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Sewage treatment plant, major discharger, Amherst, New York. NPDES permit NY0025950 expired Oct 31, 2020; its limits still apply. Last 12 months: over a limit 4 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| October 2025 | 002 | Coliform, fecal general, 7-day average | 911.8 #/100mL | ≤ 400 #/100mL | 128% |
| March 2026 | 002 | Solids, settleable, daily maximum | .6 mL/L | ≤ .3 mL/L | 100% |
| April 2026 | 001 | Solids, settleable, daily maximum | .2 mL/L | ≤ .1 mL/L | 100% |
| April 2026 | 002 | Solids, settleable, daily maximum | .4 mL/L | ≤ .3 mL/L | 33% |
| 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 demand, ultimate | monthly average | ≤ 40 mg/L | Jan, Feb, Mar, Apr, May, Nov, Dec | 001 |
| Oxygen demand, ultimate | 7-day average | ≤ 50 mg/L | Jan, Feb, Mar, Apr, May, Nov, Dec | 001 |
| Oxygen demand, ultimate | monthly average | ≤ 16000 lb/d | Jan, Feb, Mar, Apr, May, Nov, Dec | 001 |
| Oxygen demand, ultimate | 7-day average | ≤ 20000 lb/d | Jan, Feb, Mar, Apr, May, Nov, Dec | 001 |
| Oxygen, dissolved [DO] | daily minimum | 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 | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | 7-day average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 12000 lb/d | all year | 001 |
| Solids, total suspended | 7-day average | ≤ 18000 lb/d | all year | 001 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 001 |
| Solids, settleable | daily maximum | ≤ .1 mL/L | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | Jun–Oct | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, May, Nov, Dec | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (lb/d) | Jan, Feb, Mar, Apr, May, Nov, Dec | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (lb/d) | Jun–Oct | 001 |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | all year | 001 |
| Cyanide, total [as CN] | daily maximum | ≤ 18 lb/d (alert, not enforceable) | Jun–Oct | 001 |
| Cyanide, total [as CN] | daily maximum | ≤ 8 lb/d (alert, not enforceable) | Jan, Feb, Mar, Apr, May, Nov, Dec | 001 |
| Zinc, total [as Zn] | daily maximum | ≤ 20 lb/d (alert, not enforceable) | all year | 001 |
| Tetrachloroethylene | daily maximum | ≤ 6.7 lb/d (alert, not enforceable) | Jun–Oct | 001 |
| Tetrachloroethylene | daily maximum | ≤ .81 lb/d (alert, not enforceable) | Jan, Feb, Mar, Apr, May, Nov, Dec | 001 |
| 1,4-Dichlorobenzene | daily maximum | ≤ 2.5 lb/d (alert, not enforceable) | all year | 001 |
| Nitrogen, ammonia, total [as NH3] | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, May, Nov, Dec | 001 |
| Nitrogen, ammonia, total [as NH3] | monthly average | ≤ 3.65 mg/L | Jan, Feb, Mar, Apr, May, Nov, Dec | 001 |
| Nitrogen, ammonia, total [as NH3] | monthly average | report only (mg/L) | Jun–Oct | 001 |
| Nitrogen, ammonia, total [as NH3] | monthly average | ≤ 1460 lb/d | Jan, Feb, Mar, Apr, May, Nov, Dec | 001 |
| Nitrogen, ammonia, total [as NH3] | monthly average | ≤ 1460 lb/d | Jan, Feb, Mar, Apr, May, Nov, Dec | 001 |
| Nitrogen, ammonia, total [as NH3] | monthly average | report only (lb/d) | Jun–Oct | 001 |
| Nitrogen, ammonia, total [as NH3] | monthly average | report only (mg/L) | all year | 001 |
| Endosulfan, total | daily maximum | ≤ .08 lb/d (alert, not enforceable) | all year | 001 |
| Heptachlor | daily maximum | ≤ .02 lb/d (alert, not enforceable) | all year | 001 |
| Phenols | daily maximum | ≤ 3.4 lb/d (alert, not enforceable) | Jun–Oct | 001 |
| Phenols | daily maximum | ≤ 3.2 lb/d (alert, not enforceable) | Jan, Feb, Mar, Apr, May, Nov, Dec | 001 |
| Flow, in conduit or thru treatment plant | monthly average | ≤ 48 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ .4 mg/L | May–Oct | 001 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ .3 tox acute (alert, not enforceable) | all year | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 2 tox chronic (alert, not enforceable) | all year | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ .3 tox acute (alert, not enforceable) | all year | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | maximum | ≤ 2 tox chronic (alert, not enforceable) | all year | 001 |
| Coliform, fecal general | 30-day geometric mean | ≤ 200 #/100mL | May–Oct | 001 |
| Coliform, fecal general | 7-day geometric mean | ≤ 400 #/100mL | May–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, May, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | Jun–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 40 mg/L | Jun–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (lb/d) | Jan, Feb, Mar, Apr, May, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 10000 lb/d | Jun–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 16000 lb/d | Jun–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Carbonaceous oxygen demand, % removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Precipitation, total defined period/in | daily maximum | report only (in) | all year | 002 |
| BOD, 5-day, 20 deg. C | 7-day average | ≤ 45 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | 7-day average | ≤ 45 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 002 |
| Solids, settleable | daily maximum | ≤ .3 mL/L | all year | 002 |
| Flow, wastewater by-passing trtmnt plant | 7-day average | report only (MGD) | all year | 002 |
| Flow, wastewater by-passing trtmnt plant | daily maximum | report only (MGD) | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ 2 mg/L | all year | 002 |
| Coliform, fecal general | 7-day average | ≤ 400 #/100mL | all year | 002 |
| Coliform, fecal general | daily maximum | report only (#/100mL) | all year | 002 |
| Solids, floating - visual determination | monthly total | ≤ 0 d/mo | all year | 002 |
| BOD, 5-day, percent removal | 30-day average | report only (%) | all year | 002 |
| Solids, suspended percent removal | 30-day average | report only (%) | 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/NY0025950 · MCP: https://passage-data.com/mcp