Central Iowa Water Works says it has become an official entity with the state after filing an agreement with the Iowa secretary of state.Several Central Iowa cities agreed to join the new regional water utility last year with the goal of stronger water production and more affordable water bills. The group includes Des Moines, Clive, Ankeny, Johnston, Norwalk, West Des Moines and more.Central Iowa Water Works says its governing board will meet for the first time next week.Central Iowa Water Works membersAnkenyCliveDes Moines Water WorksGrimesJohnstonNorwalkPolk CityUrbandale Water UtilityWarren Water DistrictWaukeeWest Des Moines Water WorksXenia Rural Water District