A faucet filter eliminates lead contaminant, chlorine taste and odor, zinc, benzene, particulates, and other heavy metals, and gives pure cold water. The faucet filter cartridge must be replaced every 2 to 3 months to ensure the drinking water quality when passing through the filter. If properly maintained, the faucet-mount filter can last up to 4 years. Although Brita and PUR filter only provides clean water from one tap, the whole house water filter can provide filtered water from all your faucets. It is the perfect solution to avoid unfiltered water from all taps.