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Powers, City of

Sewage treatment plant, Powers, Oregon. NPDES permit OR0026930, in force until Jan 31, 2029. Last 12 months: over a limit 36 times (last September 2026), 10 of 30 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (25 values), form G monthly (4 values), form RW monthly (1 value)
Last report on file
September 2026
Oct 2024 – Sep 2025
41 values over a limit, 5 required values missing, 6 of 30 reports late

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

All 36 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, 5-day, 20 deg. C, monthly average50.1 mg/L≤ 30 mg/L67%
October 2025BOD, 5-day, 20 deg. C, weekly average65.5 mg/L≤ 45 mg/L46%
October 2025BOD, 5-day, percent removal, monthly average minimum80.3 %≥ 85 %31%
November 2025BOD, 5-day, 20 deg. C, monthly average42.5 mg/L≤ 30 mg/L42%
November 2025BOD, 5-day, 20 deg. C, weekly average50.7 mg/L≤ 45 mg/L13%
November 2025BOD, 5-day, percent removal, monthly average minimum75.7 %≥ 85 %62%
November 2025Solids, suspended percent removal, monthly average minimum83.1 %≥ 85 %13%
December 2025BOD, 5-day, 20 deg. C, monthly average44.6 mg/L≤ 30 mg/L49%
December 2025BOD, 5-day, 20 deg. C, weekly average67.1 mg/L≤ 45 mg/L49%
December 2025BOD, 5-day, percent removal, monthly average minimum72.7 %≥ 85 %82%
December 2025Solids, suspended percent removal, monthly average minimum67.5 %≥ 85 %117%
December 2025Solids, total suspended, monthly average39.3 mg/L≤ 30 mg/L31%
December 2025Solids, total suspended, weekly average121.96 lb/d≤ 110 lb/d11%
December 2025Solids, total suspended, weekly average55.9 mg/L≤ 45 mg/L24%
January 2026BOD, 5-day, 20 deg. C, monthly average35.4 mg/L≤ 30 mg/L18%
January 2026BOD, 5-day, 20 deg. C, weekly average48.5 mg/L≤ 45 mg/L8%
January 2026BOD, 5-day, percent removal, monthly average minimum67.6 %≥ 85 %116%
January 2026Solids, suspended percent removal, monthly average minimum78.9 %≥ 85 %41%
February 2026BOD, 5-day, 20 deg. C, monthly average43.5 mg/L≤ 30 mg/L45%
February 2026BOD, 5-day, 20 deg. C, weekly average54.1 mg/L≤ 45 mg/L20%
February 2026BOD, 5-day, percent removal, monthly average minimum70.3 %≥ 85 %98%
February 2026Solids, suspended percent removal, monthly average minimum71 %≥ 85 %93%
March 2026BOD, 5-day, 20 deg. C, monthly average36 mg/L≤ 30 mg/L20%
March 2026BOD, 5-day, percent removal, monthly average minimum57.8 %≥ 85 %181%
March 2026Solids, suspended percent removal, monthly average minimum68.6 %≥ 85 %109%
April 2026BOD, 5-day, percent removal, monthly average minimum72.2 %≥ 85 %85%
April 2026Solids, suspended percent removal, monthly average minimum74.5 %≥ 85 %70%
May 2026BOD, 5-day, 20 deg. C, monthly average41.5 mg/L≤ 30 mg/L38%
May 2026BOD, 5-day, 20 deg. C, weekly average46.5 mg/L≤ 45 mg/L3%
May 2026BOD, 5-day, percent removal, monthly average minimum82.7 %≥ 85 %15%
June 2026BOD, 5-day, 20 deg. C, monthly average34.2 mg/L≤ 30 mg/L14%
June 2026BOD, 5-day, 20 deg. C, weekly average46.5 mg/L≤ 45 mg/L3%
July 2026BOD, 5-day, 20 deg. C, monthly average32.7 mg/L≤ 30 mg/L9%
August 2026BOD, 5-day, 20 deg. C, monthly average38.5 mg/L≤ 30 mg/L28%
September 2026BOD, 5-day, 20 deg. C, monthly average42.7 mg/L≤ 30 mg/L42%
September 2026BOD, 5-day, 20 deg. C, weekly average66 mg/L≤ 45 mg/L47%

Limits in force (30)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Flow ratedaily averagereport only (cfs)May–Oct
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 75 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 150 lb/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 110 lb/dall year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
pHmonthly minimumreport only (SU)all year
pHmonthly maximumreport only (SU)all year
Alkalinity, total [as CaCO3]quarterly maximumreport only (mg/L)all year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 75 lb/dall year
Solids, total suspendeddaily maximum≤ 150 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 110 lb/dall 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
Chlorine, total residualmonthly average≤ .05 mg/Lall year
Chlorine, total residualdaily maximum≤ .05 mg/Lall year
E. colimonthly geometric mean≤ 126 #/100mLall year
E. colidaily maximum≤ 406 #/100mLall year
E. colimonthly geometric mean≤ 126 #/100mLall year
E. colidaily maximumreport only (#/100mL)all year
Excess thermal loadmaximum 7-day average≤ 5.95 mkcal/dayMay–Oct
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: Oregon's rules and the federal ones.

Check this month's numbers Email me before each report is due

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Your permit document is the final word. As JSON: /api/v1/permits/OR0026930 · MCP: https://passage-data.com/mcp