The U.S. Air Force says it won't provide safe drinking water to Oscoda residents affected by chemical pollution from the former Wurtsmith Air Force Base because a Michigan law seeking that is discriminatory.The Air Force Civil Engineering Center coordinating Wurtsmith cleanup says the service branch is "not authorized" to comply with the requirements of Michigan Public Act 545 of 2016, a new state law which took effect in January.Air Force spokesperson Mark Kinkade said the federal Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), which created the Superfund program, only compels the U.S. government to comply with state law if it's not discriminatory.The Air Force claims the Department of Defense prohibits it from spending money to provide safe water unless a private well tests for chemical concentrations above the U.S. Environmental Protection Agency health advisory level.