(AP) — Water use in drought-stricken California plunged by record levels in May, and Gov. Jerry Brown's administration cited that as proof cities can hit steep summer conservation targets they have blasted as unfair. [...] they also credited heightened awareness about the four-year drought after the governor imposed sweeping mandatory conservation measures following April's record low snowpack measurement. Dozens of water departments had criticized the targets as unfair and unrealistic, saying they didn't take into account savings before the drought or ample local supplies. State officials will pay close attention to Southern Californian water use in summer holds to see if savings really reflect shorter showers and dry lawns instead of better weather. District spokeswoman Jessica Parks says customers, many of whom live in large houses with sprawling lawns, now have restrictions on how much water they can use or else they'll pay steep prices.