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Canyonville, City of

Sewage treatment plant, Canyonville, Oregon. NPDES permit OR0020729 expired Jun 30, 2016; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (39 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (51)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Temperature, water deg. centigradehighest 7-day averagereport only (deg C)May–Oct
Flow ratemonthly medianreport only (cfs)all year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 8.5 SUall year
pHdaily minimumreport only (SU)all year
pHdaily maximumreport only (SU)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≤ 42 lb/dMay–Oct
Solids, total suspendedmonthly average≤ 130 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendeddaily maximum≤ 84 lb/dMay–Oct
Solids, total suspendeddaily maximum≤ 250 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly average≤ 15 mg/LMay–Oct
Solids, total suspendedweekly average≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedweekly average≤ 63 lb/dMay–Oct
Solids, total suspendedweekly average≤ 190 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 5.4 mg/LMay–Oct
Nitrogen, ammonia total [as N]weekly average≤ 11 mg/LMay–Oct
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)May–Oct
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)May–Oct
Phosphorus, total [as P]monthly averagereport only (mg/L)May–Oct
Phosphorus, total [as P]monthly median≤ 1.2 lb/dMay–Oct
Phosphorus, total [as P]monthly averagereport only (mg/L)May–Oct
Phosphorus, total [as P]monthly medianreport only (lb/d)May–Oct
Phosphorus, total [as P]monthly averagereport only (mg/L)May–Oct
Phosphorus, total [as P]monthly median≤ 20 lb/dMay–Oct
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Chlorine, total residualmonthly average≤ .1 mg/LMay–Oct
Chlorine, total residualmonthly average≤ .18 mg/LJan, Feb, Mar, Apr, Nov, Dec
Chlorine, total residualweekly average≤ .1 mg/LMay–Oct
Chlorine, total residualweekly average≤ .48 mg/LJan, Feb, Mar, Apr, Nov, Dec
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 loadhighest 7-day average≤ 8.49 mkcal/dayMay–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≤ 10 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 100 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 42 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 210 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 84 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
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≤ 63 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 160 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

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/OR0020729 · MCP: https://passage-data.com/mcp