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Sewage treatment plant, major discharger, Palmer, Alaska. NPDES permit AK0022497, in force until Feb 28, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year |
| Oxygen, dissolved [DO] | daily minimum | ≥ 7 mg/L | all year |
| Oxygen, dissolved [DO] | daily maximum | ≤ 17 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 60 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 375 lb/d | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 751 lb/d | all year |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 563 lb/d | all year |
| pH | instantaneous minimum | ≥ 6.5 SU | all year |
| pH | instantaneous maximum | ≤ 8.5 SU | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 375 lb/d | all year |
| Solids, total suspended | daily maximum | ≤ 751 lb/d | all year |
| Solids, total suspended | monthly average | report only (mg/L) | all year |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year |
| Solids, total suspended | weekly average | ≤ 563 lb/d | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.69 mg/L | all year |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.41 mg/L | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 34 lb/d | all year |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 80 lb/d | all year |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 4.03 mg/L | all year |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 50 lb/d | all year |
| Nickel, total recoverable | daily geometric mean | report only (ug/L) | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Nickel, total recoverable | daily geometric mean | report only (ug/L) | May–Sep |
| Lead, total recoverable | daily maximum | report only (ug/L) | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Lead, total recoverable | daily maximum | report only (ug/L) | May–Sep |
| Copper, total recoverable | daily maximum | report only (ug/L) | May–Sep |
| Copper, total recoverable | daily maximum | report only (ug/L) | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Whole effluent toxicity | daily maximum | ≤ 1 tox chronic | May–Sep |
| Whole effluent toxicity | daily maximum | ≤ 1 tox chronic | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Coliform, fecal MF, MFC broth, 44.5 C | monthly geometric mean | ≤ 20 #/100mL | all year |
| Coliform, fecal MF, MFC broth, 44.5 C | daily maximum | ≤ 40 #/100mL | all year |
| Floating solids, waste or visible foam-visual | daily maximum | report only (N=0;Y=1) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 1.5 MGD | all year |
| E. coli | maximum monthly geometric mean | ≤ 126 CFU/100mL | May–Sep |
| E. coli | daily maximum | ≤ 410 CFU/100mL | May–Sep |
| BOD, 5-day, percent removal | minimum | ≥ 85 % | all year |
| Solids, suspended percent removal | minimum | ≥ 85 % | all year |
Cited limits by parameter: Alaska'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/AK0022497 · MCP: https://passage-data.com/mcp