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Sewage treatment plant, Medical Lake, Washington. NPDES permit WA0021148 expired Jul 31, 2019; its limits still apply. Last 12 months: over a limit 5 times (last September 2026), 49 required values missing, 11 of 72 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Temperature, water deg. centigrade, maximum | 18.1 | ≤ 17.5 deg C | 3% |
| June 2026 | Temperature, water deg. centigrade, maximum | 19.7 | ≤ 17.5 deg C | 13% |
| July 2026 | Temperature, water deg. centigrade, maximum | 21.7 | ≤ 17.5 deg C | 24% |
| August 2026 | Temperature, water deg. centigrade, maximum | 21.3 | ≤ 17.5 deg C | 22% |
| September 2026 | Temperature, water deg. centigrade, maximum | 19.5 | ≤ 17.5 deg C | 11% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | maximum | ≤ 17.5 deg C | Apr–Nov | 001 |
| Temperature, water deg. centigrade | maximum | ≤ 17.5 deg C | Apr–Nov | 001 |
| Temperature, water deg. centigrade | maximum | report only (deg C) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Temperature, water deg. centigrade | maximum | report only (deg C) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 8 mg/L | all year | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 8 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 23 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 23 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 15 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 15 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 231.4 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 346 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 346 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 231.4 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 231.4 lb/d | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 7.75 SU | all year | 001 |
| pH | daily maximum | ≤ 7.75 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 15 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 15 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 23 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 23 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 231.4 lb/d | all year | 001 |
| Solids, total suspended | monthly average | ≤ 231.4 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 346 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 346 lb/d | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1 mg/L | Apr–Nov | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1 mg/L | Apr–Nov | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2 mg/L | Jan, Feb, Mar, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2 mg/L | Jan, Feb, Mar, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2 mg/L (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Phosphorus, total [as P] | maximum | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Phosphorus, total [as P] | maximum | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (%) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Phosphorus, total [as P] | monthly average | report only (%) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Phosphorus, total [as P] | monthly average minimum | ≥ 85 % | Apr–Nov | 001 |
| Phosphorus, total [as P] | monthly average minimum | ≥ 85 % | Apr–Nov | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Phosphorus, total [as P] | maximum | report only (lb/d) (alert, not enforceable) | all year | 001 |
| Phosphorus, total [as P] | maximum | report only (lb/d) (alert, not enforceable) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) (alert, not enforceable) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) (alert, not enforceable) | all year | 001 |
| BOD, percent removal [total] | monthly average minimum | ≥ 85 % | all year | 001 |
| BOD, percent removal [total] | monthly average minimum | ≥ 85 % | all year | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 100 #/100mL (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 100 #/100mL | Jan, Feb, Mar, Dec | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 100 #/100mL | Jan, Feb, Mar, Dec | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 50 #/100mL | Apr–Nov | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 200 #/100mL (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 200 #/100mL | Jan, Feb, Mar, Dec | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 200 #/100mL | Jan, Feb, Mar, Dec | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 100 #/100mL | Apr–Nov | 001 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | Apr–Nov | 001 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Flow | minimum | ≥ .1 MGD (alert, not enforceable) | Apr–Nov | 001 |
| Flow | minimum | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Flow | minimum | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Flow | minimum | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Flow | minimum | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Flow | monthly average | report only (MGD) (alert, not enforceable) | Apr–Nov | 001 |
| Flow | monthly average | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Flow | monthly average | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Flow | monthly average | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Flow | monthly average | report only (MGD) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Oxygen, dissolved [DO] | minimum | ≥ 8.5 mg/L | all year | 002 |
| Oxygen, dissolved [DO] | minimum | ≥ 8.5 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | maximum | ≤ 3 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | maximum | ≤ 3 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1 mg/L | all year | 002 |
| Oxygen, dissolved [DO] | minimum | ≥ 0 mg/L | all year | 003 |
| Oxygen, dissolved [DO] | minimum | ≥ 0 mg/L | all year | 003 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) (alert, not enforceable) | all year | 003 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) (alert, not enforceable) | all year | 003 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) (alert, not enforceable) | all year | 003 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) (alert, not enforceable) | all year | 003 |
| Turbidity | monthly average | ≤ 2 NTU | all year | 023 |
