"The U.S. Environmental Protection Agency [Tuesday] published a final rule to ensure that safe and reliable drinking water is provided to aircraft passengers and crew. The rule requires airlines to have their water systems inspected at least once every five years, report the test results to the EPA and fix any 'significant deficiencies.'

The Aircraft Drinking Water Rule issued today was prompted by an EPA inspection in 2004 that found all aircraft public water systems were out of compliance with the national primary drinking water regulations. "

Environment News Service had the story October 6, 2009. [2]