What is the required distance from wells and underground cisterns to sewer pipes with watertight connections?

The correct answer is based on established regulations regarding the placement of sewer pipes in relation to wells and underground cisterns to ensure safe water quality and public health. The requirement for a minimum distance of 20 feet from sewer pipes with watertight connections to these water sources is intended to provide a buffer that reduces the risk of contamination. This distance helps to mitigate the potential for groundwater pollution that could occur should there be any failures or leaks in the sewer infrastructure.

Maintaining this 20-foot separation is a standard practice in wastewater management and environmental protection. It aligns with the principles of preventing cross-contamination between drinking water sources and wastewater systems, ensuring that the integrity of the water supply is upheld. This standard helps to safeguard public health by minimizing the chances that pathogens or harmful substances from the wastewater could infiltrate the groundwater that supplies wells and cisterns.