Inspectioncurrent
NPMS FIPS 17199 / OPID 32513
AMEREN ILLINOIS COMPANY — Williamson County, IL
Current as of source date Government source
Pipeline and Hazardous Materials Safety AdministrationOfficial agency material
View source Williamson County, ILAMEREN ILLINOIS COMPANY (PHMSA OPID 32513) reported 48.859066 active Natural Gas pipeline miles in Williamson County, IL (county FIPS 17199) in the public NPMS summary snapshot dated 2026-07-16. The snapshot includes active assets only and excludes permanently abandoned assets. Exact pipeline locations and restricted NPMS GIS data are not included.#