Local water officials have endorsed a plan to fix the system which delivers water to the Santa Clarita Valley from Northern California at a cost to mom-and-pop SCV ratepayer of $20 a month. The project hammered out by state officials these past 10 years to repair the water conveyance system is called the California WaterFix.  It used to be called the Bay Delta Conservation Project. Members of the Castaic Lake Water Agency board unanimously approved a recommendation Wednesday to back the WaterFix project which calls for an extensive overhaul of the water delivery system.