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Sewage treatment plant, Liberty, New York. NPDES permit NY0030252 expired Mar 31, 2026; its limits still apply. Last 12 months: over a limit 8 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Phosphorus, total [as P], 30-day arithmetic mean | 1.403 mg/L | ≤ 1 mg/L | 40% |
| December 2025 | Solids, suspended percent removal, monthly average minimum | 84 % | ≥ 85 % | 7% |
| January 2026 | Solids, suspended percent removal, monthly average minimum | 79 % | ≥ 85 % | 40% |
| March 2026 | Solids, suspended percent removal, monthly average minimum | 82 % | ≥ 85 % | 20% |
| July 2026 | Nitrogen, ammonia, total [as NH3], daily maximum | 14.5 mg/L | ≤ 8 mg/L | 81% |
| August 2026 | Coliform, fecal general, 30-day geometric mean | 2420 #/100mL | ≤ 200 #/100mL | 1110% |
| August 2026 | Coliform, fecal general, 7-day geometric mean | 2420 #/100mL | ≤ 400 #/100mL | 505% |
| August 2026 | Nitrogen, ammonia, total [as NH3], daily maximum | 11.1 mg/L | ≤ 8 mg/L | 39% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year |
| Oxygen demand, ultimate | 30-day average | ≤ 113 mg/L | Jun–Oct |
| Oxygen demand, ultimate | 30-day average | ≤ 149 mg/L | Jan, Feb, Mar, Apr, May, Nov, Dec |
| Oxygen demand, ultimate | 30-day average | ≤ 400 lb/d | Jun–Oct |
| Oxygen demand, ultimate | 30-day average | ≤ 527 lb/d | Jan, Feb, Mar, Apr, May, Nov, Dec |
| Oxygen, dissolved [DO] | minimum | ≥ 7 mg/L | all year |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| pH | minimum | report only (SU) | all year |
| pH | maximum | report only (SU) | all year |
| Solids, total suspended | 30-day arithmetic mean | ≤ 30 mg/L | all year |
| Solids, total suspended | 7-day arithmetic mean | ≤ 45 mg/L | all year |
| Solids, total suspended | 30-day arithmetic mean | ≤ 106 lb/d | all year |
| Solids, total suspended | 7-day arithmetic mean | ≤ 160 lb/d | all year |
| Solids, total suspended | 30-day arithmetic mean | report only (mg/L) | all year |
| Solids, settleable | daily maximum | ≤ .1 mL/L | all year |
| Solids, settleable | daily maximum | report only (mL/L) | all year |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | 30-day arithmetic mean | ≤ 1 mg/L | all year |
| Nitrogen, ammonia, total [as NH3] | daily maximum | ≤ 8 mg/L | Jun–Oct |
| Nitrogen, ammonia, total [as NH3] | daily maximum | ≤ 20 mg/L | Jan, Feb, Mar, Apr, May, Nov, Dec |
| Flow, in conduit or thru treatment plant | 30-day arithmetic mean | ≤ .425 MGD | all year |
| Coliform, fecal general | 30-day geometric mean | ≤ 200 #/100mL | May–Oct |
| Coliform, fecal general | 7-day geometric mean | ≤ 400 #/100mL | May–Oct |
| BOD, carbonaceous [5 day, 20 C] | 30-day arithmetic mean | ≤ 25 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | 30-day arithmetic mean | ≤ 89 lb/d | all year |
| BOD, carbonaceous [5 day, 20 C] | 30-day arithmetic mean | report only (mg/L) | all year |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year |
| Carbonaceous oxygen demand, % removal | monthly average minimum | ≥ 85 % | all year |
Cited limits by parameter: New York'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/NY0030252 · MCP: https://passage-data.com/mcp