A natural water filter using stones employs various layers of porous materials to purify drinking water. Typically, these layers include coarse stones like gravel to filter out larger particles, followed by finer stones such as sand to capture smaller impurities. Activated charcoal may also be incorporated to adsorb contaminants and improve taste. This layered system allows water to percolate through, effectively removing debris and enhancing water quality using the inherent filtering properties of the natural stones.