NPDES permit CT0021873 · Major NON-POTW · effective, expires 2029-12-31 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-07-31.
Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | Flow rate | MO AVG | <= 192000 gal/d | all year |
| 001 | Flow rate | MO AVG | <= 192000 gal/d | all year |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | report only | Feb, May, Aug, Nov |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | report only | Feb, May, Aug, Nov |
| 001 | Solids, total suspended | MO AVG | <= 19.727 mg/L | all year |
| 001 | Solids, total suspended | MO AVG | <= 19.727 mg/L | all year |
| 001 | Solids, total suspended | DAILY MX | <= 29.59 mg/L | all year |
| 001 | Solids, total suspended | DAILY MX | <= 29.59 mg/L | all year |
| 001 | Oil & Grease | MO AVG | <= 9.86 mg/L | all year |
| 001 | Oil & Grease | MO AVG | <= 9.86 mg/L | all year |
| 001 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 001 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 001 | Nitrogen, total [as N] | DAILY MX | report only | Feb, May, Aug, Nov |
| 001 | Nitrogen, total [as N] | DAILY MX | report only | Feb, May, Aug, Nov |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | report only | Feb, May, Aug, Nov |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | report only | Feb, May, Aug, Nov |
| 001 | Nitrogen, nitrite total [as N] | DAILY MX | report only | Feb, May, Aug, Nov |
| 001 | Nitrogen, nitrite total [as N] | DAILY MX | report only | Feb, May, Aug, Nov |
| 001 | Nitrogen, nitrate total [as N] | DAILY MX | report only | Feb, May, Aug, Nov |
| 001 | Nitrogen, nitrate total [as N] | DAILY MX | report only | Feb, May, Aug, Nov |
| 001 | Nitrogen, Kjeldahl, total [as N] | MO AVG | report only | all year |
| 001 | Nitrogen, Kjeldahl, total [as N] | MO AVG | report only | all year |
| 001 | Nitrogen, Kjeldahl, total [as N] | DAILY MX | report only | all year |
| 001 | Nitrogen, Kjeldahl, total [as N] | DAILY MX | report only | all year |
| 001 | Cyanide, total [as CN] | MO AVG | <= .641 mg/L | Oct |
| 001 | Cyanide, total [as CN] | MO AVG | <= .641 mg/L | Oct |
| 001 | Cyanide, total [as CN] | DAILY MX | <= 1.184 mg/L | Oct |
| 001 | Cyanide, total [as CN] | DAILY MX | <= 1.184 mg/L | Oct |
| 001 | Fluoride, total [as F] | MO AVG | <= 20 mg/L | Feb, May, Aug, Nov |
| 001 | Fluoride, total [as F] | MO AVG | <= 20 mg/L | Feb, May, Aug, Nov |
| 001 | Fluoride, total [as F] | DAILY MX | <= 30 mg/L | Feb, May, Aug, Nov |
| 001 | Fluoride, total [as F] | DAILY MX | <= 30 mg/L | Feb, May, Aug, Nov |
| 001 | Cadmium, total [as Cd] | MO AVG | <= .099 mg/L | Feb, May, Aug, Nov |
| 001 | Cadmium, total [as Cd] | MO AVG | <= .099 mg/L | Feb, May, Aug, Nov |
| 001 | Cadmium, total [as Cd] | DAILY MX | <= .493 mg/L | Feb, May, Aug, Nov |
| 001 | Cadmium, total [as Cd] | DAILY MX | <= .493 mg/L | Feb, May, Aug, Nov |
| 001 | Cadmium, total [as Cd] | MO AVG | <= .0208 kg/d | Feb, May, Aug, Nov |
| 001 | Cadmium, total [as Cd] | MO AVG | <= .0208 kg/d | Feb, May, Aug, Nov |
| 001 | Cadmium, total [as Cd] | DAILY MX | <= .0418 kg/d | Feb, May, Aug, Nov |
| 001 | Cadmium, total [as Cd] | DAILY MX | <= .0418 kg/d | Feb, May, Aug, Nov |
