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Louisa County Water Authority

Sewage treatment plant, Louisa, Virginia. NPDES permit VA0067954, in force until Jun 30, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: form M1 monthly (20 values), form A1 yearly, form A2 yearly
Renewal application due
Jan 1, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 14 reports late

Limits in force (32)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 20 mg/Lall year
Solids, total suspendedweekly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 60 kg/dall year
Solids, total suspendedweekly average≤ 91 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≤ 5 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 2.5 mg/LApr–Oct
Nitrogen, ammonia total [as N]weekly average≤ 6.8 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 3.4 mg/LApr–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 averagereport only (mg/L)all year
Hardness, total [as CaCO3]monthly averagereport only (mg/L)all year
Zinc, total recoverablemonthly averagereport only (ug/L)all year
Flow, in conduit or thru treatment plantmonthly average≤ .8 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≤ 8 mg/Lall year
Phosphorus, Total As Pannual average≤ 1 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 30 kg/dall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 45 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
TU Static Renewal 7-Day Chronic Ceriodaphnia dubiamaximumreport only (tox chronic)all year
TU Static Renewal 7-Day Chronic Pimphales promelasmaximumreport only (tox chronic)all year

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/VA0067954 · MCP: https://passage-data.com/mcp