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Notus, City of

Sewage treatment plant, Notus, Idaho. NPDES permit ID0021016 expired Sep 30, 2018; its limits still apply. Last 12 months: over a limit once (last March 2026), 2 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (37 values), outfall REC form A monthly (6 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
6 values over a limit, 0 required values missing, 1 of 24 reports late

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

Period endingParameterReportedLimitOver by
March 2026BOD, 5-day, 20 deg. C, weekly average57 lb/d≤ 55 lb/d4%

Limits in force (47)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademaximum daily averagereport only (deg C)all year001
Temperature, water deg. centigraderolling averagereport only (deg C)all year001
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all year001
Oxygen, dissolved [DO]instantaneous minimumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 40 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 60 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 37 lb/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 55 lb/dall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
pHinstantaneous minimum≥ 6.5 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 45 mg/Lall year001
Solids, total suspendedweekly average≤ 65 mg/Lall year001
Solids, total suspendedmonthly average≤ 33 lb/dall year001
Solids, total suspendedweekly average≤ 50 lb/dall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ 24 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 32 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 22 lb/dall year001
Nitrogen, ammonia total [as N]daily maximum≤ 30 lb/dall year001
Nitrogen, Kjeldahl, total [as N]instantaneous maximumreport only (mg/L)all year001
Nitrite + Nitrate total [as N]instantaneous maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly average≤ 70 ug/LMay–Sep001
Phosphorus, total [as P]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Oct, Nov, Dec001
Phosphorus, total [as P]daily maximum≤ 140 ug/LMay–Sep001
Phosphorus, total [as P]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, Oct, Nov, Dec001
Phosphorus, total [as P]monthly average≤ .064 lb/dMay–Sep001
Phosphorus, total [as P]monthly averagereport only (lb/d)Jan, Feb, Mar, Apr, Oct, Nov, Dec001
Phosphorus, total [as P]daily maximum≤ .128 lb/dMay–Sep001
Phosphorus, total [as P]daily maximumreport only (lb/d)Jan, Feb, Mar, Apr, Oct, Nov, Dec001
Oil and greaseinstantaneous maximumreport only (mg/L)all year001
E. coli, MTEC-MFmonthly geometric mean≤ 126 #/100mLall year001
E. coli, MTEC-MFinstantaneous maximum≤ 406 #/100mLall year001
Floating solids, waste or visible foam-visualmonthly maximum≤ 0 N=0;Y=1all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Solids, total dissolvedinstantaneous maximumreport only (mg/L)all year001
BOD, 5-day, percent removalmonthly average minimum≥ 70 %all year001
Solids, suspended percent removalmonthly average minimum≥ 70 %all year001
Oil and grease visualmonthly maximum≤ 0 N=0;Y=1all year001
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year001
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all yearREC
Streamflowdaily averagereport only (cfs)all yearREC
pHinstantaneous minimumreport only (SU)all yearREC
pHinstantaneous maximumreport only (SU)all yearREC
Nitrogen, ammonia total [as N]instantaneous maximumreport only (mg/L)all yearREC
Phosphorus, total [as P]instantaneous maximumreport only (ug/L)all yearREC

How strict are these limits?

Cited limits by parameter: Idaho'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/ID0021016 · MCP: https://passage-data.com/mcp