| 001 | Chromium, hexavalent [as Cr] | MO AVG | <= .099 mg/L | all year |
| 001 | Chromium, hexavalent [as Cr] | MO AVG | <= .099 mg/L | all year |
| 001 | Chromium, hexavalent [as Cr] | DAILY MX | <= .197 mg/L | all year |
| 001 | Chromium, hexavalent [as Cr] | DAILY MX | <= .197 mg/L | all year |
| 001 | Chromium, total [as Cr] | MO AVG | <= .67 mg/L | all year |
| 001 | Chromium, total [as Cr] | MO AVG | <= .67 mg/L | all year |
| 001 | Chromium, total [as Cr] | DAILY MX | <= 1.89 mg/L | all year |
| 001 | Chromium, total [as Cr] | DAILY MX | <= 1.89 mg/L | all year |
| 001 | Copper, total [as Cu] | MO AVG | <= .254 mg/L | all year |
| 001 | Copper, total [as Cu] | MO AVG | <= .254 mg/L | all year |
| 001 | Copper, total [as Cu] | DAILY MX | <= .637 mg/L | all year |
| 001 | Copper, total [as Cu] | DAILY MX | <= .637 mg/L | all year |
| 001 | Copper, total [as Cu] | MO AVG | <= .184 kg/d | all year |
| 001 | Copper, total [as Cu] | MO AVG | <= .184 kg/d | all year |
| 001 | Copper, total [as Cu] | DAILY MX | <= .463 kg/d | all year |
| 001 | Copper, total [as Cu] | DAILY MX | <= .463 kg/d | all year |
| 001 | Iron, total [as Fe] | MO AVG | <= 2.96 mg/L | all year |
| 001 | Iron, total [as Fe] | MO AVG | <= 2.96 mg/L | all year |
| 001 | Iron, total [as Fe] | DAILY MX | <= 4.93 mg/L | all year |
| 001 | Iron, total [as Fe] | DAILY MX | <= 4.93 mg/L | all year |
| 001 | Lead, total [as Pb] | MO AVG | <= .019 mg/L | all year |
| 001 | Lead, total [as Pb] | MO AVG | <= .019 mg/L | all year |
| 001 | Lead, total [as Pb] | DAILY MX | <= .06 mg/L | all year |
| 001 | Lead, total [as Pb] | DAILY MX | <= .06 mg/L | all year |
| 001 | Lead, total [as Pb] | MO AVG | <= .014 kg/d | all year |
| 001 | Lead, total [as Pb] | MO AVG | <= .014 kg/d | all year |
| 001 | Lead, total [as Pb] | DAILY MX | <= .0408 kg/d | all year |
| 001 | Lead, total [as Pb] | DAILY MX | <= .0408 kg/d | all year |
| 001 | Nickel, total [as Ni] | MO AVG | <= .97 mg/L | all year |
| 001 | Nickel, total [as Ni] | MO AVG | <= .97 mg/L | all year |
| 001 | Nickel, total [as Ni] | DAILY MX | <= 1.92 mg/L | all year |
| 001 | Nickel, total [as Ni] | DAILY MX | <= 1.92 mg/L | all year |
| 001 | Nickel, total [as Ni] | MO AVG | <= .489 kg/d | all year |
| 001 | Nickel, total [as Ni] | MO AVG | <= .489 kg/d | all year |
| 001 | Nickel, total [as Ni] | DAILY MX | <= .982 kg/d | all year |
| 001 | Nickel, total [as Ni] | DAILY MX | <= .982 kg/d | all year |
| 001 | Silver, total [as Ag] | MO AVG | <= .099 mg/L | all year |
| 001 | Silver, total [as Ag] | MO AVG | <= .099 mg/L | all year |
| 001 | Silver, total [as Ag] | DAILY MX | <= .424 mg/L | all year |
| 001 | Silver, total [as Ag] | DAILY MX | <= .424 mg/L | all year |
| 001 | Silver, total [as Ag] | MO AVG | <= .0105 kg/d | all year |
| 001 | Silver, total [as Ag] | MO AVG | <= .0105 kg/d | all year |
| 001 | Silver, total [as Ag] | DAILY MX | <= .0244 kg/d | all year |
| 001 | Silver, total [as Ag] | DAILY MX | <= .0244 kg/d | all year |
| 001 | Zinc, total [as Zn] | MO AVG | <= .45 mg/L | all year |
| 001 | Zinc, total [as Zn] | MO AVG | <= .45 mg/L | all year |
| 001 | Zinc, total [as Zn] | DAILY MX | <= 1.4 mg/L | all year |
