A tool for obtaining a sample of water from a specified depth in a body of water such as a pool, spa or the like while preventing the inflow of water from the surface and other depths. The tool has an elongated handle having one or more handle sections, an inlet section having a downwardly facing inlet, an outlet section having an outlet for pouring water into a chemical test container and a fluid storage section, defined by a tubular member, disposed between the inlet and outlet sections. Preferably, the handle includes a depth marker to identify the depth at which to obtain the water sample. The upper end of the handle has a pressure control hole for use to prevent the entry of water into the tool until the inlet is at the desired depth in the water. The tool quickly and easily obtains the desired water sample.