PepsiCo is launching a high-tech water cooler for customers who want healthier drinks that are also better for the environment. The new water dispenser lets people fill up their own bottles with flavored or unflavored, still or carbonated water in varying temperatures. Users can also download a companion mobile app that tracks their water intake, reminds them to hydrate, and lets them know how many plastic bottles they spared by using a refillable bottle. It looks like a sleeker version of a digital soda fountain that PepsiCo already makes, called Spire. The cooler comes in two sizes: a large one that resembles a refrigerator that can be used on college campuses and in hotels, stadiums, casinos or other venues; and a smaller, countertop system that PepsiCo anticipates will be used in offices.