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Sewage treatment plant, Athena, Oregon. NPDES permit OR0022811 expired Jun 30, 2015; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Turbidity | monthly average | report only (NTU) | May | 001 |
| Turbidity | monthly average | report only (NTU) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Turbidity | monthly average | report only (NTU) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | May | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 78 lb/d | May | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 78 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 156 lb/d | May | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 156 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | May | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 117 lb/d | May | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 117 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| pH | daily minimum | ≥ 6 SU | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| pH | daily minimum | ≥ 6 SU | May | 001 |
| pH | daily maximum | ≤ 9 SU | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| pH | daily maximum | ≤ 9 SU | May | 001 |
| pH | daily minimum | report only (SU) | all year | 001 |
| pH | daily maximum | report only (SU) | all year | 001 |
| pH | daily minimum | report only (SU) | all year | 001 |
| pH | daily maximum | report only (SU) | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | May | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Solids, total suspended | daily maximum | ≤ 80 mg/L | May | 001 |
| Solids, total suspended | daily maximum | ≤ 80 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | May | 001 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | May | 001 |
| Nitrite + Nitrate total [as N] | monthly average | ≤ 11 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrite + Nitrate total [as N] | monthly average | ≤ 11 mg/L | May | 001 |
| Nitrite + Nitrate total [as N] | daily maximum | ≤ 9 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrite + Nitrate total [as N] | daily maximum | ≤ 9 mg/L | May | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | May | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | May | 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 | ≤ .1 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Chlorine, total residual | monthly average | ≤ .1 mg/L | May | 001 |
| E. coli | monthly geometric mean | ≤ 126 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| E. coli | monthly geometric mean | ≤ 126 #/100mL | May | 001 |
| E. coli | daily maximum | ≤ 406 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| E. coli | daily maximum | ≤ 406 #/100mL | May | 001 |
| E. coli | monthly geometric mean | ≤ 126 #/100mL | May | 001 |
| E. coli | monthly geometric mean | ≤ 126 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| E. coli | daily maximum | report only (#/100mL) | May | 001 |
| E. coli | daily maximum | report only (#/100mL) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 65 % | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 65 % | May | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 65 % | May | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 65 % | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Chlorine usage | monthly average | report only (lb/d) | May | 001 |
| Chlorine usage | monthly average | report only (lb/d) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 004 |
| Chlorine, total residual | monthly average | report only (mg/L) | all year | 004 |
| E. coli | monthly geometric mean | ≤ 126 #/100mL | all year | 004 |
| E. coli | daily maximum | ≤ 406 #/100mL | all year | 004 |
| E. coli | monthly geometric mean | ≤ 126 #/100mL | all year | 004 |
| E. coli | daily maximum | report only (#/100mL) | all year | 004 |
| Chlorine usage | monthly average | report only (lb/d) | all year | 004 |
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/OR0022811 · MCP: https://passage-data.com/mcp