A fluid mixing and delivery system, e.g., for use in chemical injection of irrigation systems or wash-down stations, has a main fluid conduit with an inlet and an outlet, a bypass conduit with an inlet and an outlet, a venturi, a chemical storage tank, and a static mixer. The bypass conduit inlet connects to the main fluid conduit downstream of the main fluid conduit inlet and the bypass section outlet connects to the main fluid conduit upstream of the main fluid conduit outlet. The venturi is located in-line with the bypass conduit between the bypass conduit inlet and the bypass conduit outlet. The chemical storage tank is fluidly connected to an individual supply line, which fluidly connects to the venturi. The static mixer is located in-line with the main fluid conduit between the bypass conduit outlet and the main fluid conduit outlet.