Why Does My Throat Hurt After Taking A Drink Of

Why does my throat hurt after taking a drink of water. It feels like a scratchy irritant and only happens with water(well, city tap, filtered, distilled, and bottled). It only lasts for a few minutes but immediately returns when I take another sip. I can drink anything else, from alcohol to milk, without this feeling. Is it more that there is something wrong with me physically, or it the fresh water supply tainted with something the filters cannot contain?