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The Upper Santa Cruz Valley has several major water users, all pumping water out of the same aquifer. Most area water users are for-profit companies. ASARCO-Mission Mine, Freeport-McMoRan Sierrita Mine and Farmers Investment Co. (farming) are industrial scale water users. Residential water is provided by Farmers Water Company, Sahuarita Water Company, Las Quintas Serenas Water Company, Quail Creek Water Company, Community Water Company of Green Valley (a nonprofit member owned cooperative), and the Green Valley Water District (a governmental water utility). The proliferation of water companies can be partially explained by the fact that, under Arizona water law, the water in the aquifer is ownerless, thus any amount of water can be pumped out, with costs limited only to drilling, pumping, distribution, etc.[5] Since 2007 the Upper Santa Cruz Providers and Users Group (USCPUG) has been working to bring all local water entities, including the Town of Sahuarita, to the same table. Most of the water users and utilities are now members of USCPUG. The organization has published an analysis and projection of area water use through 2030. It has joined with the U S Bureau of Reclamation to lay the groundwork for transportation and use of water from the Central Arizona Project canal to greatly reduce reliance on pumping groundwater. If a system is successfully completed, the excess pumping will be largely or fully eliminated. The process through design and construction is expected to take several years with funding being the major challenge.