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Sewage treatment plant, Selah, Washington. NPDES permit WA0021032 expired Sep 30, 2017; its limits still apply. Last 12 months: over a limit 10 times (last September 2026), 66 required values missing, 11 of 53 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Oxygen, dissolved [DO], minimum | 5.8 | ≥ 7.4 mg/L | 22% |
| November 2025 | Oxygen, dissolved [DO], minimum | 6.4 | ≥ 7.4 mg/L | 14% |
| December 2025 | Oxygen, dissolved [DO], minimum | 6.2 | ≥ 7.4 mg/L | 16% |
| March 2026 | Oxygen, dissolved [DO], minimum | 7.2 | ≥ 7.4 mg/L | 3% |
| April 2026 | Oxygen, dissolved [DO], minimum | 7.2 | ≥ 7.4 mg/L | 3% |
| May 2026 | Oxygen, dissolved [DO], minimum | 6.7 | ≥ 7.4 mg/L | 9% |
| June 2026 | Oxygen, dissolved [DO], minimum | 6.1 | ≥ 7.4 mg/L | 18% |
| July 2026 | Oxygen, dissolved [DO], minimum | 6 | ≥ 7.4 mg/L | 19% |
| August 2026 | Oxygen, dissolved [DO], minimum | 5.7 | ≥ 7.4 mg/L | 23% |
| September 2026 | Oxygen, dissolved [DO], minimum | 5.4 | ≥ 7.4 mg/L | 27% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | average | report only (deg C) (alert, not enforceable) | all year | 001 |
| Temperature, water deg. centigrade | average | report only (deg C) (alert, not enforceable) | all year | 001 |
| Temperature, water deg. centigrade | maximum | report only (deg C) (alert, not enforceable) | all year | 001 |
| Temperature, water deg. centigrade | maximum | report only (deg C) (alert, not enforceable) | all year | 001 |
| Oxygen, dissolved [DO] | average | report only (mg/L) | all year | 001 |
| Oxygen, dissolved [DO] | minimum | ≥ 7.4 mg/L | all year | 001 |
| Oxygen, dissolved [DO] | minimum | ≥ 7.4 mg/L | all year | 001 |
| Oxygen, dissolved [DO] | minimum | ≥ 7.4 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 495 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 495 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 742 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 742 lb/d | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 500 lb/d | all year | 001 |
| Solids, total suspended | monthly average | ≤ 500 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 751 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 751 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | average | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Nitrogen, ammonia total [as N] | maximum | ≤ 2.9 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | maximum | ≤ 2.9 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | average | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | maximum | ≤ 48.4 lb/d | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | single reading | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | single reading | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Nitrite + Nitrate total [as N] | single reading | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Nitrite + Nitrate total [as N] | single reading | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Phosphate, total [as PO4] | single reading | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Phosphate, total [as PO4] | single reading | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Phosphorus, total [as P] | single reading | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Phosphorus, total [as P] | single reading | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Cyanide, total [as CN] | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| Cyanide, total [as CN] | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| Hardness, total [as CaCO3] | single reading | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Hardness, total [as CaCO3] | single reading | report only (mg/L) (alert, not enforceable) | all year | 001 |
| BOD, percent removal [total] | single reading | report only (%) (alert, not enforceable) | all year | 001 |
| BOD, percent removal [total] | single reading | report only (%) (alert, not enforceable) | all year | 001 |
| Oil & grease, non-polar material | single reading | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Oil & grease, non-polar material | single reading | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Solids, total dissolved | single reading | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Solids, total dissolved | single reading | report only (mg/L) (alert, not enforceable) | 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 |
| Solids, suspended percent removal | single reading | report only (%) | all year | 001 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) (alert, not enforceable) | all year | 002 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) (alert, not enforceable) | all year | 002 |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | all year | 002 |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | all year | 002 |
| pH | maximum | report only (SU) (alert, not enforceable) | all year | 002 |
| pH | maximum | report only (SU) (alert, not enforceable) | all year | 002 |
| pH | minimum | report only (SU) (alert, not enforceable) | all year | 002 |
| pH | minimum | report only (SU) (alert, not enforceable) | all year | 002 |
| Solids, total suspended | maximum | report only (mg/L) (alert, not enforceable) | all year | 002 |
| Solids, total suspended | maximum | report only (mg/L) (alert, not enforceable) | all year | 002 |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | all year | 002 |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | all year | 002 |
| BOD, percent removal [total] | average | report only (%) (alert, not enforceable) | all year | 002 |
| BOD, percent removal [total] | average | report only (%) (alert, not enforceable) | all year | 002 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | all year | 002 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | all year | 002 |
| Solids, suspended percent removal | average | report only (%) | all year | 002 |
| BOD, 5-day, 20 deg. C | average | report only (mg/L) (alert, not enforceable) | all year | IN1 |
| BOD, 5-day, 20 deg. C | average | report only (mg/L) (alert, not enforceable) | all year | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) (alert, not enforceable) | all year | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) (alert, not enforceable) | all year | IN1 |
| BOD, 5-day, 20 deg. C | average | report only (lb/d) (alert, not enforceable) | all year | IN1 |
| BOD, 5-day, 20 deg. C | average | report only (lb/d) (alert, not enforceable) | all year | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | all year | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | all year | IN1 |
| pH | maximum | report only (SU) (alert, not enforceable) | all year | IN1 |
| pH | maximum | report only (SU) (alert, not enforceable) | all year | IN1 |
| pH | minimum | report only (SU) (alert, not enforceable) | all year | IN1 |
| pH | minimum | report only (SU) (alert, not enforceable) | all year | IN1 |
| Solids, total suspended | average | report only (mg/L) (alert, not enforceable) | all year | IN1 |
| Solids, total suspended | average | report only (mg/L) (alert, not enforceable) | all year | IN1 |
| Solids, total suspended | maximum | report only (mg/L) (alert, not enforceable) | all year | IN1 |
| Solids, total suspended | maximum | report only (mg/L) (alert, not enforceable) | all year | IN1 |
| Solids, total suspended | average | report only (lb/d) (alert, not enforceable) | all year | IN1 |
| Solids, total suspended | average | report only (lb/d) (alert, not enforceable) | all year | IN1 |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | all year | IN1 |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | all year | IN1 |
| Flow | average | report only (MGD) (alert, not enforceable) | all year | IN1 |
| Flow | average | report only (MGD) (alert, not enforceable) | all year | IN1 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | all year | IN1 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | all year | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) (alert, not enforceable) | all year | IN2 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) (alert, not enforceable) | all year | IN2 |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | all year | IN2 |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | all year | IN2 |
| pH | maximum | report only (SU) (alert, not enforceable) | all year | IN2 |
| pH | maximum | report only (SU) (alert, not enforceable) | all year | IN2 |
| pH | minimum | report only (SU) (alert, not enforceable) | all year | IN2 |
| pH | minimum | report only (SU) (alert, not enforceable) | all year | IN2 |
| Solids, total suspended | maximum | report only (mg/L) (alert, not enforceable) | all year | IN2 |
| Solids, total suspended | maximum | report only (mg/L) (alert, not enforceable) | all year | IN2 |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | all year | IN2 |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | all year | IN2 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | all year | IN2 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | all year | IN2 |
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/WA0021032 · MCP: https://passage-data.com/mcp