Carlos Water Store has been serving Oceanside since 2004. Because this area is known to have droughts throughout the year, Carlos and his crew offer inexpensive filtered water by the gallon or half gallon. The water dispenser is open 24 hours a day. Inside, you'll find much more packed into the cozy space, including snacks, sodas and even some apparel. Carlos Water Store also rents out party supplies, including pinatas, chairs, tables and more for weddings, birthdays and quinceaneras.