Water filtration is the process of removing impurities, contaminants, and unwanted particles from water to make it cleaner and safer for consumption. Filtration systems can remove sediments, chlorine, bacteria, heavy metals, and other harmful substances, improving both the taste and quality of water.

Water filtration works by passing water through one or more layers of filtering materials, such as activated carbon, reverse osmosis membranes, or ceramic filters. Each type of filtration targets different contaminants. For example: Activated carbon filters remove chlorine, bad taste, and odours. Reverse osmosis systems eliminate heavy metals, bacteria, and dissolved salts. Sediment filters trap dirt, rust, and debris.

The cost of a home water filtration system varies depending on the type and complexity: Basic pitcher filters: $30 - $100 Under-sink filters: $150 - $600 Whole-house filtration systems: $800 - $4,000+ Reverse osmosis systems: $300 - $2,500 Installation and maintenance costs should also be considered, as some systems require regular filter replacements.

Most installations take 3–6 hours, but it may take longer if additional plumbing work is needed, such as relocating the system or upgrading gas/electric connections.