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Courier Services, Except By Air, Willington, Connecticut. NPDES permit CT0029530, in force until Nov 30, 2030. Last 12 months: no values over a limit, 35 of 40 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Flow rate | instantaneous maximum | report only (gal/min) | all year |
| Flow rate | instantaneous maximum | report only (gal/min) | all year |
| Specific conductance | instantaneous maximum | report only (umho/cm) | all year |
| BOD, 5-day, 20 deg. C | instantaneous maximum | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | instantaneous maximum | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | instantaneous maximum | report only (mg/L) | all year |
| Alkalinity, total [as CaCO3] | instantaneous maximum | report only (mg/L) | all year |
| Solids, total suspended | instantaneous maximum | report only (mg/L) | all year |
| Solids, total suspended | instantaneous maximum | report only (mg/L) | all year |
| Solids, total suspended | instantaneous maximum | report only (mg/L) | all year |
| Oil & Grease | instantaneous maximum | ≤ 10 mg/L | all year |
| Oil & Grease | instantaneous maximum | report only (mg/L) | all year |
| Oil & Grease | instantaneous maximum | report only (mg/L) | all year |
| Oil & Grease | instantaneous maximum | report only (mg/L) | all year |
| Nitrogen, total [as N] | instantaneous maximum | report only (mg/L) | all year |
| Nitrogen, total [as N] | instantaneous maximum | report only (mg/L) | all year |
| Nitrogen, total [as N] | instantaneous maximum | report only (mg/L) | all year |
| Nitrogen, nitrate total [as N] | instantaneous maximum | report only (mg/L) | all year |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, nitrate total [as N] | instantaneous maximum | report only (mg/L) | all year |
| Nitrogen, Kjeldahl, total [as N] | instantaneous maximum | report only (mg/L) | all year |
| Nitrogen, Kjeldahl, total [as N] | instantaneous maximum | report only (mg/L) | all year |
| Nitrogen, Kjeldahl, total [as N] | instantaneous maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | instantaneous maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | instantaneous maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | instantaneous maximum | report only (mg/L) | all year |
| Carbon, tot organic [TOC] | instantaneous maximum | report only (mg/L) | all year |
| Carbon, tot organic [TOC] | instantaneous maximum | report only (ug/L) | all year |
| Carbon, tot organic [TOC] | instantaneous maximum | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | instantaneous maximum | report only (mg/L) | all year |
| Chloride [as Cl] | instantaneous maximum | report only (mg/L) | all year |
| Chloride [as Cl] | instantaneous maximum | report only (mg/L) | all year |
| Barium, total [as Ba] | instantaneous maximum | report only (mg/L) | all year |
| Barium, total [as Ba] | instantaneous maximum | report only (mg/L) | all year |
| Barium, total [as Ba] | instantaneous maximum | report only (mg/L) | all year |
| Cadmium, total [as Cd] | instantaneous maximum | report only (mg/L) | all year |
| Cadmium, total [as Cd] | instantaneous maximum | report only (mg/L) | all year |
| Cadmium, total [as Cd] | instantaneous maximum | report only (mg/L) | all year |
| Chromium, total [as Cr] | instantaneous maximum | report only (ug/L) | all year |
| Chromium, total [as Cr] | instantaneous maximum | report only (mg/L) | all year |
| Chromium, total [as Cr] | instantaneous maximum | report only (ug/L) | all year |
| Copper, total [as Cu] | instantaneous maximum | report only (ug/L) | all year |
| Copper, total [as Cu] | instantaneous maximum | report only (ug/L) | all year |
| Copper, total [as Cu] | instantaneous maximum | report only (ug/L) | all year |
| Iron, total [as Fe] | instantaneous maximum | report only (mg/L) | all year |
| Iron, total [as Fe] | instantaneous maximum | report only (mg/L) | all year |
| Iron, total [as Fe] | instantaneous maximum | report only (mg/L) | all year |
