USA Water Polo | 5,319 followers on LinkedIn. USA Water Polo, Inc. is the national governing body for water polo in America, overseeing our United States Olympic program as well as 20 different championship events annually, such as Junior Olympics and Masters Championships. With more than 50,000 members, USAWP is also the sanctioning authority for more than 400 tournaments nationwide. USAWP is committed to the development of the sport nationwide.