Some of the infrastructure of Phoenix is at risk of widespread crumbling that would put roads, buildings, bridges and dams at risk. Researchers have found the city is sinking sufficiently to cause that kind of serious damage through actions such as extensive groundwater pumping. Fulton Schools Professor Edward Kavazanjian, a geotechnical engineer in the School of Sustainable Engineering and the Built Environment, part of the Fulton Schools, points to actions such as cities pumping treated wastewater back into aquifers and parts of the state that have few restrictions on pumping groundwater because they are not in groundwater management districts. Without such guardrails, experts warn the resulting sinking will amount to a slow-moving disaster.