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Sewage treatment plant, major discharger, Spokane, Washington. NPDES permit WA0093317, in force until Jul 31, 2027. Last 12 months: no values over a limit, 439 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Cyanide, total [as CN] | single reading | report only (ug/L) (alert, not enforceable) | all year | 0000 |
| Total phenols | single reading | report only (ug/L) | all year | 0000 |
| Phenolics, total | single reading | report only (ug/L) (alert, not enforceable) | all year | 0000 |
| pH | single reading | report only (SU) (alert, not enforceable) | all year | 0003 |
| Oil and grease [soxhlet extr.] tot. | single reading | report only (mg/L) (alert, not enforceable) | all year | 0003 |
| Cyanide, total [as CN] | single reading | report only (ug/L) (alert, not enforceable) | all year | 0003 |
| Total phenols | single reading | report only (ug/L) | all year | 0003 |
| Phenolics, total | single reading | report only (ug/L) (alert, not enforceable) | all year | 0003 |
| Solids, total dissolved | single reading | report only (mg/L) (alert, not enforceable) | all year | 0003 |
| Oil and grease [soxhlet extr.] tot. | single reading | report only (mg/L) (alert, not enforceable) | all year | 0004 |
| Cyanide, total [as CN] | single reading | report only (ug/L) (alert, not enforceable) | all year | 0004 |
| Total phenols | single reading | report only (ug/L) | all year | 0004 |
| Phenolics, total | single reading | report only (ug/L) (alert, not enforceable) | all year | 0004 |
| Solids, total dissolved | single reading | report only (mg/L) (alert, not enforceable) | all year | 0004 |
| Nitrogen, total [as N] | maximum | report only (lbs/acre/day) (alert, not enforceable) | all year | 0005 |
| Nitrogen, total [as N] | monthly average | report only (lbs/acre/day) (alert, not enforceable) | all year | 0005 |
| Temperature, water deg. centigrade | maximum | report only (deg C) (alert, not enforceable) | all year | 0006 |
| Temperature, water deg. centigrade | maximum | report only (deg C) (alert, not enforceable) | all year | 001 |
| Oxygen, dissolved [DO] | minimum | report only (mg/L) (alert, not enforceable) | all year | 001 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) (alert, not enforceable) | all year | 001 |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | all year | 001 |
| Alkalinity, total [as CaCO3] | maximum | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Solids, total suspended | monthly average | ≤ 5 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 7.5 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 354 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 532 lb/d | all year | 001 |
| Solids, total suspended | monthly average | ≤ 354 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.83 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.83 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | EPA's "NONSP AV" | ≤ 66.7 lb/d | Apr, May | 001 |
| Nitrogen, ammonia total [as N] | EPA's "NONSP AV" | ≤ 16.7 lb/d | Jun–Sep | 001 |
| Nitrogen, ammonia total [as N] | EPA's "NONSP AV" | ≤ 129.7 lb/d | Mar | 001 |
| Nitrogen, ammonia total [as N] | maximum | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | maximum | report only (lb/d) (alert, not enforceable) | all year | 001 |
| Nitrogen, ammonia total [as N] | EPA's "NONSP AV" | ≤ 66.7 lb/d | Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) (alert, not enforceable) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | maximum | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Nitrite + Nitrate total [as N] | maximum | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Phosphorus, total [as P] | maximum | report only (ug/L) | all year | 001 |
| Phosphorus, total [as P] | maximum | report only (ug/L) (alert, not enforceable) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) (alert, not enforceable) | all year | 001 |
| Phosphorus, total [as P] | maximum | report only (lb/d) | Mar–Oct | 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] | maximum | report only (lb/d) (alert, not enforceable) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | Mar–Oct | 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 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) (alert, not enforceable) | all year | 001 |
| Phosphorus, total [as P] | EPA's "NONSP AV" | ≤ 3.34 lb/d | Mar–Oct | 001 |
| Hardness, total [as CaCO3] | maximum | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Cadmium, total [as Cd] | monthly average | ≤ .057 ug/L | all year | 001 |
| Lead, total [as Pb] | monthly average | ≤ .202 ug/L | all year | 001 |
| Zinc, total [as Zn] | monthly average | ≤ 38.5 ug/L | all year | 001 |
| Polychlorinated biphenyls [PCBs] | maximum | ≤ 414 pg/L | all year | 001 |
| Polychlorinated biphenyls [PCBs] | monthly average | ≤ 170 pg/L | all year | 001 |
