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Sewage treatment plant, major discharger, Oswego, New York. NPDES permit NY0029114 expired Oct 31, 2019; its limits still apply. Last 12 months: over a limit 3 times (last December 2025). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| October 2025 | 001 | Oxygen, dissolved [DO], daily minimum | 1.7 mg/L | ≥ 2 mg/L | 15% |
| October 2025 | 002 | Chlorine, total residual, daily maximum | 3.98 mg/L | ≤ .05 mg/L | 7860% |
| December 2025 | 002 | Chlorine, total residual, daily maximum | 1.95 mg/L | ≤ .05 mg/L | 3800% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 001 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 2 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | 30-day arithmetic mean | ≤ 30 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | 7-day arithmetic mean | ≤ 45 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | 30-day arithmetic mean | ≤ 1339 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | 7-day arithmetic mean | ≤ 2008 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | 30-day arithmetic mean | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | 7-day arithmetic mean | report only (mg/L) | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| pH | minimum | report only (SU) | all year | 001 |
| pH | maximum | report only (SU) | all year | 001 |
| Solids, total suspended | 30-day arithmetic mean | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | 7-day arithmetic mean | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | 30-day arithmetic mean | ≤ 1339 lb/d | all year | 001 |
| Solids, total suspended | 7-day arithmetic mean | ≤ 2008 lb/d | all year | 001 |
| Solids, total suspended | 30-day arithmetic mean | report only (mg/L) | all year | 001 |
| Solids, total suspended | 7-day arithmetic mean | report only (mg/L) | all year | 001 |
| Solids, settleable | daily maximum | ≤ .3 mL/L | all year | 001 |
| Solids, settleable | daily maximum | report only (mL/L) | all year | 001 |
| Phosphorus, total [as P] | 30-day arithmetic mean | ≤ 1 mg/L | all year | 001 |
| Phosphorus, total [as P] | 30-day arithmetic mean | report only (mg/L) | all year | 001 |
| Cyanide, total [as CN] | daily maximum | ≤ 2.3 lb/d | all year | 001 |
| Nickel, total recoverable | daily maximum | ≤ 31.69 lb/d | all year | 001 |
| Zinc, total [as Zn] | daily maximum | ≤ 4.36 lb/d | all year | 001 |
| Lead, total recoverable | daily maximum | ≤ 3.17 lb/d | all year | 001 |
| Copper, total recoverable | daily maximum | ≤ 5.69 lb/d | all year | 001 |
| Nitrogen, ammonia, total [as NH3] | daily maximum | ≤ 22 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia, total [as NH3] | daily maximum | ≤ 15 mg/L | May–Oct | 001 |
| Nitrogen, ammonia, total [as NH3] | daily maximum | report only (mg/L) | all year | 001 |
| Phenols | daily average | ≤ .4 lb/d | all year | 001 |
| Phenols | monthly average | ≤ .4 lb/d | all year | 001 |
| Flow, in conduit or thru treatment plant | 12-month average | ≤ 5.35 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | 12-month average | ≤ 5.35 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ 2 mg/L | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ .05 mg/L | all year | 001 |
| Mercury, total [as Hg] | daily maximum | ≤ 50 ng/L | all year | 001 |
| Coliform, fecal general | 30-day geometric mean | ≤ 200 #/100mL | all year | 001 |
| Coliform, fecal general | 7-day geometric mean | ≤ 400 #/100mL | all year | 001 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 2 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | 30-day arithmetic mean | report only (mg/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | 30-day arithmetic mean | report only (lb/d) | all year | 002 |
| BOD, 5-day, 20 deg. C | 30-day arithmetic mean | report only (mg/L) | all year | 002 |
| Solids, total suspended | 30-day arithmetic mean | report only (mg/L) | all year | 002 |
| Solids, total suspended | 30-day arithmetic mean | report only (lb/d) | all year | 002 |
| Solids, total suspended | 30-day arithmetic mean | report only (mg/L) | all year | 002 |
| Solids, settleable | daily maximum | ≤ .8 mL/L | all year | 002 |
| Solids, settleable | daily maximum | report only (mL/L) | all year | 002 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 002 |
| Floating solids, waste or visible foam-visual | EPA's "NONSP MX" | report only (N=0;Y=1) | all year | 002 |
| Flow, in conduit or thru treatment plant | 30-day arithmetic mean | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | 30-day arithmetic mean | report only (MGD) | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ .25 mg/L | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ .05 mg/L | all year | 002 |
| Coliform, fecal general | 30-day geometric mean | ≤ 200 #/100mL | all year | 002 |
| Coliform, fecal general | 7-day geometric mean | ≤ 400 #/100mL | all year | 002 |
Cited limits by parameter: New York's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/NY0029114 · MCP: https://passage-data.com/mcp