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Sewage treatment plant, major discharger, Portland, Oregon. NPDES permit OR0026905, in force until Aug 31, 2031. Last 12 months: no values over a limit, 1 of 62 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 001 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 001 |
| Temperature, water deg. centigrade | maximum 7-day average | report only (deg C) | all year | 001 |
| Thermal Discharge | monthly average | report only (mkcal/day) | Jun–Sep | 001 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | report only (lb/d) | all year | 001 |
| pH | daily minimum | ≥ 6 SU (alert, not enforceable) | all year | 001 |
| pH | daily maximum | ≤ 9 SU (alert, not enforceable) | all year | 001 |
| pH | monthly minimum | report only (SU) | all year | 001 |
| pH | monthly maximum | report only (SU) | all year | 001 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 001 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 001 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | weekly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | weekly average | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly maximum | report only (mg/L) | May–Oct | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | monthly average | ≤ .19 mg/L | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ .27 mg/L | all year | 001 |
| E. coli | monthly geometric mean | ≤ 126 #/100mL | all year | 001 |
| E. coli | daily maximum | ≤ 406 #/100mL | all year | 001 |
| E. coli | monthly average | ≤ 126 #/100mL | all year | 001 |
| E. coli | daily maximum | report only (#/100mL) | all year | 001 |
| BOD, 5-day, percent removal | monthly average minimum | report only (%) | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | report only (%) | all year | 001 |
| pH range excursions, > 60 minutes | total | ≤ 0 occur/mo | all year | 001 |
| pH range excursions, monthly total accum | total | ≤ 446 min | all year | 001 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 003 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 003 |
| Temperature, water deg. centigrade | maximum 7-day average | report only (deg C) | all year | 003 |
| Thermal Discharge | monthly average | report only (mkcal/day) | Jun–Sep | 003 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 003 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | 003 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | 003 |
| BOD, 5-day, 20 deg. C | weekly average | report only (mg/L) | all year | 003 |
| BOD, 5-day, 20 deg. C | weekly average | report only (lb/d) | all year | 003 |
| pH | daily minimum | ≥ 6 SU (alert, not enforceable) | all year | 003 |
| pH | daily maximum | ≤ 9 SU (alert, not enforceable) | all year | 003 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 003 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 003 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 003 |
| Solids, total suspended | weekly average | report only (mg/L) | all year | 003 |
| Solids, total suspended | weekly average | report only (lb/d) | all year | 003 |
| Nitrogen, ammonia total [as N] | monthly maximum | report only (mg/L) | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Chlorine, total residual | monthly average | ≤ .05 mg/L | all year | 003 |
| Chlorine, total residual | daily maximum | ≤ .27 mg/L | all year | 003 |
| E. coli | monthly geometric mean | ≤ 126 #/100mL | all year | 003 |
| E. coli | daily maximum | ≤ 406 #/100mL | all year | 003 |
| E. coli | monthly geometric mean | ≤ 126 #/100mL | all year | 003 |
| E. coli | daily maximum | report only (#/100mL) | all year | 003 |
| BOD, 5-day, percent removal | monthly average minimum | report only (%) | all year | 003 |
| Solids, suspended percent removal | monthly average minimum | report only (%) | all year | 003 |
| pH range excursions, > 60 minutes | total | ≤ 0 occur/mo | all year | 003 |
| pH range excursions, monthly total accum | total | ≤ 446 min | all year | 003 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | FAC |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 45000 lb/d | all year | FAC |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 312700 lb/d | all year | FAC |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | FAC |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 118800 lb/d | all year | FAC |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | FAC |
| Solids, total suspended | monthly average | ≤ 45000 lb/d | all year | FAC |
| Solids, total suspended | daily maximum | ≤ 312700 lb/d | all year | FAC |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | FAC |
| Solids, total suspended | weekly average | ≤ 118800 lb/d | all year | FAC |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 70 % | Jan, Feb, Mar, Apr, Nov, Dec | FAC |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 85 % | May–Oct | FAC |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | May–Oct | FAC |
| Solids, suspended percent removal | monthly average minimum | ≥ 70 % | Jan, Feb, Mar, Apr, Nov, Dec | FAC |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Thermal Discharge, monthly average | 14100 mkcal/day (Jun–Sep) | new | — | — |
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/OR0026905 · MCP: https://passage-data.com/mcp