High fluoride water causes dental fluorosis, osteoporosis, bone deformation. Lead damages brain tissue, nervous system and other organs of human body, affecting children’s intelligence and physical development, and is a potential carcinogen. Our filter can effectively remove these harmful substances in water and protect you and your family from being affected by unhealthy water.<br><br> TDS stands for total dissolved solids, is composed of inorganic salts and a small amount of organic matter. Our filter cannot obviously lower TDS value because it uses coconut shell activated carbon that can filter harmful substances while keeping beneficial calcium, magnesium, which is the main component of inorganic salts.