Water supply in a building is a critical aspect of its design, functionality, and maintenance, ensuring that residents or users have a continuous and safe supply of water for domestic, commercial, or industrial purposes. The water supply system in a building is a complex network that involves sourcing, storing, distributing, and managing water efficiently to meet the daily needs of occupants. A well-designed water supply system not only provides convenience but also maintains hygiene, supports fire safety, and contributes to the overall durability of the building. The primary source of water for a building can vary depending on location, availability, and quality requirements. Common sources include municipal water supply, borewells, groundwater, surface water from lakes or rivers, and, in some cases, rainwater harvesting systems. Municipal water supply is the most widely used source in urban areas, where water is treated, filtered, and delivered under regulated pressure. In rural or semi-urban areas, water may need to be pumped from wells or natural sources, requiring additional treatment to remove impurities before it is fit for use. Once water is sourced, it is