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Sutherlin, City of

Sewage treatment plant, Sutherlin, Oregon. NPDES permit OR0020842, in force until Nov 30, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (1 value), outfall 001 form G monthly (4 values), outfall 001 form Q quarterly (1 value), outfall 002 form A monthly (31 values), outfall 002 form B monthly (1 value), outfall 002 form FP monthly (3 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 67 reports late

Limits in force (144)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademonthly averagereport only (deg C)Jan, Feb, Mar, Apr, May, Nov, Dec001
Temperature, water deg. centigradedaily maximumreport only (deg C)Jan, Feb, Mar, Apr, May, Nov, Dec001
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)Jan, Feb, Mar, Apr, May, Nov, Dec001
Flow ratemonthly averagereport only (cfs)Jan, Feb, Mar, Apr, May, Nov, Dec001
Flow ratedaily maximumreport only (cfs)Jan, Feb, Mar, Apr, May, Nov, Dec001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Dec001
BOD, 5-day, 20 deg. Cmonthly average≤ 560 lb/dJan, Feb, Mar, Apr, Dec001
BOD, 5-day, 20 deg. Cdaily maximum≤ 1100 lb/dJan, Feb, Mar, Apr, Dec001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LMay001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LNov001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LNov001
BOD, 5-day, 20 deg. Cmonthly average≤ 560 lb/dMay001
BOD, 5-day, 20 deg. Cweekly average≤ 170 lb/dNov001
BOD, 5-day, 20 deg. Cmonthly average≤ 440 lb/dNov001
BOD, 5-day, 20 deg. Cdaily maximum≤ 1100 lb/dMay001
BOD, 5-day, 20 deg. Cdaily maximum≤ 260 lb/dNov001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)May001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LNov001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LNov001
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)May001
BOD, 5-day, 20 deg. Cweekly average≤ 320 lb/dNov001
BOD, 5-day, 20 deg. Cmonthly average≤ 440 lb/dNov001
BOD, 5-day, 20 deg. Cdaily maximumreport only (lb/d)May001
BOD, 5-day, 20 deg. Cdaily maximum≤ 480 lb/dNov001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LNov001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LNov001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LMay001
BOD, 5-day, 20 deg. Cweekly average≤ 440 lb/dNov001
BOD, 5-day, 20 deg. Cmonthly average≤ 440 lb/dNov001
BOD, 5-day, 20 deg. Cweekly average≤ 840 lb/dMay001
BOD, 5-day, 20 deg. Cdaily maximum≤ 660 lb/dNov001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LNov001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LNov001
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)May001
BOD, 5-day, 20 deg. Cweekly average≤ 660 lb/dNov001
BOD, 5-day, 20 deg. Cmonthly average≤ 440 lb/dNov001
BOD, 5-day, 20 deg. Cweekly averagereport only (lb/d)May001
BOD, 5-day, 20 deg. Cdaily maximum≤ 880 lb/dNov001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LJan, Feb, Mar, Apr, Dec001
BOD, 5-day, 20 deg. Cweekly average≤ 840 lb/dJan, Feb, Mar, Apr, Dec001
pHdaily minimum≥ 6.3 SUJan, Feb, Mar, Apr, May, Nov, Dec001
pHdaily maximum≤ 9 SUJan, Feb, Mar, Apr, May, Nov, Dec001
pHmonthly minimumreport only (SU)all year001
pHmonthly maximumreport only (SU)all year001
Alkalinity, total [as CaCO3]quarterly maximumreport only (mg/L)Jan, Feb, Mar, Apr, May, Nov, Dec001
Alkalinity, total [as CaCO3]quarterly maximumreport only (mg/L)all year001
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Dec001
Solids, total suspendedmonthly average≤ 560 lb/dJan, Feb, Mar, Apr, Dec001
Solids, total suspendeddaily maximum≤ 1100 lb/dJan, Feb, Mar, Apr, Dec001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendedmonthly average≤ 30 mg/LMay001
Solids, total suspendedweekly average≤ 45 mg/LNov001
Solids, total suspendedmonthly average≤ 30 mg/LNov001
Solids, total suspendedmonthly average≤ 560 lb/dMay001
Solids, total suspendedweekly average≤ 170 lb/dNov001
Solids, total suspendedmonthly average≤ 440 lb/dNov001
Solids, total suspendeddaily maximum≤ 1100 lb/dMay001
Solids, total suspendeddaily maximum≤ 260 lb/dNov001
Solids, total suspendedmonthly averagereport only (mg/L)May001
Solids, total suspendedweekly average≤ 45 mg/LNov001
Solids, total suspendedmonthly average≤ 30 mg/LNov001
Solids, total suspendedmonthly averagereport only (lb/d)May001
Solids, total suspendedweekly average≤ 320 lb/dNov001
Solids, total suspendedmonthly average≤ 440 lb/dNov001
Solids, total suspendeddaily maximumreport only (lb/d)May001
Solids, total suspendeddaily maximum≤ 480 lb/dNov001
Solids, total suspendedweekly average≤ 45 mg/LNov001
Solids, total suspendedmonthly average≤ 30 mg/LNov001
Solids, total suspendedweekly average≤ 45 mg/LMay001
Solids, total suspendedweekly average≤ 440 lb/dNov001
Solids, total suspendedmonthly average≤ 440 lb/dNov001
Solids, total suspendedweekly average≤ 840 lb/dMay001
Solids, total suspendeddaily maximum≤ 660 lb/dNov001
