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

Kooskia, City of

Sewage treatment plant, Kooskia, Idaho. NPDES permit ID0021814 expired Dec 31, 2024; its limits still apply. Last 12 months: over a limit 8 times (last June 2026), 6 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (18 values), form Y yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
5 values over a limit, 0 required values missing, 0 of 13 reports late

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

Period endingParameterReportedLimitOver by
February 2026Solids, total suspended, monthly average79.6 lb/d≤ 74 lb/d8%
April 2026Solids, suspended percent removal, monthly average minimum59.7 %≥ 65 %15%
April 2026Solids, total suspended, monthly average63.8 mg/L≤ 45 mg/L42%
April 2026Solids, total suspended, monthly average99.57 lb/d≤ 74 lb/d35%
April 2026Solids, total suspended, weekly average170.8 lb/d≤ 107 lb/d60%
April 2026Solids, total suspended, weekly average98 mg/L≤ 65 mg/L51%
June 2026Solids, total suspended, monthly average49.25 mg/L≤ 45 mg/L9%
June 2026Solids, total suspended, weekly average78 mg/L≤ 65 mg/L20%

Limits in force (25)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximum≤ 26 deg Call year
Oxygen, dissolved [DO]daily maximumreport only (mg/L)all year
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≤ 50 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 74 lb/dall year
pHinstantaneous minimum≥ 6.5 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 65 mg/Lall year
Solids, total suspendedmonthly average≤ 74 lb/dall year
Solids, total suspendedweekly average≤ 107 lb/dall year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Oil and greasedaily maximumreport only (mg/L)all year
E. coli, MTEC-MFgeometric mean≤ 126 CFU/100mLall year
E. coli, MTEC-MFinstantaneous maximum≤ 406 CFU/100mLall 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
Solids, total dissolveddaily maximumreport only (mg/L)all year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 65 %all year

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/ID0021814 · MCP: https://passage-data.com/mcp