The MWD board is scheduled to vote April 12 on a rate proposal that would increase the cost of treated water for our region in 2017 by 62 percent and increase the cost of untreated water by 12 percent. The district’s public relation’s spin is that the “average” cost increase for its entire service area is 4 percent — but that number doesn’t apply to the San Diego County Water Authority. MWD’s methodology increases San Diego County’s costs while lowering costs for Los Angeles, without any rational basis for doing so.