Passage Data · Check a report · Use it from your AI

Harrison, City of

Sewage treatment plant, Harrison, Idaho. NPDES permit ID0021997 expired Aug 31, 2023; its limits still apply. Last 12 months: over a limit once (last March 2026), 12 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (25 values), outfall 001 form D monthly (4 values), outfall 001 form E monthly (4 values), outfall REC form A monthly (2 values), outfall REC form B monthly (2 values), outfall REC form C monthly (1 value), and 2 more forms
Last report on file
August 2026
Oct 2024 – Sep 2025
7 values over a limit, 192 required values missing, 48 of 73 reports late

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

Period endingParameterReportedLimit
March 2026pH, instantaneous maximum9.09 SU≤ 9 SU

Limits in force (45)

ParameterStatisticLimitMonthsOutfall
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≤ 8 lb/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 11 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≤ 11 lb/dall year001
Solids, total suspendedweekly average≤ 16 lb/dall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ 3 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 3 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 9 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 9 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ .8 lb/dall year001
Nitrogen, ammonia total [as N]monthly average≤ .8 lb/dall year001
Nitrogen, ammonia total [as N]daily maximum≤ 2 lb/dall year001
Nitrogen, ammonia total [as N]daily maximum≤ 2 lb/dall year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]daily 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
Chlorine, total residualmonthly average≤ 50 ug/Lall year001
Chlorine, total residualdaily maximum≤ 50 ug/Lall year001
Chlorine, total residualmonthly average≤ .013 lb/dall year001
Chlorine, total residualdaily maximum≤ .013 lb/dall year001
BOD, 5-day, percent removalmonthly average minimum≥ 78 %all year001
Solids, suspended percent removalmonthly average minimum≥ 75 %all year001
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all yearREC
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all yearREC
Oxygen, dissolved [DO]instantaneous minimumreport only (mg/L)all yearREC
Oxygen, dissolved [DO]instantaneous minimumreport only (mg/L)all yearREC
Oxygen, dissolved [DO]instantaneous maximumreport only (mg/L)all yearREC
pHinstantaneous minimumreport only (SU)all yearREC
pHinstantaneous maximumreport only (SU)all yearREC
pHinstantaneous minimumreport only (SU)all yearREC
pHinstantaneous maximumreport only (SU)all yearREC
Phosphorus, total [as P]instantaneous maximumreport only (mg/L)all yearREC
Phosphorus, total [as P]instantaneous maximumreport only (mg/L)all yearREC
Phosphorus, total [as P]instantaneous maximumreport only (mg/L)May–SepREC

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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/ID0021997 · MCP: https://passage-data.com/mcp