| 001 | Zinc, total [as Zn] | DAILY MX | <= 1.4 mg/L | all year |
| 001 | Zinc, total [as Zn] | MO AVG | <= .328 kg/d | all year |
| 001 | Zinc, total [as Zn] | MO AVG | <= .328 kg/d | all year |
| 001 | Zinc, total [as Zn] | DAILY MX | <= 1.018 kg/d | all year |
| 001 | Zinc, total [as Zn] | DAILY MX | <= 1.018 kg/d | all year |
| 001 | Aluminum, total [as Al] | MO AVG | <= 1.973 mg/L | Feb, May, Aug, Nov |
| 001 | Aluminum, total [as Al] | MO AVG | <= 1.973 mg/L | Feb, May, Aug, Nov |
| 001 | Aluminum, total [as Al] | DAILY MX | <= 3.946 mg/L | Feb, May, Aug, Nov |
| 001 | Aluminum, total [as Al] | DAILY MX | <= 3.946 mg/L | Feb, May, Aug, Nov |
| 001 | Chloroform | INST MAX | report only | Feb, May, Aug, Nov |
| 001 | Chloroform | INST MAX | report only | Feb, May, Aug, Nov |
| 001 | Methylene chloride | INST MAX | report only | Feb, May, Aug, Nov |
| 001 | Methylene chloride | INST MAX | report only | Feb, May, Aug, Nov |
| 001 | Surfactants [MBAS] | INST MAX | report only | Feb, May, Aug, Nov |
| 001 | Surfactants [MBAS] | INST MAX | report only | Feb, May, Aug, Nov |
| 001 | Flow, maximum during 24 hr period | DAILY MX | <= 288000 gal/d | all year |
| 001 | Flow, maximum during 24 hr period | DAILY MX | <= 288000 gal/d | all year |
| 001 | Chlorine, total residual | MO AVG | <= .189 mg/L | all year |
| 001 | Chlorine, total residual | MO AVG | <= .189 mg/L | all year |
| 001 | Chlorine, total residual | DAILY MX | <= .407 mg/L | all year |
| 001 | Chlorine, total residual | DAILY MX | <= .407 mg/L | all year |
| 001 | pH, maximum | INST MAX | <= 8.5 SU | all year |
| 001 | pH, maximum | INST MAX | <= 8.5 SU | all year |
| 001 | pH, minimum | INST MIN | >= 6.8 SU | all year |
| 001 | pH, minimum | INST MIN | >= 6.8 SU | all year |
| 001 | Solids, total dissolved | DAILY MX | report only | Feb, May, Aug, Nov |
| 001 | Solids, total dissolved | DAILY MX | report only | Feb, May, Aug, Nov |
| 001 | Organics, total toxic [TTO] | INST MAX | <= .06 mg/L | all year |
| 001 | Organics, total toxic [TTO] | INST MAX | <= .06 mg/L | all year |
| 001 | LC50 Static 48Hr Acute D. Pulex | MINIMUM | >= 70 % | all year |
| 001 | LC50 Static 48Hr Acute D. Pulex | MINIMUM | >= 70 % | all year |
| 001 | LC50 Static 48Hr Acute Pimephales promelas | INST MIN | >= 70 % | all year |
| 001 | LC50 Static 48Hr Acute Pimephales promelas | INST MIN | >= 70 % | all year |
| 001 | NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | MINIMUM | report only | all year |
| 001 | NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | MINIMUM | report only | all year |
| 001 | NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | MINIMUM | report only | all year |
| 001 | NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | MINIMUM | report only | all year |
| 001 | NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | MINIMUM | report only | all year |
| 001 | NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | MINIMUM | report only | all year |
| 001 | NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | MINIMUM | report only | all year |
| 001 | NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | MINIMUM | report only | all year |
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