The questions of a 13 year old science prodigy helped launch an investigation into the safety of airplane tap water. With his small thermal cooler packed with petri dishes, filters, agar, vials and a syringe, Zach took samples of water from the airplane's galleys and lavatory taps. He tested the waters on nine different flights and found seven were contaminated with E.coli, fecal coliform or salmonella. In one, he even found insect eggs.