Arizona As The New Canvas For Exurban Mega Growth

"And the millions of newcomers pouring in here each year seeking lower-cost homes and living costs may be remaking the rural face of the state for good. After five decades of steady growth - 40 percent over the past decade alone - projections show Arizona will be home to 8.2 million by 2020, the nation's 10th largest.

...Forgoing the contiguous, linear growth from city centers outward - a pattern reflected in many US cities - the Arizona outposts are presenting new challenges for policymakers in how to design infrastructure from highways to sewers and water delivery in a state scorched with six years of record drought."