The Metropolitan Water District of Southern California has a new Residential Rain Barrel Rebate Program! You can now save $75 on purchase and installation of a water tank or barrel for rainwater harvesting. This means more water for your garden without impacting the water supply for the rest of the state. The program is first come first served, so please apply and follow the guidelines. Once the funding is used up, that is it until next round of funding.
Please visit their website for more information:
If you are new to rainwater harvesting or want to learn more, the County of San Diego has some resources to help out: