Nothing in this title shall authorize the commission to make or enforce any order affecting rates, tolls, rentals, contracts or charges or service rendered, or the safety, adequacy or sufficiency of the facilities, equipment, instrumentalities or buildings, or the reasonableness of rules or regulations made, furnished, used, supplied or in force affecting any street railroad owned and operated by any city or town, but all other provisions enumerated herein shall apply to public utilities owned by any city or town. The commission shall regulate the safety of all hazardous liquid and gas pipelines constructed, owned, or operated by any city or town under chapter 81.88 RCW.