Budget analysts for San Diego say city officials should demand big changes at the cash-strapped County Water Authority, including a thorough re-thinking of its entire operations and urgent action on out-of-state water sales. The recommendations come with the city facing cumulative water rate hikes of 90% over six years, and the water authority predicting it will need to increase the rates it charges the city and other local agencies 100% to 150% by 2035. Those hefty rate hikes could possibly shrink substantially if the water authority limits large capital projects, reduces operating expenses and finds a way to “right size” its water supply, according to the city’s independent budget analyst.