I want to know the answer to the following question:
What aquifer is Tucson starting new wells in?
All the background I'm provided with is that "An allocation from the Central Arizona Project Aqueduct (CAP), which passes more than 300 mi (480 km) across the desert from the Colorado River, has been incorporated into the city's water supply, annually providing over 20 million gallons of "recharged" water which is pumped into the ground to replenish water pumped out.". Is that enough to answer the question?
Answer: no