Passage Data · Check a report · Use it from your AI

Bath County Service Authority

Sewage treatment plant, Millboro, Virginia. NPDES permit VA0073156, in force until Aug 31, 2030. Last 12 months: over a limit 8 times (last March 2026), 4 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: form M1 monthly (16 values), form S1 twice a year
Last report on file
August 2026
Oct 2024 – Sep 2025
5 values over a limit, 0 required values missing, 2 of 12 reports late

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

Period endingParameterReportedLimitOver by
November 2025E. coli, monthly average2045≤ 126 #/100mL1523%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average4.78≤ 3.8 kg/d26%
January 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average17.8≤ 5.7 kg/d212%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average> 1.45≤ 3.8 kg/d—
March 2026BOD, carbonaceous [5 day, 20 C], monthly average> 20≤ 20 mg/L—
March 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average> 4.9≤ 5.7 kg/d—
March 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average> 67.8≤ 30 mg/L—
March 2026Solids, total suspended, monthly average39.4≤ 30 mg/L31%

Limits in force (20)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 3.5 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 5.7 kg/dall year
Solids, total suspendedmaximum weekly average≤ 8.5 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 7.6 mg/Lall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 11 mg/Lall year
Flow, in conduit or thru treatment plantmonthly average≤ .05 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
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/Lall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 30 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 3.8 kg/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 5.7 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

New limits from Sep 1, 2027

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], monthly average4.3 mg/Ltighter0.25 mg/L (10 values)0.0581×
Nitrogen, ammonia total [as N], maximum weekly average6.4 mg/Ltighter0.5 mg/L (10 values)0.0781×

How strict are these limits?

Cited limits by parameter: Virginia's rules and the federal ones.

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/VA0073156 · MCP: https://passage-data.com/mcp