As companies continue to position bottled water as a healthier refreshment, the category saw sales rebound across segments leading to an overall category boost of 2.9 percent for more than $7.7 billion in sales, according to SymphonyIRI Group, Chicago, for the 52 weeks ending May 15 in U.S. supermarkets, drug stores, gas and convenience stores and mass merchandise outlets, excluding Wal-Mart.