instead of treating the water in a large storage facility before delivery it deployed an sr 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 managementrelated objectives thus the sr 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