Illinois Plumbing Code Practice Exam 2025 – All-in-One Guide for Exam Success!

The correct answer is indeed 50 feet, 10 feet. The Illinois Plumbing Code establishes specific minimum distances that building drains, branches of building drains, building sewers, or sanitary sewers must maintain from wells or buried suction lines to prevent potential contamination of the water supply.

Maintaining a distance of 50 feet helps safeguard the quality of water by minimizing the risk of pathogens or contaminants migrating from wastewater sources into potable water sources. The additional requirement of 10 feet for certain pipe types also addresses specific risks related to those materials, emphasizing the need for greater separation in specific scenarios.

The 50-foot and 10-foot distances align with health and safety practices intended to protect public health, ensuring that sanitary systems do not adversely affect groundwater or well water. Maintaining these distances is crucial for compliance with health regulations and the overall integrity of the plumbing system.