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Water Supply, Hemlock, New York. NPDES permit NY0228478, in force until Nov 30, 2026. Last 12 months: over a limit 2 times (last August 2026), 2 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| June 2026 | Flow, in conduit or thru treatment plant, daily maximum | 2.85 MGD | ≤ 2.45 MGD | 16% |
| August 2026 | Solids, settleable, daily maximum | .3 mL/L | ≤ .1 mL/L | 200% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | daily average | ≤ 20 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 40 mg/L | all year | 001 |
| Solids, settleable | daily maximum | ≤ .1 mL/L | all year | 001 |
| Phosphorus, total [as P] | daily maximum | ≤ .5 mg/L | all year | 001 |
| Flow, in conduit or thru treatment plant | daily average | ≤ 1.95 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 2.45 MGD | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ 250 ug/L | all year | 001 |
| Temperature, water deg. centigrade | daily average | report only (deg C) | all year | 002 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 002 |
| Flow rate | daily average | report only (MGD) | all year | 002 |
| Flow rate | daily maximum | report only (MGD) | all year | 002 |
| Oxygen, dissolved [DO] | minimum | ≥ 7 mg/L | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9.5 SU | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 10 mg/L | all year | 002 |
| Solids, settleable | daily maximum | ≤ .1 mL/L | all year | 002 |
| Nitrogen, ammonia, total [as NH3] | daily average | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia, total [as NH3] | 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 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 5 mg/L | all year | 002 |
Cited limits by parameter: New York's rules and the federal ones.
Same industry: the 53 Water Supply permits in New York.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/NY0228478 · MCP: https://passage-data.com/mcp