The founder of bottled-water maker Real Water has publicly apologized after five kids who drank its product came down with liver failure. Real Water president Brent Jones issued the mea culpa amid a Food and Drug Administration probe of the alkaline water, which has been linked to several cases of hepatitis. “We’d like to expressed our deepest sympathy and concern over the events that have led to the inquiry,” Jones said in a roughly two-minute video message released Tuesday. “I want to personally apologize to all of our customers, and I assure you the lessons learned from this will drive further improvement in the brand,” he added. The video came four days after the FDA urged consumers and businesses not to drink, sell or serve Real Water, which has as higher pH level that the Arizona-based company claims can improve hydration. The feds say five infants and children in southern Nevada who consumed the brand’s water came down with non-viral hepatitis that resulted in acute liver failure and put them in the hospital.