SEMCO PIPELINE CO — St. Clair County, MI

Current as of source date Government source

Pipeline and Hazardous Materials Safety AdministrationOfficial agency material

St. Clair County, MISEMCO PIPELINE CO (PHMSA OPID 18473) reported 18.5359 active Natural Gas pipeline miles in St. Clair County, MI (county FIPS 26147) 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.#