Standard Plumbing Supply on Chula Vista's Main Street is a branch of the regional chain founded in 1952, stocking plumbing, HVAC, and irrigation products across more than 93 locations in nine western states. The showroom carries Kohler fixtures, faucets, and bath accessories alongside commercial-grade copper fittings and PEX piping, and the HVAC inventory overlaps with the ductwork and equipment needs of contractors such as Della-Mora Heating and Air Conditioning. Sprinkler heads, drip-irrigation components, and backflow-prevention assemblies fill the outdoor section, supporting Chula Vista's lawn-irrigation contractors and the city's water-efficiency rebate programs. A True Value hardware affiliation adds key-cutting, hand tools, and paint to the product mix, and the supply counter serves the same contractor base that sources gutter brackets and downspout fittings from Bovey Raingutters. The wholesale counter stocks schedule-40 PVC and cast-iron no-hub soil pipe in diameters up to six inches, along with Watts and Zurn commercial backflow preventers sized for the two-inch and larger service lines common in Chula Vista's multi-family and commercial buildings.