The Radiological Filter is tested to remove up to 99.99% of the following zones of contamination: Aesthetic contaminants: unpleasant taste, odors, cloudiness, silt and chlorine Chemical contaminants: VOC’s, toxic chemicals, trihalomethanes, PFOA, PFOS, PCB’s, DDT, glyphosate, Herbicides, detergents, pesticides, benzene, atrazine and many more Inorganic contaminants: heavy metals, aluminum, asbestos, cadmium, chromium 6, copper, arsenic, nitrates & nitrites, lead, mercury and up to 90% fluoride Radiological contaminants: radon 222, gross beta, alpha radium 226, cesium 137 & 134 and uranium It is designed to be used with chlorinated municipal water. Not to be used with salt water.