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Sweet Home, City of

Sewage treatment plant, major discharger, Sweet Home, Oregon. NPDES permit OR0020346 expired Mar 31, 2010; its limits still apply. Last 12 months: over a limit 4 times (last February 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (28 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
December 2025Solids, total suspended, daily maximum1302.7 lb/d≤ 690 lb/d89%
February 2026E. coli, daily maximum2420 #/100mL≤ 406 #/100mL496%
February 2026Solids, total suspended, daily maximum906.5 lb/d≤ 690 lb/d31%
February 2026Solids, total suspended, weekly average800.3 lb/d≤ 520 lb/d54%

Limits in force (44)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
pHdaily minimum≥ 6.3 SUall year
pHdaily maximum≤ 9 SUall year
pHdaily minimumreport only (SU)all year
pHdaily maximumreport only (SU)all year
pHdaily minimum≥ 6.3 SUall year
pHdaily maximum≤ 9 SUall year
pHdaily minimum≥ 5.5 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 10 mg/LMay–Oct
Solids, total suspendedmonthly average≤ 20 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 120 lb/dMay–Oct
Solids, total suspendedmonthly average≤ 350 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendeddaily maximum≤ 240 lb/dMay–Oct
Solids, total suspendeddaily maximum≤ 690 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≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedweekly average≤ 180 lb/dMay–Oct
Solids, total suspendedweekly average≤ 520 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Chlorine, total residualmonthly average≤ .1 mg/Lall year
Chlorine, total residualdaily maximum≤ .1 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
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 120 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 290 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 240 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 630 lb/dJan, Feb, Mar, Apr, Nov, Dec
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≤ 23 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 180 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 460 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous, percent removalmonthly average minimum≥ 85 %May–Oct
BOD, carbonaceous, percent removalmonthly average minimum≥ 70 %Jan, Feb, Mar, Apr, Nov, Dec
Solids, suspended percent removalmonthly average minimum≥ 85 %May–Oct
Solids, suspended percent removalmonthly average minimum≥ 70 %Jan, Feb, Mar, Apr, Nov, Dec
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/OR0020346 · MCP: https://passage-data.com/mcp