DietDetective, Hunter College NYC partner to provide airline water study has announced that, in collaboration with Hunter College NYC Food Policy Center, they have released a 2019 Airline Water Study that reveals the quality of drinking water varies by airline, the company said.

Many airlines have possibly provided passengers with unhealthy water. Unhealthy water violates the federal government´s Aircraft Drinking Water Rule (ADWR), which was implemented in 2011 and requires airlines to provide passengers and flight crew with safe drinking water.

The 2019 Airline Water Study ranks 11 major and 12 regional airlines mainly by the quality of water they provided onboard its flights. Each airline was given a “Water Health Score” (5 = highest rating, 0 = lowest) based on 10 criteria, including fleet size, ADWR violations, positive E. coli and coliform water sample reports and cooperation in providing answers to water-quality questions. A score of 3.0 or better indicates that the airline has relatively safe, clean water.

Alaska Airlines and Allegiant win the top spot with the safest water in the sky, and Hawaiian Airlines finishes No. 2. The airlines with the worst scores are JetBlue and Spirit Airlines, the study shows.