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Sewage treatment plant, major discharger, Ludlow, Vermont. NPDES permit VT0100145 expired Dec 31, 2019; its limits still apply. Last 12 months: over a limit once (last December 2025), 58 required values missing, 6 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | E. coli, thermotol, MF, MTEC, instantaneous maximum | 170 | ≤ 65 CFU/100mL | 162% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen demand, ultimate | daily maximum | ≤ 850 lb/d | Jun–Sep |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 50 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 175 lb/d | all year |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 263 lb/d | all year |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 8.5 SU | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 175 lb/d | all year |
| Solids, total suspended | weekly average | ≤ 263 lb/d | all year |
| Solids, settleable | instantaneous maximum | ≤ 1 mL/L | all year |
| Nitrogen, total [as N] | annual average | ≤ 54 lb/d | Dec |
| Phosphorus, total [as P] | monthly average | ≤ 7 lb/d | Oct |
| Phosphorus, total [as P] | monthly average | ≤ 7 lb/d | May |
| Phosphorus, total [as P] | monthly average | ≤ 7 lb/d | Jun–Sep |
| E. coli, thermotol, MF, MTEC | instantaneous maximum | ≤ 65 CFU/100mL | all year |
| Flow, in conduit or thru treatment plant | monthly average | ≤ 1.05 MGD | all year |
| Chlorine, total residual | instantaneous maximum | ≤ .1 mg/L | all year |
| BOD, 5-day, percent removal | monthly minimum | ≥ 85 % | all year |
| Solids, suspended percent removal | monthly minimum | ≥ 85 % | all year |
Cited limits by parameter: Vermont'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/VT0100145 · MCP: https://passage-data.com/mcp