WASHINGTON (AP) -- The Bush administration, under fire for scrapping Clinton standards for arsenic in drinking water, announced plans Wednesday to tighten the standards within nine months. Christine Whitman, administrator of the Environmental Protection Agency, said she was asking the National Academy of Sciences to examine the impact of a range of possible reductions. Bush had drawn heavy criticism from environmentalists and others last month when his EPA killed a Clinton administration regulation that would have tightened the standard to no more than 10 parts of arsenic per billion in drinking water. The current standard, set in 1942, is 50 parts per billion. Whitman said she wanted a panel of scientists at the academy to examine a standard in the range of three to 20 parts per billion. RESOURCES How does your water rate? The U.S. Geological Survey has mapped arsenic concentrations in many U.S. counties "The Bush administration is committed to protecting the environment and the health of all Americans," Whitman said in a written statement, promising a final regulation within nine months. She said the decision to seek a report from the academy would "ensure that a standard will be put in place in a timely manner that provides clean, safe and affordable drinking water for the nation and is based on the best science." The Bush administration's decision on March 20 to stop the regulation put into place three days before the end of the Clinton presidency created an uproar among environmentalists, congressional Democrats and members of the public. Whitman argued there was insufficient scientific evidence to justify the $200 million annual cost to municipalities, states and industry of meeting the new Clinton standards by 2006. "I have said consistently that we will obtain the necessary scientific review ... and that we will establish that standard in a timely manner," she said Wednesday. The administration plans to issue a new reg...