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Weiser, City of

Sewage treatment plant, major discharger, Weiser, Idaho. NPDES permit ID0020290 expired Dec 31, 2016; its limits still apply. Last 12 months: no values over a limit, 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 1 days after each period: form A monthly (28 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (32)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitmonthly average≤ 72 deg Fall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 600 lb/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 900 lb/dall year
pHinstantaneous minimum≥ 6.5 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 600 lb/dall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 900 lb/dall year
Nitrogen, ammonia total [as N]monthly maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly average≤ 14 lb/dMay–Sep
Phosphorus, total [as P]monthly averagereport only (lb/d)Jan, Feb, Mar, Apr, Oct, Nov, Dec
Phosphorus, total [as P]weekly average≤ 21 lb/dMay–Sep
Phosphorus, total [as P]maximum weekly averagereport only (lb/d)Jan, Feb, Mar, Apr, Oct, Nov, Dec
Phosphorus, total [as P]monthly average≤ 72 lb/dMay–Sep
Phosphorus, total [as P]monthly averagereport only (lb/d)Jan, Feb, Mar, Apr, Oct, Nov, Dec
Phosphorus, total [as P]weekly average≤ 108 lb/dMay–Sep
Phosphorus, total [as P]maximum weekly averagereport only (lb/d)Jan, Feb, Mar, Apr, Oct, Nov, Dec
E. coli, MTEC-MFmonthly geometric mean≤ 126 #/100mLall year
E. coli, MTEC-MFinstantaneous maximum≤ 406 #/100mLall year
Floating solids, waste or visible foam-visualmonthly maximum≤ 0 N=0;Y=1all year
Flow, in conduit or thru treatment plantmonthly maximum≤ 2.4 MGDall year
Chlorine, total residualmonthly average≤ .5 mg/Lall year
Chlorine, total residualmonthly average≤ 10 lb/dall year
Chlorine, total residualmaximum weekly average≤ .75 mg/Lall year
Chlorine, total residualmaximum weekly average≤ 15 lb/dall year
Mercury, total recoverablequarterly maximumreport only (ug/L)all year
BOD, 5-day, percent removalmonthly minimum≥ 85 %all year
Solids, suspended percent removalmonthly minimum≥ 85 %all year
Oil and grease visualmonthly maximum≤ 0 N=0;Y=1all year

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/ID0020290 · MCP: https://passage-data.com/mcp