(AP) — A state lab analyzing lead levels of tap water in Flint is operating seven days per week and can process 1,000 tests each day, officials said. Water samples must be taken with at-home testing kits provided by the state and dropped off at five Flint firehouses that also are operating as water resource sites, state officials said in a release. Actor Michael Keaton told reporters backstage Saturday night at the 22nd annual Screen Actors Guild Awards in Los Angeles that reporters could have gotten ahead of the water crisis. [...] federal officials warned Flint residents Friday that water samples from more than two dozen locations have higher lead levels than can be treated by the filters.