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Eastern Idaho Regional Sewer District

Sewage treatment plant, major discharger, Shelley, Idaho. NPDES permit ID0020133 expired May 31, 2019; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (21 values), form B monthly (4 values), form B1 monthly (3 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 24 reports late

Limits in force (34)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 500 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 751 lb/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
pHinstantaneous minimum≥ 6.5 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 179 lb/dall year
Solids, total suspendedweekly average≤ 377 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedannual average≤ 115 lb/dDec
Nitrogen, ammonia total [as N]monthly maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (ug/L)all year
Phosphorus, total [as P]weekly averagereport only (ug/L)all year
Phosphorus, total [as P]monthly average≤ 52 lb/dall year
Phosphorus, total [as P]weekly average≤ 78 lb/dall year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (ug/L)all year
Phosphorus, total [as P]monthly average≤ 10.7 lb/dall year
Phosphorus, total [as P]monthly average≤ 10.7 lb/dall year
Phosphorus, total [as P]weekly average≤ 20.4 lb/dall year
Phosphorus, total [as P]weekly average≤ 20.4 lb/dall year
Phosphorus, total [as P]annual average≤ 6.9 lb/dDec
Phosphorus, total [as P]annual average≤ 6.9 lb/dDec
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 averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
BOD, 5-day, percent removalmonthly average minimum> 85 %all year
Solids, suspended percent removalmonthly average 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/ID0020133 · MCP: https://passage-data.com/mcp