| Chlorine, total residual | monthly average | ≤ 16.8 ug/L | all year | 001 |
| E. coli | monthly geometric mean | ≤ 100 #/100mL | all year | 001 |
| E. coli | weekly geometric mean | ≤ 150 #/100mL | all year | 001 |
| E. coli | monthly geometric mean | ≤ 100 #/100mL | all year | 001 |
| pH, maximum | daily maximum | ≤ 8.5 SU | all year | 001 |
| pH, minimum | daily minimum | ≥ 6.5 SU | all year | 001 |
| Mercury, total [as Hg] | maximum | report only (ng/L) (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 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 3 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 3 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 2 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) (alert, not enforceable) | Mar–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 213 lb/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 142 lb/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 213 lb/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 142 lb/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (lb/d) (alert, not enforceable) | Mar–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | EPA's "NONSP AV" | report only (lb/d) (alert, not enforceable) | Mar–Sep | 001 |
| BOD, carbonaceous [5 day, 20 C] | EPA's "NONSP AV" | ≤ 133.4 lb/d | Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (lb/d) (alert, not enforceable) | Mar–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 142 lb/d | Jan, Feb, Nov, Dec | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Carbonaceous oxygen demand, % removal | monthly average minimum | report only (%) (alert, not enforceable) | Mar–Oct | 001 |
| Carbonaceous oxygen demand, % removal | monthly average minimum | ≥ 85 % | Jan, Feb, Nov, Dec | 001 |
| Cyanide, total [as CN] | single reading | report only (ug/L) (alert, not enforceable) | all year | 002 |
| Total phenols | single reading | report only (ug/L) | all year | 002 |
| Phenolics, total | single reading | report only (ug/L) (alert, not enforceable) | all year | 002 |
| pH | single reading | report only (SU) (alert, not enforceable) | all year | 003 |
| Oil and grease [soxhlet extr.] tot. | single reading | report only (mg/L) (alert, not enforceable) | all year | 003 |
| Cyanide, total [as CN] | single reading | report only (ug/L) (alert, not enforceable) | all year | 003 |
| Total phenols | single reading | report only (ug/L) | all year | 003 |
| Phenolics, total | single reading | report only (ug/L) (alert, not enforceable) | all year | 003 |
| Solids, total dissolved | single reading | report only (mg/L) (alert, not enforceable) | all year | 003 |
| Oil and grease [soxhlet extr.] tot. | single reading | report only (mg/L) (alert, not enforceable) | all year | 004 |
| Cyanide, total [as CN] | single reading | report only (ug/L) (alert, not enforceable) | all year | 004 |
| Total phenols | single reading | report only (ug/L) | all year | 004 |
| Phenolics, total | single reading | report only (ug/L) (alert, not enforceable) | all year | 004 |
| Solids, total dissolved | single reading | report only (mg/L) (alert, not enforceable) | all year | 004 |
| Temperature, water deg. centigrade | maximum | report only (deg C) (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 | monthly average | 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 | monthly average | report only (lb/d) (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 | 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 |
| Cadmium, total [as Cd] | single reading | report only (ug/L) (alert, not enforceable) | all year | IN1 |
| Lead, total [as Pb] | single reading | report only (ug/L) (alert, not enforceable) | all year | IN1 |
| Zinc, total [as Zn] | single reading | report only (ug/L) (alert, not enforceable) | all year | IN1 |
| pH, maximum | maximum | report only (SU) (alert, not enforceable) | all year | IN1 |
| pH, minimum | minimum | report only (SU) (alert, not enforceable) | all year | IN1 |
| BOD, carbonaceous [5 day, 20 C] | maximum | report only (mg/L) (alert, not enforceable) | all year | IN1 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) (alert, not enforceable) | all year | IN1 |
| BOD, carbonaceous [5 day, 20 C] | maximum | report only (lb/d) (alert, not enforceable) | all year | IN1 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (lb/d) (alert, not enforceable) | all year | IN1 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | all year | INF1 |
| Flow | monthly average | report only (MGD) (alert, not enforceable) | all year | INF1 |
| Flow | monthly average | report only (MGD) (alert, not enforceable) | all year | INF2 |
| Flow | monthly average | report only (MGD) (alert, not enforceable) | all year | INF3 |
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/WA0093317 · MCP: https://passage-data.com/mcp