Northumberland County

NPDES permit VA0091421 · Minor POTW · effective, expires 2029-11-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

10values over a limit
0required values missing, on 0 form(s)
1of 14 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, Kjeldahl, total [as N] (6), Nitrogen, ammonia total [as N] (4).

Reporting

Reports are due about 10 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (29)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MINIMUM >= 5 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 10 mg/L all year
001Solids, total suspendedWKLY AVG <= 15 mg/L all year
001Solids, total suspendedMO AVG <= 2.3 kg/d all year
001Solids, total suspendedWKLY AVG <= 3.4 kg/d all year
001Solids, total suspendedMO AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG <= .63 mg/L all year
001Nitrogen, ammonia total [as N]WKLY AVG <= .93 mg/L all year
001Nitrogen, Kjeldahl, total [as N]MO AVG <= 3 mg/L all year
001Nitrogen, Kjeldahl, total [as N]WKLY AVG <= 4.5 mg/L all year
001Nitrogen, Kjeldahl, total [as N]MO AVG <= .68 kg/d all year
001Nitrogen, Kjeldahl, total [as N]WKLY AVG <= 1 kg/d all year
001Hardness, total [as CaCO3]MO AVG report only all year
001Zinc, total recoverableMO AVG <= 82 ug/L all year
001Zinc, total recoverableWKLY AVG <= 82 ug/L all year
001Copper, total recoverableMO AVG <= 9.3 ug/L all year
001Copper, total recoverableWKLY AVG <= 9.3 ug/L all year
001Flow, in conduit or thru treatment plantMO AVG <= .06 MGD (alert) all year
001Flow, in conduit or thru treatment plantWKLY AVG report only (alert) all year
001E. coliMO GEOMN <= 126 #/100mL all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 15 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 2.3 kg/d all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 3.4 kg/d all year
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % 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