Instead of treating the water in a large storage facility before delivery, it deployed an S&R approach that complied with Arizona State regulations. This approach accomplished more than one goal: (i) it avoided the costs of centralised treatment plants; (ii) it stored water underground for future use; (in) it replenished groundwater already pumped; and (iy) it addressed water management-related objectives. Thus, the S&R approach allowed utilising CAP water, first by storing it underground, mostly in large, shallow spreading basins, where it mixes with groundwater in the aquifer, and then by recovering it for distribution.