The Santevia Alkaline Gravity Water System restores your tap water to a clean, great-tasting, mineralized and alkalized state, using the power of gravity alone â€“ no chemicals, artificial materials, water pressure or electricity! Activated alumina is used in most fluoride filtration systems. Due to this, some fluoride filters can leave high levels of aluminum in your filtered water. The Santevia Fluoride Filter gets rid of fluoride without leaving residual aluminum as well as other contaminants while mineralizing and balancing water pH. The result: great tasting, safe, clean water with added minerals like calcium and magnesium as recommended by the World Health Organization. Features: - Lower Tank Capacity: 10 litres - Upper Tank Capacity: 5 litres - Ceramic pre-filter life: 1 year - Fluoride filter life: up to 4 months - Mineral stones filter life: up to 2 years - Dimensions: 23.5" x 12.5"