ADWR regulates all groundwater wells in Arizona. Well regulations are vital to the proper management and protection of our groundwater. Well construction standards help prevent contamination of the well and the surrounding groundwater. Prior to drilling a new well, or deepening or modifying an existing well, a person must file a Notice of Intent to Drill with the Department. Forms are available on this site and must be submitted to the Department accompanied by the appropriate filing fee. Authority to deepen an existing well or drill a new well will be valid for one year. After that, a new Notice of Intent must be filed. A licensed well drilling contractor must perform the work.