Water Warehouse is a family-owned water treatment and refill business based in Elk Grove, California, serving Sacramento County and nearby communities. Locally operated since 1997, it helps homeowners improve water quality with personalized solutions, professional installation, and ongoing system care. Its residential offerings include whole-house water softeners and filtration systems, plus under-sink reverse osmosis units for drinking and cooking water. The team also services existing systems, providing maintenance, filter replacements, repairs, and tune-ups, including for equipment it did not install. Customers can arrange free in-home water testing and consultations to learn about their water and available treatment options.

At its Elk Grove store, Water Warehouse offers hydrogen, alkaline, and reverse osmosis water refills, purified water, bagged ice, and bottles in glass and BPA-free options. The business also carries related products and offers a loyalty program for refill customers. With a focus on practical guidance and personalized service, Water Warehouse serves both customers seeking in-store water products and households looking for water treatment systems.