Alexandria Sanitation Authority

NPDES permit VA0025160 · Major POTW · administratively continued, expires 2026-06-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2026-06-30 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

1values over a limit
0required values missing, on 0 form(s)
0of 24 forms filed late

Last period with anything received: 2026-07-31. Most often over: BOD, carbonaceous [5 day, 20 C] (1).

Reporting

Reports are due about 10 days after each monitoring period ends (the most common figure among VA permits in EPA's filings — check your permit).

Limits in force (94)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MINIMUM >= 6 mg/L all year
001Oxygen, dissolved [DO]MINIMUM >= 6 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 6 mg/L all year
001Solids, total suspendedMO AVG <= 6 mg/L all year
001Solids, total suspendedWKLY AVG <= 9 mg/L all year
001Solids, total suspendedWKLY AVG report only all year
001Solids, total suspendedMO AVG <= 1200 kg/d all year
001Solids, total suspendedMO AVG <= 1200 kg/d all year
001Solids, total suspendedWKLY AVG <= 1800 kg/d all year
001Solids, total suspendedWKLY AVG report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 6.9 mg/L Feb, Mar
001Nitrogen, ammonia total [as N]MO AVG <= 1 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 8.4 mg/L Jan, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 6.9 mg/L Feb, Mar
001Nitrogen, ammonia total [as N]MO AVG <= 8.4 mg/L Jan, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 1 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 8.5 mg/L Feb, Mar
001Nitrogen, ammonia total [as N]WKLY AVG <= 4.4 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 10 mg/L Jan, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG report only Feb, Mar
001Nitrogen, ammonia total [as N]WKLY AVG report only Jan, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 200 kg/d Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 200 kg/d Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 900 kg/d Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrogen, Kjeldahl, total [as N]WKLY AVG report only all year
001Nitrogen, Kjeldahl, total [as N]WKLY AVG report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Phosphorus, total [as P]MO AVG <= .18 mg/L all year
001Phosphorus, total [as P]MO AVG <= .18 mg/L all year
001Phosphorus, total [as P]WKLY AVG <= .27 mg/L all year
001Phosphorus, total [as P]WKLY AVG report only all year
001Phosphorus, total [as P]MO AVG <= 81 lb/d all year
001Phosphorus, total [as P]MO AVG <= 81 lb/d all year
001Phosphorus, total [as P]WKLY AVG <= 120 lb/d all year
001Phosphorus, total [as P]WKLY AVG report only all year
001Flow, in conduit or thru treatment plantMO AVG <= 54 MGD (alert) all year
001Flow, in conduit or thru treatment plantMA report only (alert) all year
001E. coliMO GEOMN <= 126 #/100mL all year
001E. coliMO GEOMN <= 126 #/100mL all year
001Nitrogen, Total As NANNL AVG <= 3 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 5 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 5 mg/L all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 8 mg/L all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 1000 kg/d all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 1000 kg/d all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 1600 kg/d all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG report only all year
001TU Static Renewal 7-Day Chronic Ceriodaphnia dubiaMAXIMUM report only all year
001TU Static Renewal 7-Day Chronic Pimphales promelasMAXIMUM report only all year
002Oxygen, dissolved [DO]MINIMUM >= 6 mg/L all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedMO AVG <= 6 mg/L all year
002Solids, total suspendedWKLY AVG <= 9 mg/L all year
002Solids, total suspendedMO AVG <= 1200 kg/d all year
002Solids, total suspendedWKLY AVG <= 1800 kg/d all year
002Nitrogen, total [as N]MO AVG report only all year
002Nitrogen, ammonia total [as N]MO AVG <= 6.9 mg/L Feb, Mar
002Nitrogen, ammonia total [as N]MO AVG <= 8.4 mg/L Jan, Nov, Dec
002Nitrogen, ammonia total [as N]MO AVG <= 1 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]WKLY AVG <= 8.5 mg/L Feb, Mar
002Nitrogen, ammonia total [as N]WKLY AVG <= 10 mg/L Jan, Nov, Dec
002Nitrogen, ammonia total [as N]WKLY AVG <= 4.4 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MO AVG <= 200 kg/d Apr, May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]WKLY AVG <= 900 kg/d Apr, May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
002Nitrogen, Kjeldahl, total [as N]WKLY AVG report only all year
002Nitrite + Nitrate total [as N]MO AVG report only all year
002Phosphorus, total [as P]MO AVG <= .18 mg/L all year
002Phosphorus, total [as P]WKLY AVG <= .27 mg/L all year
002Phosphorus, total [as P]MO AVG <= 81 lb/d all year
002Phosphorus, total [as P]WKLY AVG <= 120 lb/d all year
002Flow, in conduit or thru treatment plantMO AVG <= 54 MGD (alert) all year
002Flow, in conduit or thru treatment plantMA report only (alert) all year
002Chlorine, total residualMO AVG <= .009 mg/L all year
002Chlorine, total residualWKLY AVG <= .01 mg/L all year
002E. coliMO GEOMN <= 126 #/100mL all year
002Nitrogen, Total As NANNL AVG <= 3 mg/L all year
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 5 mg/L all year
002BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 8 mg/L all year
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 1000 kg/d all year
002BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 1600 kg/d all year
002TU Static Renewal 7-Day Chronic Ceriodaphnia dubiaMAXIMUM report only all year
002TU Static Renewal 7-Day Chronic Pimphales promelasMAXIMUM report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states