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Western Virginia Water Authority

Sewage treatment plant, major discharger, Roanoke, Virginia. NPDES permit VA0025020, in force until Jun 30, 2029. Last 12 months: over a limit 2 times (last April 2026), 2 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: form M1 monthly (7 values), form Q1 quarterly (2 values), form W monthly (22 values), form A1 yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
12 values over a limit, 0 required values missing, 0 of 25 reports late

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

Period endingParameterReportedLimitOver by
April 2026Nitrogen, Kjeldahl, total [as N], monthly average2.8≤ 2 mg/L40%
April 2026Nitrogen, Kjeldahl, total [as N], maximum weekly average3.5≤ 3 mg/L17%

Limits in force (44)

ParameterStatisticLimitMonths
Temperature, water deg. centigrademonthly maximumreport only (deg C)all year
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 5 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 7.5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 1040 kg/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 1561 kg/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 5 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 10 mg/Lall year
Solids, total suspendedmonthly average≤ 1040 kg/dall year
Solids, total suspendedmaximum 30-day averagereport only (ton/mo)all year
Solids, total suspendedmaximum weekly average≤ 2081 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]maximum weekly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly average≤ 4 mg/LJan–Mar
Nitrogen, Kjeldahl, total [as N]monthly average≤ 2 mg/LApr–Sep
Nitrogen, Kjeldahl, total [as N]monthly average≤ 4 mg/LOct–Dec
Nitrogen, Kjeldahl, total [as N]maximum weekly average≤ 5 mg/LJan–Mar
Nitrogen, Kjeldahl, total [as N]maximum weekly average≤ 3 mg/LApr–Sep
Nitrogen, Kjeldahl, total [as N]maximum weekly average≤ 4.6 mg/LOct–Dec
Nitrogen, Kjeldahl, total [as N]monthly average≤ 832 kg/dJan–Mar
Nitrogen, Kjeldahl, total [as N]monthly average≤ 416 kg/dApr–Sep
Nitrogen, Kjeldahl, total [as N]monthly average≤ 832 kg/dOct–Dec
Nitrogen, Kjeldahl, total [as N]maximum weekly average≤ 1040 kg/dJan–Mar
Nitrogen, Kjeldahl, total [as N]maximum weekly average≤ 624 kg/dApr–Sep
Nitrogen, Kjeldahl, total [as N]maximum weekly average≤ 957 kg/dOct–Dec
Phosphorus, total [as P]monthly average≤ .2 mg/Lall year
Phosphorus, total [as P]maximum weekly average≤ .3 mg/Lall year
Phosphorus, total [as P]monthly average≤ 41 kg/dall year
Phosphorus, total [as P]maximum weekly average≤ 62 kg/dall year
Copper, dissolved [as Cu]monthly averagereport only (ug/L)all year
Copper, dissolved [as Cu]maximum weekly averagereport only (ug/L)all year
Flow, in conduit or thru treatment plantmonthly average≤ 55 MGD (alert, not enforceable)all year
Flow, in conduit or thru treatment plantmaximumreport only (MGD) (alert, not enforceable)all year
Chlorine, total residualmonthly average≤ .0025 mg/Lall year
Chlorine, total residualmaximum weekly average≤ .0027 mg/Lall year
Chlorine, total residualinstantaneous minimum≥ .5 mg/Lall year
BOD, percent removal [total]monthly average minimum≥ 85 %all year
E. colimaximum monthly geometric mean≤ 126 #/100mLall year
Suspended solids, total annualmaximum≤ 472.2 ton/yrall year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

New limits from Jul 1, 2028

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], monthly average1 mg/L (Oct–Dec)new——
Nitrogen, ammonia total [as N], monthly average1.8 mg/L (Jan–Mar)new——
Nitrogen, ammonia total [as N], maximum weekly average1.4 mg/L (Oct–Dec)new——
Nitrogen, ammonia total [as N], weekly average2.4 mg/L (Jan–Mar)new——

How strict are these limits?

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

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Your permit document is the final word. As JSON: /api/v1/permits/VA0025020 · MCP: https://passage-data.com/mcp