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Troy, City of

Sewage treatment plant, Troy, Idaho. NPDES permit ID0023604, in force until Jul 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form M monthly (35 values), outfall 001 form MI monthly (4 values), outfall REC1 form M monthly (8 values), outfall REC1 form MD monthly (2 values)
Renewal application due
Feb 1, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
14 values over a limit, 0 required values missing, 0 of 48 reports late

Limits in force (49)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademonthly averagereport only (deg C)all year001
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all year001
Oxygen, dissolved [DO]monthly averagereport only (mg/L)all year001
Oxygen, dissolved [DO]daily maximumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 48 lb/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 71 lb/dall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
pHinstantaneous minimum≥ 6.5 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 42.8 lb/dall year001
Solids, total suspendedweekly average≤ 71 lb/dall year001
Solids, total suspendeddaily maximum≤ 114.1 lb/dall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendeddaily maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ 20.75 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 28 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 32.9 lb/dall year001
Nitrogen, ammonia total [as N]daily maximum≤ 44.4 lb/dall year001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all 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
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualmonthly average≤ .05 mg/Lall year001
Chlorine, total residualdaily maximum≤ .05 mg/Lall year001
Chlorine, total residualmonthly average≤ .08 lb/dall year001
Chlorine, total residualdaily maximum≤ .08 lb/dall year001
E. colimonthly geometric mean≤ 126 #/100mLall year001
E. colidaily maximum≤ 406 #/100mLall year001
Enterococcimonthly geometric mean≤ 35 #/100mLall year001
Enterococcidaily maximum≤ 130 #/100mLall year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all yearREC1
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all yearREC1
Streamflowinstantaneous minimumreport only (cfs)all yearREC1
Streamflowinstantaneous maximumreport only (cfs)all yearREC1
Oxygen, dissolved [DO]instantaneous minimumreport only (mg/L)all yearREC1
Oxygen, dissolved [DO]instantaneous minimumreport only (mg/L)all yearREC1
pHinstantaneous minimumreport only (SU)all yearREC1
pHinstantaneous maximumreport only (SU)all yearREC1
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all yearREC1
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all yearREC1

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/ID0023604 · MCP: https://passage-data.com/mcp