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Sewage treatment plant, major discharger, Liberty Lake, Washington. NPDES permit WA0045144, in force until Jul 31, 2027. Last 12 months: over a limit 12 times (last September 2026), 91 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Oxygen, dissolved [DO], monthly average | 8.19355 | ≤ 6.1 mg/L | 34% |
| November 2025 | Oxygen, dissolved [DO], monthly average | 7.40333 | ≤ 6.1 mg/L | 21% |
| December 2025 | Oxygen, dissolved [DO], monthly average | 8.36129 | ≤ 6.1 mg/L | 37% |
| January 2026 | Oxygen, dissolved [DO], monthly average | 7.97419 | ≤ 6.1 mg/L | 31% |
| February 2026 | Oxygen, dissolved [DO], monthly average | 7.20357 | ≤ 6.1 mg/L | 18% |
| March 2026 | Oxygen, dissolved [DO], monthly average | 7.52581 | ≤ 6.1 mg/L | 23% |
| April 2026 | Oxygen, dissolved [DO], monthly average | 7.39667 | ≤ 6.1 mg/L | 21% |
| May 2026 | Oxygen, dissolved [DO], monthly average | 8.53548 | ≤ 6.1 mg/L | 40% |
| June 2026 | Oxygen, dissolved [DO], monthly average | 7.98667 | ≤ 6.1 mg/L | 31% |
| July 2026 | Oxygen, dissolved [DO], monthly average | 7.83548 | ≤ 6.1 mg/L | 28% |
| August 2026 | Oxygen, dissolved [DO], monthly average | 7.77097 | ≤ 6.1 mg/L | 27% |
| September 2026 | Oxygen, dissolved [DO], monthly average | 8.09333 | ≤ 6.1 mg/L | 33% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | maximum | report only (deg C) (alert, not enforceable) | Jun–Oct | 0000 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) (alert, not enforceable) | Jun–Oct | 0000 |
| Temperature, water deg. centigrade | maximum | report only (deg C) (alert, not enforceable) | all year | 0001 |
| Oxygen, dissolved [DO] | minimum | report only (mg/L) (alert, not enforceable) | all year | 0002 |
| Oxygen, dissolved [DO] | monthly average | report only (mg/L) (alert, not enforceable) | all year | 0002 |
| pH | maximum | report only (SU) (alert, not enforceable) | all year | 0002 |
| pH | minimum | report only (SU) (alert, not enforceable) | all year | 0002 |
| Alkalinity, total [as CaCO3] | single reading | report only (mg/L) (alert, not enforceable) | all year | 0002 |
| BOD, 5-day, 20 deg. C | maximum | report only (lbs/acre/day) (alert, not enforceable) | all year | 0003 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lbs/acre/day) (alert, not enforceable) | all year | 0003 |
| Nitrogen, total [as N] | maximum | report only (lbs/acre/day) (alert, not enforceable) | all year | 0003 |
| Nitrogen, total [as N] | monthly average | report only (lbs/acre/day) (alert, not enforceable) | all year | 0003 |
| Temperature, water deg. centigrade | maximum | report only (deg C) (alert, not enforceable) | all year | 0004 |
| Oxygen, dissolved [DO] | monthly average | ≤ 6.1 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 5 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 7 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 83.4 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 116.8 lb/d | all year | 001 |
| Alkalinity, total [as CaCO3] | single reading | 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 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 83.4 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 116.8 lb/d | all year | 001 |
| Solids, total suspended | monthly average | ≤ 83.4 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Nitrogen, ammonia total [as N] | maximum | report only (lb/d) (alert, not enforceable) | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | maximum | report only (lb/d) (alert, not enforceable) | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | maximum | report only (lb/d) (alert, not enforceable) | Oct | 001 |
| Nitrogen, ammonia total [as N] | maximum | report only (lb/d) (alert, not enforceable) | Jun–Sep | 001 |
| Nitrogen, ammonia total [as N] | maximum | report only (lb/d) (alert, not enforceable) | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | EPA's "NONSP AV" | ≤ 11.8 lb/d | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) (alert, not enforceable) | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) (alert, not enforceable) | Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) (alert, not enforceable) | Jun–Sep | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | EPA's "NONSP AV" | ≤ 11.8 lb/d | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | EPA's "NONSP AV" | ≤ 3 lb/d | Jun–Sep | 001 |
| Nitrogen, ammonia total [as N] | EPA's "NONSP AV" | ≤ 11.8 lb/d | Oct | 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) (alert, not enforceable) | 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) (alert, not enforceable) | 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) (alert, not enforceable) | Jan, Feb, Nov, Dec | 001 |
| Phosphorus, total [as P] | maximum | report only (lb/d) (alert, not enforceable) | Mar–Oct | 001 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Nov, Dec | 001 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) (alert, not enforceable) | Mar–Oct | 001 |
| Phosphorus, total [as P] | EPA's "NONSP AV" | ≤ .45 lb/d | Mar–Oct | 001 |
| Phosphorus, dissolved reactive [drp as P] | maximum | 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 |
| Lead, total [as Pb] | monthly average | ≤ 1.6 ug/L | all year | 001 |
| Zinc, total [as Zn] | monthly average | ≤ 83.5 ug/L | all year | 001 |
| Cadmium, total recoverable | maximum | ≤ 1.65 ug/L | all year | 001 |
| Cadmium, total recoverable | monthly average | ≤ .89 ug/L | all year | 001 |
| Polychlorinated biphenyls [PCBs] | maximum | ≤ 341 pg/L | all year | 001 |
| Polychlorinated biphenyls [PCBs] | monthly average | ≤ 170 pg/L | all year | 001 |
| BOD, percent removal [total] | monthly average minimum | ≥ 85 % | all year | 001 |
| pH, maximum | daily maximum | ≤ 8.5 SU | all year | 001 |
| pH, minimum | daily minimum | ≥ 6.8 SU | all year | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 18 #/100mL | all year | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 27 #/100mL | 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] | monthly average | report only (mg/L) (alert, not enforceable) | Mar–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (mg/L) (alert, not enforceable) | Mar–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] | EPA's "NONSP AV" | ≤ 45 lb/d | Mar–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (lb/d) (alert, not enforceable) | Mar–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (lb/d) (alert, not enforceable) | Mar–Oct | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| 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 |
| Polybrominated Diphenyl Ethers | single reading | report only (pg/L) (alert, not enforceable) | all year | IN1 |
| Polychlorinated biphenyls [PCBs] | single reading | report only (pg/L) (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 |
| 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 |
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/WA0045144 · MCP: https://passage-data.com/mcp