Inside Energy: On a muggy day in August, Daryl and Christine Peterson spent hours driving me along gravel roads through farmland damaged by wastewater spills in Bottineau County, North Dakota. Just south of the Canadian border in the central part of the state, Bottineau has been producing oil for decades, but has largely been left out of the state's most recent boom. Now, rusty pumpjacks and tanks rise above a green quilt of soybeans and wheat.
Daryl Peterson stopped the truck in the middle of a field. In front...