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Electric And Other Services Combined, Sterling, Connecticut. NPDES permit CT0026972 expired Jan 31, 2017; its limits still apply. Last 12 months: no values over a limit, 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Flow rate | monthly average | ≤ 150000 gal/d | all year |
| Flow rate | monthly average | report only (gal/min) | all year |
| Flow rate | instantaneous maximum | report only (gal/min) | Jan, Apr, Jul, Oct |
| Flow rate | daily maximum | report only (gal/min) | all year |
| pH | instantaneous minimum | ≥ 6 SU | Jan, Apr, Jul, Oct |
| pH | instantaneous minimum | ≥ 6 SU | all year |
| pH | instantaneous maximum | ≤ 9 SU | Jan, Apr, Jul, Oct |
| pH | instantaneous maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | report only (mg/L) | all year |
| Solids, total suspended | instantaneous maximum | ≤ 100 mg/L | Jan, Apr, Jul, Oct |
| Solids, total suspended | daily maximum | ≤ 66.7 mg/L | all year |
| Oil & Grease | instantaneous maximum | ≤ 10 mg/L | Jan, Apr, Jul, Oct |
| Oil & Grease | instantaneous maximum | ≤ 10 mg/L | all year |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | instantaneous maximum | report only (mg/L) | Jan, Apr, Jul, Oct |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, nitrate total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, nitrate total [as N] | instantaneous maximum | report only (mg/L) | Jan, Apr, Jul, Oct |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | instantaneous maximum | report only (mg/L) | Jan, Apr, Jul, Oct |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year |
| Barium, total [as Ba] | monthly average | report only (mg/L) | all year |
| Barium, total [as Ba] | instantaneous maximum | report only (mg/L) | Jan, Jul |
| Barium, total [as Ba] | daily maximum | report only (mg/L) | all year |
| Cadmium, total [as Cd] | monthly average | ≤ .002 mg/L | all year |
| Cadmium, total [as Cd] | instantaneous maximum | ≤ .007 mg/L | Jan, Apr, Jul, Oct |
| Cadmium, total [as Cd] | daily maximum | ≤ .004 mg/L | all year |
| Chromium, total [as Cr] | monthly average | report only (mg/L) | all year |
| Chromium, total [as Cr] | instantaneous maximum | report only (mg/L) | Jan, Apr, Jul, Oct |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year |
| Copper, total [as Cu] | monthly average | ≤ .05 mg/L | all year |
| Copper, total [as Cu] | instantaneous maximum | ≤ .076 mg/L | Jan, Apr, Jul, Oct |
| Copper, total [as Cu] | daily maximum | ≤ .093 mg/L | all year |
| Iron, total [as Fe] | monthly average | report only (mg/L) | all year |
| Iron, total [as Fe] | instantaneous maximum | report only (mg/L) | Jan, Apr, Jul, Oct |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year |
| Lead, total [as Pb] | monthly average | report only (mg/L) | all year |
| Lead, total [as Pb] | instantaneous maximum | ≤ .098 mg/L | Jan, Apr, Jul, Oct |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year |
| Manganese, total [as Mn] | monthly average | report only (mg/L) | all year |
| Manganese, total [as Mn] | instantaneous maximum | report only (mg/L) | Jan, Apr, Jul, Oct |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year |
| Nickel, total [as Ni] | monthly average | report only (mg/L) | all year |
| Nickel, total [as Ni] | instantaneous maximum | report only (mg/L) | Jan, Apr, Jul, Oct |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year |
| Zinc, total [as Zn] | monthly average | ≤ .528 mg/L | all year |
| Zinc, total [as Zn] | instantaneous maximum | ≤ .212 mg/L | Jan, Apr, Jul, Oct |
| Zinc, total [as Zn] | daily maximum | ≤ 1.06 mg/L | all year |
| Aluminum, total [as Al] | monthly average | ≤ .91 mg/L | all year |
| Aluminum, total [as Al] | instantaneous maximum | report only (mg/L) | Jan, Apr, Jul, Oct |
| Aluminum, total [as Al] | daily maximum | ≤ 1.83 mg/L | all year |
| Flow, maximum during 24 hr period | instantaneous maximum | report only (gal/d) | all year |
| Flow, maximum during 24 hr period | daily maximum | ≤ 250000 gal/d | all year |
| pH, maximum | instantaneous maximum | ≤ 9 SU | all year |
| pH, minimum | instantaneous minimum | ≥ 6 SU | all year |
| Flow | instantaneous maximum | report only (gal/d) | Jan, Apr, Jul, Oct |
| Flow | daily maximum | ≤ 250000 gal/d | all year |
| Duration of discharge | daily maximum | report only (hr/d) | Jan, Apr, Jul, Oct |
| Duration of discharge | daily maximum | report only (hr/d) | all year |
| LC50 Static 48Hr Acute D. Pulex | daily minimum | ≥ 100 % | all year |
| LC50 Static 48Hr Acute Pimephales promelas | daily minimum | ≥ 100 % | all year |
| NOAEL Static 48Hr Acute D. pulex | instantaneous minimum | ≥ 90 % | all year |
| NOAEL Static 48Hr Acute Pimephales promelas | instantaneous minimum | ≥ 90 % | all year |
Cited limits by parameter: Connecticut'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/CT0026972 · MCP: https://passage-data.com/mcp