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Viola Water and Sewer District

Sewage treatment plant, Viola, Idaho. NPDES permit ID0026310 expired Apr 30, 2025; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Last report on file
April 2026
Oct 2024 – Sep 2025
0 values over a limit, 38 required values missing, 6 of 9 reports late

Limits in force (34)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademonthly averagereport only (deg C)Feb–Apr001
Temperature, water deg. centigradedaily maximumreport only (deg C)Feb–Apr001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LFeb–Apr001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LFeb–Apr001
BOD, 5-day, 20 deg. Cmonthly average≤ 16 lb/dFeb–Apr001
BOD, 5-day, 20 deg. Cweekly average≤ 24 lb/dFeb–Apr001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)Feb–Apr001
pHinstantaneous minimum≥ 6.5 SUFeb–Apr001
pHinstantaneous maximum≤ 9 SUFeb–Apr001
Solids, total suspendedmonthly average≤ 30 mg/LFeb–Apr001
Solids, total suspendedweekly average≤ 45 mg/LFeb–Apr001
Solids, total suspendedmonthly average≤ 16 lb/dFeb–Apr001
Solids, total suspendedweekly average≤ 24 lb/dFeb–Apr001
Solids, total suspendedmonthly averagereport only (mg/L)Feb–Apr001
Phosphorus, total [as P]monthly averagereport only (mg/L)Feb–Apr001
Phosphorus, total [as P]daily maximumreport only (mg/L)Feb–Apr001
E. coli, MTEC-MFmonthly geometric mean≤ 126 #/100mLFeb–Apr001
E. coli, MTEC-MFinstantaneous maximumreport only (#/100mL)Feb–Apr001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Feb–Apr001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Feb–Apr001
Chlorine, total residualmonthly average≤ .05 mg/LFeb–Apr001
Chlorine, total residualdaily maximum≤ .094 mg/LFeb–Apr001
Chlorine, total residualmonthly average≤ .025 lb/dFeb–Apr001
Chlorine, total residualdaily maximum≤ .047 lb/dFeb–Apr001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %Feb–Apr001
Solids, suspended percent removalmonthly average minimum≥ 85 %Feb–Apr001
Temperature, water deg. centigrademonthly averagereport only (deg C)Feb–AprREC1
Temperature, water deg. centigradedaily maximumreport only (deg C)Feb–AprREC1
Stream flow, instantaneousmonthly averagereport only (MGD)Feb–AprREC1
Stream flow, instantaneousinstantaneous minimumreport only (MGD)Feb–AprREC1
pHinstantaneous minimumreport only (SU)Feb–AprREC1
pHinstantaneous maximumreport only (SU)Feb–AprREC1
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Feb–AprREC1
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Feb–AprREC1

How strict are these limits?

Cited limits by parameter: Idaho'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/ID0026310 · MCP: https://passage-data.com/mcp