Denver International Airport officials confirmed what some hawk-eyed H2O fans had already noticed — the filter status indicators on more than 100 water bottle-filling stations across DIA don’t work. That’s because DIA shut off the indicators about a year ago. The airport’s senior maintenance official said this week that the decision was made because the indicators were throwing off maintenance cycles. The filter indicator light is disabled on a water bottle filling station on Denver International Airport’s Concourse C on May 9, 2024, in Denver.