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Woodburn, City of

Sewage treatment plant, major discharger, Woodburn, Oregon. NPDES permit OR0020001 expired Nov 30, 2009; its limits still apply. Last 12 months: no values over a limit, 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (46 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (63)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Temperature, water deg. centigrademonthly averagereport only (deg C)May–Oct
Flow ratemonthly averagereport only (cfs)all year
Oxygen, dissolved [DO]daily average minimum≥ 6.5 mg/LJun–Oct
Oxygen, dissolved [DO]daily average minimumreport only (mg/L)Jan, Feb, Mar, Apr, May, Nov, Dec
pHdaily minimumreport only (SU)all year
pHdaily maximumreport only (SU)all year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly average≤ 10 mg/LMay–Oct
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 420 lb/dMay–Oct
Solids, total suspendedmonthly average≤ 1100 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendeddaily maximum≤ 830 lb/dMay–Oct
Solids, total suspendeddaily maximum≤ 2200 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≤ 420 lb/dMay–Oct
Solids, total suspendedmonthly average≤ 1100 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≤ 15 mg/LMay–Oct
Solids, total suspendedweekly average≤ 40 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedweekly average≤ 630 lb/dMay–Oct
Solids, total suspendedweekly average≤ 1700 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)May–Oct
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)May–Oct
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)May–Oct
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)May–Oct
Phosphorus, total [as P]monthly averagereport only (mg/L)May–Oct
Phosphorus, total [as P]daily maximumreport only (mg/L)May–Oct
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all 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 loadmonthly averagereport only (mkcal/day)May–Oct
Ultraviolet light dosagemonthly averagereport only (mW-sec/cm2)all year
pH, maximumdaily maximumreport only (SU)all year
pH, minimumdaily minimumreport only (SU)all year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
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≤ 420 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 940 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 830 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 1900 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≤ 420 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 940 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≤ 630 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 1400 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
pH range excursions, > 60 minutestotal≤ 0 occur/moall year
pH range excursions, monthly total accumtotal≤ 446 minall 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/OR0020001 · MCP: https://passage-data.com/mcp