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Sewage treatment plant, Oakesdale, Washington. NPDES permit WA0044792 expired Feb 29, 2020; its limits still apply. Last 12 months: over a limit once (last March 2026), 2 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit |
|---|---|---|---|
| March 2026 | pH, daily maximum | 8.8 | ≤ 8.5 SU |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 45 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 45 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 65 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 65 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 60 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 60 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 86.7 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 86.7 lb/d | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 8.5 SU | all year | 001 |
| pH | daily maximum | ≤ 8.5 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 65 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 65 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 60 lb/d | all year | 001 |
| Solids, total suspended | monthly average | ≤ 60 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 86.7 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 86.7 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 001 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 001 |
| Chlorine, total residual | weekly average | ≤ .75 mg/L | all year | 001 |
| Chlorine, total residual | weekly average | ≤ .75 mg/L | all year | 001 |
| BOD, percent removal [total] | monthly average minimum | ≥ 65 % | all year | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 100 #/100mL | all year | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 100 #/100mL | all year | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 200 #/100mL | all year | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 200 #/100mL | all year | 001 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | all year | 001 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | all year | 001 |
| Flow | monthly average | report only (MGD) (alert, not enforceable) | all year | 001 |
| Flow | monthly average | report only (MGD) (alert, not enforceable) | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 65 % | all year | 001 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) (alert, not enforceable) | May–Oct | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) (alert, not enforceable) | May–Oct | IN1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) (alert, not enforceable) | May–Oct | IN1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) (alert, not enforceable) | May–Oct | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | May–Oct | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | May–Oct | IN1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) (alert, not enforceable) | May–Oct | IN1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) (alert, not enforceable) | May–Oct | IN1 |
| pH | maximum | report only (SU) (alert, not enforceable) | May–Oct | IN1 |
| pH | maximum | report only (SU) (alert, not enforceable) | May–Oct | IN1 |
| pH | maximum | report only (SU) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| pH | maximum | report only (SU) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| pH | minimum | report only (SU) (alert, not enforceable) | May–Oct | IN1 |
| pH | minimum | report only (SU) (alert, not enforceable) | May–Oct | IN1 |
| pH | minimum | report only (SU) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| pH | minimum | report only (SU) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| Solids, total suspended | maximum | report only (mg/L) (alert, not enforceable) | May–Oct | IN1 |
| Solids, total suspended | maximum | report only (mg/L) (alert, not enforceable) | May–Oct | IN1 |
| Solids, total suspended | maximum | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| Solids, total suspended | maximum | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| Solids, total suspended | monthly average | report only (mg/L) (alert, not enforceable) | May–Oct | IN1 |
| Solids, total suspended | monthly average | report only (mg/L) (alert, not enforceable) | May–Oct | IN1 |
| Solids, total suspended | monthly average | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| Solids, total suspended | monthly average | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | May–Oct | IN1 |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | May–Oct | IN1 |
| Solids, total suspended | monthly average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| Solids, total suspended | monthly average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| Solids, total suspended | monthly average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| Solids, total suspended | monthly average | report only (lb/d) (alert, not enforceable) | May–Oct | IN1 |
| Solids, total suspended | monthly average | report only (lb/d) (alert, not enforceable) | May–Oct | IN1 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | all year | IN1 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | all year | IN1 |
| Flow | monthly average | report only (MGD) (alert, not enforceable) | all year | IN1 |
| Flow | monthly average | report only (MGD) (alert, not enforceable) | all year | IN1 |
Cited limits by parameter: Washington'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/WA0044792 · MCP: https://passage-data.com/mcp