Solids, total suspendedweekly average≤ 45 mg/LNov001
Solids, total suspendedmonthly average≤ 30 mg/LNov001
Solids, total suspendedweekly averagereport only (mg/L)May001
Solids, total suspendedweekly average≤ 660 lb/dNov001
Solids, total suspendedmonthly average≤ 440 lb/dNov001
Solids, total suspendedweekly averagereport only (lb/d)May001
Solids, total suspendeddaily maximum≤ 880 lb/dNov001
Solids, total suspendedweekly average≤ 45 mg/LJan, Feb, Mar, Apr, Dec001
Solids, total suspendedweekly average≤ 840 lb/dJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 11.8 mg/LJan, Feb, Mar, Apr, May, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 23.5 mg/LJan, Feb, Mar, Apr, May, Nov, Dec001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Jan, Feb, Mar, Apr, Nov, Dec001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)Jan, Feb, Mar, Apr, Nov, Dec001
Flow, in conduit or thru treatment plantdaily maximum≤ 0 MGDJun–Oct001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)May001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)May001
Flow, in conduit or thru treatment plantdaily maximum≤ 0 MGDMay001
Chlorine, total residualmonthly average≤ .05 mg/LJan, Feb, Mar, Apr, May, Nov, Dec001
Chlorine, total residualdaily maximum≤ .05 mg/LJan, Feb, Mar, Apr, May, Nov, Dec001
E. colimonthly geometric mean≤ 126 #/100mLJan, Feb, Mar, Apr, May, Nov, Dec001
E. colidaily maximum≤ 406 #/100mLJan, Feb, Mar, Apr, May, Nov, Dec001
E. colimonthly geometric mean≤ 126 #/100mLJan, Feb, Mar, Apr, May, Nov, Dec001
E. colidaily maximumreport only (#/100mL)Jan, Feb, Mar, Apr, May, Nov, Dec001
Excess thermal loadmaximum 7-day average≤ 21 mkcal/dayMay001
Excess thermal loadmaximum 7-day average≤ 6.9 mkcal/dayJan, Feb, Mar, Apr, May, Nov, Dec001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %Jan, Feb, Mar, Apr, May, Nov, Dec001
Solids, suspended percent removalmonthly average minimum≥ 85 %Jan, Feb, Mar, Apr, May, Nov, Dec001
Temperature, water deg. centigrademonthly averagereport only (deg C)all year002
Temperature, water deg. centigradedaily maximumreport only (deg C)all year002
Temperature, water deg. centigrademonthly maximumreport only (deg C)all year002
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year002
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year002
BOD, 5-day, 20 deg. Cvaluereport only (mg/L)Jan, Feb, Mar, Apr, May, Nov, Dec002
BOD, 5-day, 20 deg. Cmonthly average≤ 73 lb/dall year002
BOD, 5-day, 20 deg. Cdaily maximum≤ 150 lb/dall year002
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/Lall year002
BOD, 5-day, 20 deg. Cweekly average≤ 110 lb/dall year002
pHdaily minimum≥ 6.5 SUall year002
pHdaily minimumreport only (SU)Jan, Feb, Mar, Apr, May, Nov, Dec002
pHdaily maximum≤ 8.5 SUall year002
pHdaily maximumreport only (SU)Jan, Feb, Mar, Apr, May, Nov, Dec002
pHmonthly maximumreport only (SU)all year002
Alkalinity, total [as CaCO3]monthly maximumreport only (mg/L)all year002
Solids, total suspendedmonthly average≤ 10 mg/Lall year002
Solids, total suspendedmonthly average≤ 73 lb/dall year002
Solids, total suspendeddaily maximum≤ 150 lb/dall year002
Solids, total suspendedweekly average≤ 15 mg/Lall year002
Solids, total suspendedweekly average≤ 110 lb/dall year002
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall year002
Nitrogen, ammonia total [as N]daily maximum≤ 3.5 mg/Lall year002
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year002
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Jan, Feb, Mar, Apr, Nov, Dec002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximum≤ 0 MGDJun–Oct002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)Jan, Feb, Mar, Apr, Nov, Dec002
Flow, in conduit or thru treatment plantdaily maximum≤ 0 MGDMay002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)May002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)May002
Chlorine, total residualmonthly average≤ .05 mg/Lall year002
Chlorine, total residualdaily maximum≤ .05 mg/Lall year002
E. colimonthly geometric mean≤ 126 #/100mLall year002
E. colidaily maximum≤ 406 #/100mLall year002
E. colimonthly geometric mean≤ 126 #/100mLall year002
E. colidaily maximumreport only (#/100mL)all year002
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year002
Solids, suspended percent removalmonthly average minimum≥ 85 %all year002
Chlorine usagemonthly averagereport only (lb/d)all year002
Chlorine usagedaily maximumreport only (lb/d)all year002

New limits from Feb 1, 2029

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrite + Nitrate total [as N], daily maximum24.5 mg/Lnew4.015 mg/L (6 values)0.164×
Nitrite + Nitrate total [as N], monthly average10 mg/Lnew3.331 mg/L (6 values)0.333×

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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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OR0020842 · MCP: https://passage-data.com/mcp