What is the minimum lot size required for OSSF if a private water supply is used?

The minimum lot size required for an on-site sewage facility (OSSF) when a private water supply is used is typically set at 1 acre. This requirement ensures that there is sufficient space to properly install and maintain both the sewage system and the water supply system without risk of contamination. Having an acre gives adequate separation distance between the sewage disposal area and the water supply, which is necessary for protecting the quality of the water and preventing any health hazards associated with sewage contamination.

This larger lot size requirement accounts for factors such as the absorption capacity of the soil, the potential for surface runoff, and the overall environment in which the sewage system operates. It is a precautionary measure to ensure public health and safety, promoting sustainable land use practices.