PoolSupply.com is a family owned and operated Pool Supply business. Starting with Kohler Pool Supply in Encinitas, CA 25 years ago, PoolSupply.com has the experience to best serve your pool and spa needs. PoolSupply.com at our new location in San Marcos, CA, is conveniently located off the 78 freeway at the Las Posas exit. Stop by and see our in store Mini-Pool for equipment testing and demonstrations of the newest energy efficient pool equipment.