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Virginia-American Water Company

Sewerage Systems, major discharger, Dale City, Virginia. NPDES permit VA0024724, in force until Jun 30, 2029. Last 12 months: over a limit once (last November 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: form Q monthly (25 values), form A1 yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
November 2025Nitrogen, ammonia total [as N], weekly average3.5≤ 2.9 mg/L21%

Limits in force (32)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 6 mg/Lall year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 6 mg/Lall year
Solids, total suspendedweekly average≤ 9 mg/Lall year
Solids, total suspendedmonthly average≤ 100 kg/dall year
Solids, total suspendedweekly average≤ 160 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LApr–Oct
Nitrogen, ammonia total [as N]monthly average≤ 2.4 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]7-day average≤ 1.5 mg/LApr–Oct
Nitrogen, ammonia total [as N]weekly average≤ 2.9 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 17 kg/dApr–Oct
Nitrogen, ammonia total [as N]7-day average≤ 26 kg/dApr–Oct
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly average≤ .18 mg/Lall year
Phosphorus, total [as P]weekly average≤ .27 mg/Lall year
Phosphorus, total [as P]monthly average≤ 6.9 lb/dall year
Phosphorus, total [as P]weekly average≤ 10 lb/dall year
Flow, in conduit or thru treatment plantmonthly average≤ 4.6 MGD (alert, not enforceable)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD) (alert, not enforceable)all year
E. colimonthly average≤ 126 #/100mLall year
Nitrogen, Total As Nannual average≤ 3 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 5 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 8 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 87 kg/dall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 140 kg/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

How strict are these limits?

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/VA0024724 · MCP: https://passage-data.com/mcp