New polling shows Americans view ensuring a reliable water supply as their top issue, beating out inflation, healthcare reform and others.  The polling comes from the US Water Alliance’s Value of Water Campaign, an effort to raise awareness of the need to support water infrastructure, and is the first time a reliable water supply topped the list of key issues. Reducing water contamination came in third, behind inflation.  Most Americans polled also expect the federal government to make investments to improve and maintain water infrastructure, the polling found, with the majority of participants going as far as supporting bond measures and higher local water bills to do so.