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Plummer, City of

Sewage treatment plant, Plummer, Idaho. NPDES permit ID0022781 expired Aug 31, 2025; its limits still apply. Last 12 months: over a limit 26 times (last August 2026), 2 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (36 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
38 values over a limit, 0 required values missing, 4 of 12 reports late

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

All 26 values over a limit
Period endingParameterReportedLimitOver by
December 2025Phosphorus, total [as P], monthly average.99 lb/d≤ .133 lb/d644%
December 2025Phosphorus, total [as P], monthly average74 ug/L≤ 50 ug/L48%
December 2025Phosphorus, total [as P], weekly average1200 ug/L≤ 131 ug/L816%
December 2025Phosphorus, total [as P], weekly average4.41 lb/d≤ .35 lb/d1160%
January 2026Phosphorus, total [as P], monthly average126 lb/d≤ .267 lb/d47091%
January 2026Phosphorus, total [as P], weekly average1.97 lb/d≤ .803 lb/d145%
January 2026Phosphorus, total [as P], weekly average1160 ug/L≤ 301 ug/L285%
February 2026Phosphorus, total [as P], monthly average139 ug/L≤ 100 ug/L39%
March 2026Phosphorus, total [as P], monthly average.529 lb/d≤ .267 lb/d98%
March 2026Phosphorus, total [as P], monthly average241 ug/L≤ 100 ug/L141%
March 2026Phosphorus, total [as P], weekly average1.34 lb/d≤ .803 lb/d67%
March 2026Phosphorus, total [as P], weekly average572 ug/L≤ 301 ug/L90%
April 2026Phosphorus, total [as P], monthly average.349 lb/d≤ .133 lb/d162%
April 2026Phosphorus, total [as P], monthly average380 ug/L≤ 50 ug/L660%
April 2026Phosphorus, total [as P], weekly average.63 lb/d≤ .35 lb/d80%
April 2026Phosphorus, total [as P], weekly average657 ug/L≤ 131 ug/L402%
May 2026Phosphorus, total [as P], monthly average.207 lb/d≤ .133 lb/d56%
May 2026Phosphorus, total [as P], monthly average286 ug/L≤ 50 ug/L472%
May 2026Phosphorus, total [as P], weekly average348 ug/L≤ 131 ug/L166%
June 2026Phosphorus, total [as P], monthly average.416 lb/d≤ .133 lb/d213%
June 2026Phosphorus, total [as P], monthly average177 ug/L≤ 50 ug/L254%
June 2026Phosphorus, total [as P], weekly average305 ug/L≤ 131 ug/L133%
July 2026Phosphorus, total [as P], monthly average289 ug/L≤ 100 ug/L189%
July 2026Phosphorus, total [as P], weekly average341 ug/L≤ 301 ug/L13%
August 2026Phosphorus, total [as P], monthly average.293 lb/d≤ .133 lb/d120%
August 2026Phosphorus, total [as P], weekly average.4 lb/d≤ .35 lb/d14%

Limits in force (36)

ParameterStatisticLimitMonths
Temperature, water deg. centigrademonthly maximumreport only (deg C)all year
Temperature, water deg. centigrademaximum daily averagereport only (deg C)all year
Temperature, water deg. centigrade7-day averagereport only (deg C)all year
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 27 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 40 lb/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all year
pHinstantaneous minimum≥ 6.5 SUall year
pHinstantaneous maximum≤ 8.5 SUall year
Solids, total suspendedmonthly average≤ 17 mg/Lall year
Solids, total suspendedweekly average≤ 25 mg/Lall year
Solids, total suspendedmonthly average≤ 45 lb/dall year
Solids, total suspendedweekly average≤ 67 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 2.5 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 7.8 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 6.67 lb/dall year
Nitrogen, ammonia total [as N]daily maximum≤ 20.8 lb/dall year
Phosphorus, total [as P]monthly average≤ 50 ug/Lall year
Phosphorus, total [as P]monthly average≤ 100 ug/Lall year
Phosphorus, total [as P]weekly average≤ 131 ug/Lall year
Phosphorus, total [as P]weekly average≤ 301 ug/Lall year
Phosphorus, total [as P]monthly average≤ .133 lb/dall year
Phosphorus, total [as P]monthly average≤ .267 lb/dall year
Phosphorus, total [as P]weekly average≤ .35 lb/dall year
Phosphorus, total [as P]weekly average≤ .803 lb/dall year
E. coli, MTEC-MFmonthly geometric mean≤ 126 CFU/100mLall year
E. coli, MTEC-MFinstantaneous maximum≤ 235 CFU/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

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/ID0022781 · MCP: https://passage-data.com/mcp