Plumbing and Mechanical Codes are regulations that set standards for the installation and maintenance of plumbing and mechanical systems in buildings. These codes ensure safety, health, and environmental protection by outlining requirements for materials, design, and construction practices. They cover aspects such as water supply, drainage, heating, and ventilation systems. These codes are developed by organizations like the International Association of Plumbing and Mechanical Officials (IAPMO) and the National Fire Protection Association (NFPA). Compliance with these codes is essential for obtaining building permits and ensuring that systems operate efficiently and safely, protecting both occupants and the environment.