The Interstate Environmental Commission (IEC) is a tri-state water and air pollution control agency serving the Sates of New York, New Jersey and Connecticut (www.iec-nynjct.org). Established in 1936, the IEC is the oldest regulatory and enforcement agency in the region. The Commission's programs and activities reach far beyond its environmental mandates and date back to a time before state and national environment entities were established. The Interstate Environmental Commission's area of jurisdiction---its District--- runs west from New Haven, CT and Port Jefferson, NY on Long Island Sound; west from Fire Island Inlet on the southern shor of Long Island embracing a portion of the Atlantic Ocean; and south from the borders of Rockland and Westchester Counties on the Hudson River to Sandy Hook, NJ.

With a commitment to environment to environmental management from a regional perspective and the support of its nationally accredited environmental laboratory, the Commission, in cooperation with the environmental departments of its member states and numerous other environmental agencies, engages in a variety of programs that include, but are not limited to: research, regulation and enforcement, ambient water quality monitoring, compliance monitoring, CSO elimination, outfall reconnaissance inspections to detect and eliminate illicit discharges and public education and outreach.