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Estacada, City of

Sewage treatment plant, Estacada, Oregon. NPDES permit OR0020575 expired Sep 30, 2015; its limits still apply. Last 12 months: over a limit 13 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (35 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
10 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 13 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], daily maximum14.1 mg/L≤ 9.2 mg/L53%
October 2025Nitrogen, ammonia total [as N], monthly average12.1 mg/L≤ 3.6 mg/L236%
February 2026BOD, 5-day, 20 deg. C, daily maximum194 lb/d≤ 180 lb/d8%
February 2026BOD, 5-day, 20 deg. C, monthly average99 lb/d≤ 90 lb/d10%
February 2026BOD, 5-day, 20 deg. C, weekly average138 lb/d≤ 135 lb/d2%
February 2026Chlorine, total residual, daily maximum.2 mg/L≤ .19 mg/L5%
March 2026BOD, 5-day, 20 deg. C, monthly average98 lb/d≤ 90 lb/d9%
March 2026BOD, 5-day, 20 deg. C, weekly average135.5 lb/d≤ 135 lb/d0%
May 2026Nitrogen, ammonia total [as N], monthly average3.8 mg/L≤ 3.6 mg/L6%
July 2026Nitrogen, ammonia total [as N], monthly average4 mg/L≤ 3.6 mg/L11%
August 2026Nitrogen, ammonia total [as N], monthly average4.3 mg/L≤ 3.6 mg/L19%
September 2026Nitrogen, ammonia total [as N], daily maximum20.4 mg/L≤ 9.2 mg/L122%
September 2026Nitrogen, ammonia total [as N], monthly average10 mg/L≤ 3.6 mg/L178%

Limits in force (47)

ParameterStatisticLimitMonths
Temperature, water deg. centigrademonthly averagereport only (deg C)May–Oct
Temperature, water deg. centigradedaily maximumreport only (deg C)May–Oct
Temperature, water deg. centigrademonthly averagereport only (deg C)May–Oct
Temperature, water deg. centigradedaily maximumreport only (deg C)May–Oct
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/LMay–Oct
BOD, 5-day, 20 deg. Cmonthly average≤ 20 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 45 lb/dMay–Oct
BOD, 5-day, 20 deg. Cmonthly average≤ 90 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cdaily maximum≤ 90 lb/dMay–Oct
BOD, 5-day, 20 deg. Cdaily maximum≤ 180 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly average≤ 30 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≤ 135 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 68 lb/dMay–Oct
pHdaily minimum≥ 6.1 SUall year
pHdaily maximum≤ 9 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≤ 20 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 45 lb/dMay–Oct
Solids, total suspendedmonthly average≤ 90 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendeddaily maximum≤ 90 lb/dMay–Oct
Solids, total suspendeddaily maximum≤ 180 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≤ 68 lb/dMay–Oct
Solids, total suspendedweekly average≤ 135 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 3.6 mg/LMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 9.2 mg/LMay–Oct
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)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
Chlorine, total residualmonthly average≤ .06 mg/LJan, Feb, Mar, Apr, Nov, Dec
Chlorine, total residualmonthly average≤ .03 mg/LMay–Oct
Chlorine, total residualdaily maximum≤ .19 mg/LJan, Feb, Mar, Apr, Nov, Dec
Chlorine, total residualdaily maximum≤ .1 mg/LMay–Oct
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, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
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/OR0020575 · MCP: https://passage-data.com/mcp