San Diego County is calling on the powerful Metropolitan Water District to return what local leaders say is $250 million in illegal charges over a number of years. The Board of Supervisors unanimously adopted a resolution Wednesday supporting efforts by the San Diego County Water Authority to recover money the authority says was taken by a combination of overcharging, overspending and excessive borrowing. During a news conference at the county administration building, water authority Chairman Mark Muir was joined by business and civic leaders to demand that the Los Angeles based MWD “stop the spending!”