SOUTHWEST GAS CORP — Maricopa County, AZ

Current as of source date Government source

Pipeline and Hazardous Materials Safety AdministrationOfficial agency material

Maricopa County, AZSOUTHWEST GAS CORP (PHMSA OPID 18536) reported 129.974517 active Natural Gas pipeline miles in Maricopa County, AZ (county FIPS 04013) 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.#