No excavation for a sewage seepage pit, disposal field or septic system shall extend closer than how many feet to a water main or branch water line?

The correct distance for excavation of a sewage seepage pit, disposal field, or septic system to a water main or branch water line is 10 feet. This minimum boundary is established to ensure the protection of the water supply from potential contamination. The proximity of sewage systems to water lines is a critical consideration in plumbing and public health, as pathogens or harmful substances can leach into the water supply if proper separation is not maintained.

The regulation requiring a distance of 10 feet helps to mitigate risks associated with possible leaks or failures of the sewage system, providing a buffer zone that enhances the safety of drinking water sources. This safety measure is a standard protocol in plumbing and wastewater management to promote public health and safety.