Emergency Telephone System Board

Provides 9-1-1 services for all unincorporated Cook County, Illinois and the municipalities of Berkeley, Blue Island, Chicago Heights, Crestwood, Des Plaines, Golf, Harvey, Hometown, Indian Head Park, Lyons, Merrionette Park, Metra, Northlake, Olympia Fields, Palos Park, Park Ridge, Phoenix, Prairie State. Robbins, and Worth Police Department.

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