The California Cup Club League is an organized group of water polo clubs that will provide each other an opportunity to play in an organized league format that was founded in 2004 by Tom Curran and CHAWP Water Polo.  The league is designed to increase the level of competition by competing against the best programs in California.

The 2009-10 California Cup competition will consist of the top club teams in all age groups, 10 mixed through 18 boys and girls.  A second division will be added at certain levels based on participation in the league.  League play will determine which teams will play in a final California Cup Championships.  The top teams from the south and the top from the north will automatically qualify.  The remaining spots will be decided by committee members.  The final tournament results will be considered for seeding the 2010 United States Club Championships.