Welcome to WHITEWATER ROCK & SUPPLY CO. Whitewater Rock & Supply Co. has the largest selection of natural building stone and boulders in Southern California. We take pride in offering our customers a wide range of natural stone products including the latest in natural thin veneer, landscape materials, and masonry supplies. We have a wide range of difficult to find landscape rock, building stone and landscape boulders. We carry a complete line of fireplaces, gas log sets, BBQs, fountains and statuary, Mexican tile and brick, etc. We provide our customers with the highest quality product and unmatched customer service at a fair price. Stop by and browse our retail rock yard on a golf cart, have some free coffee and popcorn, and talk to our knowledgeable sales staff.