Iowa Code § 479.1
It is the purpose of the general assembly in enacting this law to confer upon the utilities board the power and authority to supervise the transportation or transmission of any solid, liquid, or gaseous substance, except water, within or through this state by pipeline, whether specifically mentioned in this chapter or not, and the power and authority to supervise the underground storage of gas, to protect the safety and welfare of the public in its use of public or private highways, grounds, waters, and streams of any kind in this state. However, this chapter does not apply to interstate natural gas or hazardous liquid pipelines, pipeline companies, and underground storage, as these terms are defined in chapters 479A and 479B.
Iowa Code § 479.1
88 Acts, ch 1074, §27; 95 Acts, ch 192, §5