Tucson, AZ
Local City Rankings Article
This burgeoning city in the Sonoran Desert, close to rugged outdoor recreation and blessed with warm weather, continues to draw new residents. But Tucson faces major challenges when it comes to sustainability, the most acute of which is water. Decades of groundwater mining has transformed the Santa Cruz River, which cuts through the city, into a mostly-dry riverbed, except when it rains. But Tucson officials are making progress on the water front: they already require rainwater harvesting on commercial sites and common areas of sub-divisions, and they’re drafting a residential rain water