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Metropolitan Wastewater Management Commission

Sewage treatment plant, major discharger, Eugene, Oregon. NPDES permit OR0031224, in force until Sep 30, 2027. Last 12 months: over a limit once (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form 0 monthly (35 values), form G monthly (4 values), form RW monthly (3 values)
Renewal application due
Apr 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
2 values over a limit, 12 required values missing, 2 of 46 reports late

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

Period endingParameterReportedLimitOver by
August 2026E. coli, daily maximum520 #/100mL≤ 406 #/100mL28%

Limits in force (62)

ParameterStatisticLimitMonths
Temperature, water deg. centigrademonthly averagereport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Temperature, water deg. centigrademonthly maximumreport only (deg C)all year
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year
Flow ratedaily maximumreport only (cfs)Apr–Oct
Flow ratemaximum 7-day averagereport only (cfs)Apr–Oct
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
pHmonthly minimumreport only (SU)all year
pHmonthly maximumreport only (SU)all year
Solids, total suspendedmonthly averagereport only (mg/L)May–Oct
Solids, total suspendedmonthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 10 mg/LMay–Oct
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 4100 lb/dMay–Oct
Solids, total suspendedmonthly average≤ 19000 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendeddaily maximum≤ 8200 lb/dMay–Oct
Solids, total suspendeddaily maximum≤ 38000 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 10 mg/LMay–Oct
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 4100 lb/dMay–Oct
Solids, total suspendedmonthly average≤ 19000 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendeddaily maximumreport only (lb/d)May–Oct
Solids, total suspendeddaily maximumreport only (lb/d)Jan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedweekly average≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedweekly average≤ 15 mg/LMay–Oct
Solids, total suspendedweekly average≤ 28000 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedweekly average≤ 6100 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 12 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 22 mg/LMay–Oct
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec
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≤ .11 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≤ 780 mkcal/dayMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)May–Oct
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 4100 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 16000 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 8200 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 32000 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 4100 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 16000 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (lb/d)May–Oct
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (lb/d)Jan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 6100 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 24000 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Chlorine usagemonthly averagereport only (lb/d)all year

How strict are these limits?

Cited limits by parameter: Oregon'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/OR0031224 · MCP: https://passage-data.com/mcp