(Portland, OR)  --  Health officials say water running through fixtures at Jefferson High School is more likely to contain high levels of lead than at any other Portland public school.  "The Oregonian" cites lab tests that show 60 percent of the school's 330 water sources gave off water with lead at or above the federal limit of 15 parts per billion.  The tests show water samples containing lead at ten to 37 times that level were found in ten drinking fountains at Jefferson High.  The EPA says action must be taken to remove lead from water systems if they're found with levels of 15 parts per billion or higher.