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Rainier, City of

Sewage treatment plant, Rainier, Oregon. NPDES permit OR0020389 expired Jul 31, 2017; 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 (29 values), form Q quarterly (1 value), form B yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 17 reports late

Limits in force (47)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitweekly average≤ 77 deg FMay–Oct
Turbiditymonthly averagereport only (NTU)all year
Turbiditydaily maximumreport only (NTU)all year
Oxygen, dissolved [DO]valuereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/LMay–Oct
BOD, 5-day, 20 deg. Cmonthly average≤ 130 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 83 lb/dMay–Oct
BOD, 5-day, 20 deg. Cdaily maximum≤ 250 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cdaily maximum≤ 170 lb/dMay–Oct
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/LMay–Oct
BOD, 5-day, 20 deg. Cweekly average≤ 190 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 130 lb/dMay–Oct
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
pHdaily minimumreport only (SU)all year
pHdaily maximumreport only (SU)all year
Alkalinity, total [as CaCO3]valuereport only (mg/L)all year
Solids, total suspendedmonthly average≤ 10 mg/LMay–Oct
Solids, total suspendedmonthly average≤ 10 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 83 lb/dMay–Oct
Solids, total suspendedmonthly average≤ 130 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendeddaily maximum≤ 170 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/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedweekly average≤ 15 mg/LMay–Oct
Solids, total suspendedweekly average≤ 190 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedweekly average≤ 130 lb/dMay–Oct
Oil & Greasevaluereport only (mg/L)all year
Nitrogen, ammonia total [as N]valuereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]valuereport only (mg/L)all year
Nitrite + Nitrate total [as N]valuereport only (mg/L)all year
Phosphorus, total [as P]valuereport only (mg/L)all 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
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
Ultraviolet light dosagedaily minimumreport only (mW-sec/cm2)all year
Ultraviolet light dosagemonthly averagereport only (mW-sec/cm2)all year
Solids, total dissolvedvaluereport only (mg/L)all year
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.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OR0020389 · MCP: https://passage-data.com/mcp