | all year | 002 |
| Solids, total suspended | weekly average | ≤ 9 mg/L | all year | 002 |
| Solids, total suspended | monthly average | ≤ 1200 kg/d | all year | 002 |
| Solids, total suspended | weekly average | ≤ 1800 kg/d | all year | 002 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6.9 mg/L | Feb, Mar | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 8.4 mg/L | Jan, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1 mg/L | Apr–Oct | 002 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 8.5 mg/L | Feb, Mar | 002 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 10 mg/L | Jan, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 4.4 mg/L | Apr–Oct | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 200 kg/d | Apr–Oct | 002 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 900 kg/d | Apr–Oct | 002 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | weekly average | report only (mg/L) | all year | 002 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | monthly average | ≤ .18 mg/L | all year | 002 |
| Phosphorus, total [as P] | weekly average | ≤ .27 mg/L | all year | 002 |
| Phosphorus, total [as P] | monthly average | ≤ 81 lb/d | all year | 002 |
| Phosphorus, total [as P] | weekly average | ≤ 120 lb/d | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | ≤ 54 MGD (alert, not enforceable) | all year | 002 |
| Flow, in conduit or thru treatment plant | EPA's "MAX BDL" | report only (MGD) (alert, not enforceable) | all year | 002 |
| Chlorine, total residual | monthly average | ≤ .009 mg/L | all year | 002 |
| Chlorine, total residual | weekly average | ≤ .01 mg/L | all year | 002 |
| E. coli | monthly geometric mean | ≤ 126 #/100mL | all year | 002 |
| Nitrogen, Total As N | annual average | ≤ 3 mg/L | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 5 mg/L | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 8 mg/L | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 1000 kg/d | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 1600 kg/d | all year | 002 |
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | maximum | report only (tox chronic) | all year | 002 |
| TU Static Renewal 7-Day Chronic Pimphales promelas | maximum | report only (tox chronic) | all year | 002 |
Cited limits by parameter: Virginia'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/VA0025160 · MCP: https://passage-data.com/mcp