Product Description Replacement Tank for Aquasana Premium 10 Year, 1,000,000 Gallon Whole House Filter. Only use genuine Aquasana replacements for increased performance capacity and certified contaminant removal. Gives you healthy, clean, great-tasting water from every tap in your home by removing up to 97% of the chlorine in regular tap water and reducing the following harmful water contaminants for 10 years or one million gallons: pesticides herbicides rust silt sediment water soluble metals industrial solvents Get healthier skin and hair by reducing your body's exposure to harsh chlorine and synthetic chemicals that can cause damage and excessive drying. Breathe easy knowing you have improved air quality by removing chlorine from your shower steam. From the Manufacturer The Aquasana EQ-1000R Whole House Filter Replacement tank reduces >97% of the chlorine coming into your home through the municipal water supply. The EQ-1000R's dual-chamber filtration optimizes contaminant reduction: the top tank contains a blend of copper-zinc oxidation media and crushed mineral stone to reduce chlorine and balance the pH; and the bottom tank contains a high-grade activated carbon for final reduction of chlorine and other contaminants. Enjoy great-tasting and odor-free filtered water from every tap or shower in your home. Unlike water softeners, the EQ-1000R does not require salt or back-flushing to operate. The filtration tanks last for ten years or 1,000,000 gallons.