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Sewage treatment plant, major discharger, Lake Stevens, Washington. NPDES permit WA0020893 expired Oct 31, 2022; its limits still apply. Last 12 months: no values over a limit, 20 required values missing, 1 of 23 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) | all year | 002 |
| Temperature, water deg. centigrade | maximum | report only (deg C) (alert, not enforceable) | all year | 002 |
| Solids, total suspended | average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 002 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 002 |
| Solids, total suspended | average | ≤ 971 lb/d | Jul–Oct | 002 |
| Solids, total suspended | average | ≤ 971 lb/d | Jul–Oct | 002 |
| Solids, total suspended | average | ≤ 1254 lb/d | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| Solids, total suspended | average | ≤ 1254 lb/d | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| Solids, total suspended | weekly average | ≤ 1456 lb/d | Jul–Oct | 002 |
| Solids, total suspended | weekly average | ≤ 1456 lb/d | Jul–Oct | 002 |
| Solids, total suspended | weekly average | ≤ 1880 lb/d | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| Solids, total suspended | weekly average | ≤ 1880 lb/d | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | average | report only (mg/L) (alert, not enforceable) | Jul–Oct | 002 |
| Nitrogen, ammonia total [as N] | average | report only (mg/L) (alert, not enforceable) | Jul–Oct | 002 |
| Nitrogen, ammonia total [as N] | average | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | average | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) (alert, not enforceable) | Jul–Oct | 002 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) (alert, not enforceable) | Jul–Oct | 002 |
| Nitrogen, Kjeldahl, total [as N] | average | report only (mg/L) (alert, not enforceable) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | average | report only (mg/L) (alert, not enforceable) | all year | 002 |
| Nitrite + Nitrate total [as N] | average | report only (mg/L) (alert, not enforceable) | all year | 002 |
| Nitrite + Nitrate total [as N] | average | report only (mg/L) (alert, not enforceable) | all year | 002 |
| Phosphorus, total [as P] | average | report only (mg/L) (alert, not enforceable) | all year | 002 |
| Phosphorus, total [as P] | average | report only (mg/L) (alert, not enforceable) | all year | 002 |
| Phosphorus, dissolved reactive [drp as P] | average | report only (mg/L) (alert, not enforceable) | all year | 002 |
| Phosphorus, dissolved reactive [drp as P] | average | report only (mg/L) (alert, not enforceable) | all year | 002 |
| Copper, total [as Cu] | average | report only (ug/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| Copper, total [as Cu] | average | report only (ug/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| Copper, total [as Cu] | average | ≤ 12.1 ug/L | Jul–Oct | 002 |
| Copper, total [as Cu] | average | ≤ 12.1 ug/L | Jul–Oct | 002 |
| Copper, total [as Cu] | maximum | report only (ug/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| Copper, total [as Cu] | maximum | report only (ug/L) (alert, not enforceable) | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| Copper, total [as Cu] | maximum | ≤ 24.2 ug/L | Jul–Oct | 002 |
| Copper, total [as Cu] | maximum | ≤ 24.2 ug/L | Jul–Oct | 002 |
| Ultraviolet light intensity | minimum | report only (mW/cm2) (alert, not enforceable) | all year | 002 |
| Ultraviolet light intensity | minimum | report only (mW/cm2) (alert, not enforceable) | all year | 002 |
| Ultraviolet light transmittance | minimum | report only (%) (alert, not enforceable) | all year | 002 |
| Ultraviolet light transmittance | minimum | report only (%) (alert, not enforceable) | all year | 002 |
| pH, maximum | daily maximum | ≤ 9 SU | all year | 002 |
| pH, maximum | daily maximum | ≤ 9 SU | all year | 002 |
| pH, minimum | daily minimum | ≥ 6 SU | all year | 002 |
| pH, minimum | daily minimum | ≥ 6 SU | all year | 002 |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year | 002 |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year | 002 |
| Coliform, fecal general | weekly geometric mean | ≤ 400 #/100mL | all year | 002 |
| Coliform, fecal general | weekly geometric mean | ≤ 400 #/100mL | all year | 002 |
| Flow | average | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| Flow | average | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| Flow | average | report only (MGD) (alert, not enforceable) | Jul–Oct | 002 |
| Flow | average | report only (MGD) (alert, not enforceable) | Jul–Oct | 002 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | Jul–Oct | 002 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | Jul–Oct | 002 |
| BOD, carbonaceous [5 day, 20 C] | average | ≤ 25 mg/L | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | average | ≤ 25 mg/L | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 40 mg/L | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 40 mg/L | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 40 mg/L | Jul–Oct | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 40 mg/L | Jul–Oct | 002 |
| BOD, carbonaceous [5 day, 20 C] | average | report only (lb/d) (alert, not enforceable) | Jul–Oct | 002 |
| BOD, carbonaceous [5 day, 20 C] | average | report only (lb/d) (alert, not enforceable) | Jul–Oct | 002 |
| BOD, carbonaceous [5 day, 20 C] | average | ≤ 1045 lb/d | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | average | ≤ 1045 lb/d | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | average | ≤ 1045 lb/d | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | average | ≤ 1045 lb/d | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | maximum | report only (lb/d) (alert, not enforceable) | Jul–Oct | 002 |
| BOD, carbonaceous [5 day, 20 C] | maximum | report only (lb/d) (alert, not enforceable) | Jul–Oct | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 1671 lb/d | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 1671 lb/d | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 1671 lb/d | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 1671 lb/d | Jan, Feb, Mar, Apr, May, Jun, Nov, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (lb/d) (alert, not enforceable) | Jul–Oct | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (lb/d) (alert, not enforceable) | Jul–Oct | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (lb/d) (alert, not enforceable) | Jul–Oct | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (lb/d) (alert, not enforceable) | Jul–Oct | 002 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 002 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 002 |
| Carbonaceous oxygen demand, % removal | monthly average minimum | ≥ 85 % | all year | 002 |
| Carbonaceous oxygen demand, % removal | monthly average minimum | ≥ 85 % | all year | 002 |
| BOD, 5-day, 20 deg. C | average | report only (mg/L) (alert, not enforceable) | all year | IN2 |
| BOD, 5-day, 20 deg. C | average | 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 (mg/L) (alert, not enforceable) | all year | IN2 |
| BOD, 5-day, 20 deg. C | average | report only (lb/d) (alert, not enforceable) | all year | IN2 |
| BOD, 5-day, 20 deg. C | average | 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 |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | all year | IN2 |
| Solids, total suspended | average | report only (mg/L) (alert, not enforceable) | all year | IN2 |
| Solids, total suspended | average | 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 (mg/L) (alert, not enforceable) | all year | IN2 |
| Solids, total suspended | average | report only (lb/d) (alert, not enforceable) | all year | IN2 |
| Solids, total suspended | average | report only (lb/d) (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 |
| BOD, carbonaceous [5 day, 20 C] | average | report only (mg/L) (alert, not enforceable) | all year | IN2 |
| BOD, carbonaceous [5 day, 20 C] | average | report only (mg/L) (alert, not enforceable) | all year | IN2 |
| BOD, carbonaceous [5 day, 20 C] | maximum | report only (mg/L) (alert, not enforceable) | all year | IN2 |
| BOD, carbonaceous [5 day, 20 C] | maximum | report only (mg/L) (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/WA0020893 · MCP: https://passage-data.com/mcp