| Lead, total [as Pb] | instantaneous maximum | report only (ug/L) | all year |
| Lead, total [as Pb] | instantaneous maximum | report only (ug/L) | all year |
| Lead, total [as Pb] | instantaneous maximum | report only (mg/L) | all year |
| Nickel, total [as Ni] | instantaneous maximum | report only (ug/L) | all year |
| Nickel, total [as Ni] | instantaneous maximum | report only (ug/L) | all year |
| Nickel, total [as Ni] | instantaneous maximum | report only (ug/L) | all year |
| Silver, total [as Ag] | instantaneous maximum | report only (ug/L) | all year |
| Silver, total [as Ag] | instantaneous maximum | report only (ug/L) | all year |
| Silver, total [as Ag] | instantaneous maximum | report only (ug/L) | all year |
| Silver total recoverable | instantaneous maximum | report only (mg/L) | all year |
| Silver total recoverable | instantaneous maximum | report only (mg/L) | all year |
| Zinc, total [as Zn] | instantaneous maximum | report only (ug/L) | all year |
| Zinc, total [as Zn] | instantaneous maximum | report only (ug/L) | all year |
| Zinc, total [as Zn] | instantaneous maximum | report only (ug/L) | all year |
| Vanadium, total recoverable | instantaneous maximum | report only (ug/L) | all year |
| Vanadium, total recoverable | instantaneous maximum | report only (ug/L) | all year |
| Vanadium, total recoverable | instantaneous maximum | report only (ug/L) | all year |
| Polynuclear Aromatic Hydrocarbons [PAHs] | instantaneous maximum | report only (mg/L) | all year |
| Polynuclear Aromatic Hydrocarbons [PAHs] | instantaneous maximum | report only (mg/L) | all year |
| Polynuclear Aromatic Hydrocarbons [PAHs] | instantaneous maximum | report only (mg/L) | all year |
| Toluene | instantaneous maximum | report only (ug/L) | all year |
| Toluene | instantaneous maximum | report only (ug/L) | all year |
| Toluene | instantaneous maximum | report only (ug/L) | all year |
| Toluene | instantaneous maximum | report only (ug/L) | all year |
| Benzene | instantaneous maximum | report only (ug/L) | all year |
| Benzene | instantaneous maximum | report only (ug/L) | all year |
| Benzene | instantaneous maximum | report only (ug/L) | all year |
| Benzene | instantaneous maximum | report only (ug/L) | all year |
| Ethylbenzene | instantaneous maximum | report only (ug/L) | all year |
| Ethylbenzene | instantaneous maximum | report only (ug/L) | all year |
| Ethylbenzene | instantaneous maximum | report only (ug/L) | all year |
| Ethylbenzene | instantaneous maximum | report only (ug/L) | all year |
| Surfactants [MBAS] | instantaneous maximum | report only (mg/L) | all year |
| Surfactants [MBAS] | instantaneous maximum | report only (mg/L) | all year |
| Chlorine, total residual | instantaneous maximum | report only (mg/L) | all year |
| Date of Sample Collection | instantaneous maximum | report only (date) | all year |
| pH, maximum | instantaneous maximum | ≤ 9 SU | all year |
| pH, maximum | instantaneous minimum | report only (SU) | all year |
| pH, maximum | instantaneous maximum | report only (SU) | all year |
| pH, minimum | instantaneous minimum | ≥ 6 SU | all year |
| pH, minimum | instantaneous maximum | report only (SU) | all year |
| pH, minimum | instantaneous maximum | report only (SU) | all year |
| Chemical Oxygen Demand [COD] | instantaneous maximum | report only (mg/L) | all year |
| Chemical Oxygen Demand [COD] | instantaneous maximum | report only (mg/L) | all year |
| Chemical Oxygen Demand [COD] | instantaneous maximum | report only (mg/L) | all year |
| Xylene [mix of m+o+p] | instantaneous maximum | report only (ug/L) | all year |
| Xylene [mix of m+o+p] | instantaneous maximum | report only (ug/L) | all year |
| Xylene [mix of m+o+p] | instantaneous maximum | report only (ug/L) | all year |
| Xylene [mix of m+o+p] | instantaneous maximum | report only (ug/L) | all year |
| LC50 Static 48Hr Acute D. Pulex | minimum | ≥ 90 % | all year |
| LC50 Static 48Hr Acute Pimephales promelas | 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/CT0029530 · MCP: https://passage-data.com/mcp