What is the minimum horizontal distance between a sanitary sewage treatment and disposal system and a private water supply source?

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Multiple Choice

What is the minimum horizontal distance between a sanitary sewage treatment and disposal system and a private water supply source?

The key idea here is protecting drinking water by keeping a safe separation between where sewage is treated/disposed and where a private water supply draws its water. Sewage effluent can contain bacteria, viruses, nutrients, and other contaminants that can travel with groundwater. A setback gives a practical buffer so contaminants are unlikely to reach the well, even as groundwater moves through the soil. The standard minimum distance used in North Carolina is 100 feet, which balances typical soil conditions and groundwater flow with safety. If site conditions raise the risk of contaminant transport (shallow water table, highly permeable soils, etc.), this distance may be considering in planning, or alternative safeguards may be needed, but 100 feet is the established minimum.

The key idea here is protecting drinking water by keeping a safe separation between where sewage is treated/disposed and where a private water supply draws its water. Sewage effluent can contain bacteria, viruses, nutrients, and other contaminants that can travel with groundwater. A setback gives a practical buffer so contaminants are unlikely to reach the well, even as groundwater moves through the soil. The standard minimum distance used in North Carolina is 100 feet, which balances typical soil conditions and groundwater flow with safety. If site conditions raise the risk of contaminant transport (shallow water table, highly permeable soils, etc.), this distance may be considering in planning, or alternative safeguards may be needed, but 100 feet is the established minimum.

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