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Sewage treatment plant, Leavenworth, Washington. NPDES permit WA0029521 expired Aug 31, 2013; its limits still apply. Last 12 months: no values over a limit, 26 required values missing, 6 of 19 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | maximum | report only (deg C) (alert, not enforceable) | May–Oct | 001 |
| Temperature, water deg. centigrade | maximum | report only (deg C) (alert, not enforceable) | May–Oct | 001 |
| Temperature, water deg. centigrade | maximum | report only (deg C) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Temperature, water deg. centigrade | maximum | report only (deg C) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Turbidity | maximum | report only (NTU) (alert, not enforceable) | May–Oct | 001 |
| Turbidity | maximum | report only (NTU) (alert, not enforceable) | May–Oct | 001 |
| Turbidity | maximum | report only (NTU) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Turbidity | maximum | report only (NTU) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Color [PT-CO units] | maximum | report only (col unit (pc)) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Color [PT-CO units] | maximum | report only (col unit (pc)) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Color [PT-CO units] | maximum | report only (col unit (pc)) (alert, not enforceable) | May–Oct | 001 |
| Color [PT-CO units] | maximum | report only (col unit (pc)) (alert, not enforceable) | May–Oct | 001 |
| Oxygen, dissolved [DO] | average | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Oxygen, dissolved [DO] | average | report only (mg/L) (alert, not enforceable) | May–Oct | 001 |
| Oxygen, dissolved [DO] | average | report only (mg/L) (alert, not enforceable) | May–Oct | 001 |
| Oxygen, dissolved [DO] | minimum | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Oxygen, dissolved [DO] | minimum | report only (mg/L) (alert, not enforceable) | May–Oct | 001 |
| Oxygen, dissolved [DO] | minimum | report only (mg/L) (alert, not enforceable) | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | average | ≤ 10 mg/L | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | average | ≤ 10 mg/L | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 4.7 lb/d | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 4.7 lb/d | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 4.7 lb/d | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 4.7 lb/d | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 7.1 lb/d | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 7.1 lb/d | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 7.1 lb/d | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 7.1 lb/d | May–Oct | 001 |
| pH | maximum | ≤ 8.7 SU | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| pH | maximum | ≤ 8.7 SU | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| pH | maximum | ≤ 8.7 SU | May–Oct | 001 |
| pH | maximum | ≤ 8.7 SU | May–Oct | 001 |
| pH | minimum | ≥ 6.3 SU | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| pH | minimum | ≥ 6.3 SU | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| pH | minimum | ≥ 6.3 SU | May–Oct | 001 |
| pH | minimum | ≥ 6.3 SU | May–Oct | 001 |
| Alkalinity, total [as CaCO3] | average | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Alkalinity, total [as CaCO3] | average | report only (mg/L) (alert, not enforceable) | May–Oct | 001 |
| Alkalinity, total [as CaCO3] | average | report only (mg/L) (alert, not enforceable) | May–Oct | 001 |
| Solids, total suspended | monthly average | ≤ 10 mg/L | May–Oct | 001 |
| Solids, total suspended | maximum | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 10 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Solids, total suspended | weekly average | report only (mg/L) | May–Oct | 001 |
| Solids, total suspended | monthly average | ≤ 10 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 4.7 lb/d | May–Oct | 001 |
| Solids, total suspended | monthly average | ≤ 4.7 lb/d | May–Oct | 001 |
| Solids, total suspended | monthly average | ≤ 4.7 lb/d | May–Oct | 001 |
| Solids, total suspended | monthly average | ≤ 4.7 lb/d | May–Oct | 001 |
| Solids, total suspended | weekly average | ≤ 7.1 lb/d | May–Oct | 001 |
| Solids, total suspended | weekly average | ≤ 7.1 lb/d | May–Oct | 001 |
| Solids, total suspended | weekly average | ≤ 7.1 lb/d | May–Oct | 001 |
| Solids, total suspended | weekly average | ≤ 7.1 lb/d | May–Oct | 001 |
| Oil and grease, hexane extr method | single reading | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Oil and grease, hexane extr method | single reading | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Nitrogen, ammonia total [as N] | average | ≤ 10 mg/L | Jan, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | average | ≤ 10 mg/L | Jan, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3 mg/L | Feb–Apr | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3 mg/L | Feb–Apr | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 4.5 mg/L | Feb–Apr | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 4.5 mg/L | Feb–Apr | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 4.5 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 4.5 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) (alert, not enforceable) | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) (alert, not enforceable) | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly average | report only (lb/d) (alert, not enforceable) | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly average | report only (lb/d) (alert, not enforceable) | May–Oct | 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] | average | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrite + Nitrate total [as N] | average | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrite + Nitrate total [as N] | average | report only (mg/L) (alert, not enforceable) | May–Oct | 001 |
