Study for the North Carolina Septic Inspector Exam. Use detailed flashcards and multiple choice questions with hints and explanations. Get exam-ready today!

Multiple Choice

A sanitary sewage system must be located at least how far from the normal pool elevation of a Class I or II reservoir?

Protecting a drinking-water source requires a protective buffer between a sanitary system and surface water. The normal pool elevation marks the typical water surface of the reservoir, so the distance is measured from that line to ensure there’s a safe separation for potential wastewater migration via groundwater or surface runoff. A minimum of 100 feet provides a practical buffer to reduce the risk of septic effluent reaching the reservoir, even with varying soil conditions, groundwater flow, and rainfall. Shorter setbacks offer less protection, while 200 feet is more than typically required unless site conditions demand it. Therefore, the standard minimum distance from the normal pool elevation of a Class I or II reservoir is 100 feet.

Protecting a drinking-water source requires a protective buffer between a sanitary system and surface water. The normal pool elevation marks the typical water surface of the reservoir, so the distance is measured from that line to ensure there’s a safe separation for potential wastewater migration via groundwater or surface runoff.

A minimum of 100 feet provides a practical buffer to reduce the risk of septic effluent reaching the reservoir, even with varying soil conditions, groundwater flow, and rainfall. Shorter setbacks offer less protection, while 200 feet is more than typically required unless site conditions demand it. Therefore, the standard minimum distance from the normal pool elevation of a Class I or II reservoir is 100 feet.