| Turbidity | monthly average | ≤ 2 NTU | all year | 023 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 10 mg/L | all year | 023 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 10 mg/L | all year | 023 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 15 mg/L | all year | 023 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 15 mg/L | all year | 023 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 231.4 lb/d | all year | 023 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 231.4 lb/d | all year | 023 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 154.3 lb/d | all year | 023 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 154.3 lb/d | all year | 023 |
| pH | daily minimum | ≥ 6 SU | all year | 023 |
| pH | daily minimum | ≥ 6 SU | all year | 023 |
| pH | daily maximum | ≤ 7.75 SU | all year | 023 |
| pH | daily maximum | ≤ 7.75 SU | all year | 023 |
| Solids, total suspended | weekly average | ≤ 15 mg/L | all year | 023 |
| Solids, total suspended | weekly average | ≤ 15 mg/L | all year | 023 |
| Solids, total suspended | monthly average | ≤ 10 mg/L | all year | 023 |
| Solids, total suspended | monthly average | ≤ 10 mg/L | all year | 023 |
| Solids, total suspended | monthly average | ≤ 154.3 lb/d | all year | 023 |
| Solids, total suspended | monthly average | ≤ 154.3 lb/d | all year | 023 |
| Solids, total suspended | weekly average | ≤ 231.4 lb/d | all year | 023 |
| Solids, total suspended | weekly average | ≤ 231.4 lb/d | all year | 023 |
| Nitrogen, total [as N] | monthly average | ≤ 10 mg/L | all year | 023 |
| Nitrogen, total [as N] | monthly average | ≤ 10 mg/L | all year | 023 |
| Phosphorus, total [as P] | monthly average | ≤ .5 mg/L | all year | 023 |
| Phosphorus, total [as P] | monthly average | ≤ .5 mg/L | all year | 023 |
| Phosphorus, dissolved reactive [drp as P] | maximum | report only (mg/L) (alert, not enforceable) | all year | 023 |
| Phosphorus, dissolved reactive [drp as P] | maximum | report only (mg/L) (alert, not enforceable) | all year | 023 |
| Coagulants added [mass] | maximum | report only (lb) (alert, not enforceable) | all year | 023 |
| Coagulants added [mass] | maximum | report only (lb) (alert, not enforceable) | all year | 023 |
| Coagulants added [mass] | monthly average | report only (lb) (alert, not enforceable) | all year | 023 |
| Coagulants added [mass] | monthly average | report only (lb) (alert, not enforceable) | all year | 023 |
| Depth of pond or reservoir in feet | maximum | report only (ft) (alert, not enforceable) | all year | 023 |
| Depth of pond or reservoir in feet | maximum | report only (ft) (alert, not enforceable) | all year | 023 |
| Depth of pond or reservoir in feet | minimum | report only (ft) (alert, not enforceable) | all year | 023 |
| Depth of pond or reservoir in feet | minimum | report only (ft) (alert, not enforceable) | all year | 023 |
| Coliform, total general | 7-day median | ≤ 2.2 #/100mL | all year | 023 |
| Coliform, total general | 7-day median | ≤ 2.2 #/100mL | all year | 023 |
| Coliform, total general | maximum | ≤ 23 #/100mL | all year | 023 |
| Coliform, total general | maximum | ≤ 23 #/100mL | all year | 023 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | all year | 023 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | all year | 023 |
| Flow | monthly average | report only (MGD) (alert, not enforceable) | all year | 023 |
| Flow | monthly average | report only (MGD) (alert, not enforceable) | all year | 023 |
| 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 | 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 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) (alert, not enforceable) | all year | IN1 |
| BOD, 5-day, 20 deg. C | monthly average | 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 | 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 | monthly average | report only (mg/L) (alert, not enforceable) | all year | IN1 |
| Solids, total suspended | monthly average | report only (mg/L) (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 |
| Solids, total suspended | monthly average | report only (lb/d) (alert, not enforceable) | all year | IN1 |
| Solids, total suspended | monthly average | report only (lb/d) (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 |
| Flow | monthly average | report only (MGD) (alert, not enforceable) | all year | IN1 |
| Flow | monthly average | 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 | monthly average | report only (mg/L) (alert, not enforceable) | all year | IN2 |
| BOD, 5-day, 20 deg. C | monthly average | 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 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) (alert, not enforceable) | all year | IN2 |
| BOD, 5-day, 20 deg. C | monthly average | 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 | monthly average | report only (mg/L) (alert, not enforceable) | all year | IN2 |
| Solids, total suspended | monthly average | 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 |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | all year | IN2 |
| Solids, total suspended | monthly average | report only (lb/d) (alert, not enforceable) | all year | IN2 |
| Solids, total suspended | monthly average | report only (lb/d) (alert, not enforceable) | all year | IN2 |
| Solids, total suspended | monthly average | report only (lb/d) (alert, not enforceable) | all year | IN2 |
| Phosphorus, total [as P] | maximum | report only (mg/L) (alert, not enforceable) | all year | IN2 |
| Phosphorus, total [as P] | maximum | report only (mg/L) (alert, not enforceable) | all year | IN2 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) (alert, not enforceable) | all year | IN2 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) (alert, not enforceable) | all year | IN2 |
| Phosphorus, total [as P] | maximum | report only (lb/d) (alert, not enforceable) | all year | IN2 |
| Phosphorus, total [as P] | maximum | report only (lb/d) (alert, not enforceable) | all year | IN2 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) (alert, not enforceable) | all year | IN2 |
| Phosphorus, total [as P] | monthly average | 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 |
| Flow | monthly average | report only (MGD) (alert, not enforceable) | all year | IN2 |
| Flow | monthly average | 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/WA0021148 · MCP: https://passage-data.com/mcp