David's Plumbing is a professional plumbing service company based in Raymond, California. It is owned and operated by certified and experienced plumber David Heumann. The company specializes in backflow testing, an essential service for commercial properties to ensure the safety of their water supply. David's Plumbing serves a variety of areas in California, including Los Banos, Madera, Merced, and Fresno. In addition to backflow testing, the company offers a range of other plumbing services. The company operates 24/7 and is renowned for its quality of service, as indicated by its positive Google and Yelp reviews. They hold California contractor licenses C-36 (Plumbing Contractor) and C-34 (Pipeline Contractor).