Abstract: The present invention is directed to an electrostatic sprayer for applying disinfectants, agricultural production, pesticides, and other chemicals and liquid solutions. The electrostatic sprayer may be used for indoor and outdoor applications. The electrostatic sprayer provides a solution tank for holding a treatment solution, a base for holding and protecting the mechanical and electrical components, including a power supply, solution pump, and electrostatic generator, of the electrostatic sprayer, a supply hose, and a spray wand. The solution tank further includes input and exit filters to remove particles that may damage the solution pump of clog the spray wand. The spray wand includes spray nozzles with backflow valves and metering disks to control the flow of the treatment solution and close the valve when the treatment solution is not sufficiently pressurized to pass through the backflow valve to prevent leak when not in use.