Highly Fluorinated water may be dangerous to your health. Drinking water with fluoride levels above 2 mg/L can lead to mottling of the teeth. Ongoing levels above 4 mg/L can result in serious health problems. Although the main purpose of this filter is to remove fluoride, Activated Alumina can remove many other contaminants. Reduces/Removes: Fluoride Hydrogen Chloride Hydrogen Sulfide Carbonyl Sulfide Carbon Dioxide Inorganic Arsenic Alcohols Ethers Specifications: Dimensions: 9.75" x 2.75" Design Flow Rate: .1 GPM Weight: 2 lbs Operation Temperature: 40�F to 100�F Filter Media: Activated Alumina Filter Life: 5,000 mg/L