| Nitrite + Nitrate total [as N] | average | report only (mg/L) (alert, not enforceable) | May–Oct | 001 |
| Nitrite + Nitrate total [as N] | maximum | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrite + Nitrate total [as N] | maximum | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrite + Nitrate total [as N] | maximum | report only (mg/L) (alert, not enforceable) | May–Oct | 001 |
| Nitrite + Nitrate total [as N] | maximum | report only (mg/L) (alert, not enforceable) | May–Oct | 001 |
| Nitrite + Nitrate total [as N] | average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrite + Nitrate total [as N] | average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrite + Nitrate total [as N] | average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrite + Nitrate total [as N] | average | report only (lb/d) (alert, not enforceable) | May–Oct | 001 |
| Nitrite + Nitrate total [as N] | average | report only (lb/d) (alert, not enforceable) | May–Oct | 001 |
| Nitrite + Nitrate total [as N] | maximum | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrite + Nitrate total [as N] | maximum | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrite + Nitrate total [as N] | maximum | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrite + Nitrate total [as N] | maximum | report only (lb/d) (alert, not enforceable) | May–Oct | 001 |
| Nitrite + Nitrate total [as N] | maximum | report only (lb/d) (alert, not enforceable) | May–Oct | 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 |
| Chlorine, total residual | average | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Chlorine, total residual | average | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Chlorine, total residual | average | report only (mg/L) (alert, not enforceable) | May–Oct | 001 |
| Chlorine, total residual | average | report only (mg/L) (alert, not enforceable) | May–Oct | 001 |
| Chlorine, total residual | maximum | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Chlorine, total residual | maximum | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Chlorine, total residual | minimum | report only (mg/L) (alert, not enforceable) | May–Oct | 001 |
| Chlorine, total residual | minimum | report only (mg/L) (alert, not enforceable) | May–Oct | 001 |
| BOD, percent removal [total] | monthly average minimum | ≥ 85 % | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, percent removal [total] | monthly average minimum | ≥ 85 % | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, percent removal [total] | monthly average minimum | ≥ 85 % | May–Oct | 001 |
| BOD, percent removal [total] | monthly average minimum | ≥ 85 % | May–Oct | 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 | ≤ 50 #/100mL | May–Oct | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 50 #/100mL | May–Oct | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 50 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 50 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 100 #/100mL | May–Oct | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 100 #/100mL | May–Oct | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 100 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 100 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Flow | average | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Flow | average | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Flow | average | report only (MGD) (alert, not enforceable) | May–Oct | 001 |
| Flow | average | report only (MGD) (alert, not enforceable) | May–Oct | 001 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | May–Oct | 001 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | May–Oct | 001 |
| Chemical oxygen demand [COD] | single reading | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Chemical oxygen demand [COD] | single reading | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | May–Oct | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | May–Oct | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, 5-day, 20 deg. C | average | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| BOD, 5-day, 20 deg. C | average | report only (mg/L) (alert, not enforceable) | May–Oct | IN1 |
| BOD, 5-day, 20 deg. C | average | report only (mg/L) (alert, not enforceable) | May–Oct | 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 |
| Solids, total suspended | average | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, Nov, Dec | IN1 |
| Solids, total suspended | average | report only (mg/L) (alert, not enforceable) | May–Oct | IN1 |
| Solids, total suspended | average | 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) | May–Oct | IN1 |
| Solids, total suspended | maximum | report only (mg/L) (alert, not enforceable) | May–Oct | IN1 |
| Nitrogen, Kjeldahl, total [as N] | single reading | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| BOD, carbonaceous [5 day, 20 C] | single reading | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| Chemical oxygen demand [COD] | single reading | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| Chemical oxygen demand [COD] | single reading | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
Cited limits by parameter: Washington's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/WA0029521 · MCP: https://passage-data.com/mcp