Willcox is ground zero for Arizona’s groundwater crisis. The state’s settlement with Riverview, the company draining the town’s aquifer, requires it to fallow fields and compensate affected well owners.By Wyatt MyskowPEARCE, Ariz.—Nearly two years ago, Arizona Attorney General Kris Mayes held a town hall in this desert community, which is widely regarded as the epicenter of the state’s groundwater crisis.