What is the minimum separation distance between a water well and a POWTS holding tank?

• A. 10 feet
• B. 5 feet
• C. 15 feet
• D. 25 feet

Answer: (A)

Keeping a safe distance between a water supply well and a POWTS holding tank is about protecting drinking water from wastewater contamination. A holding tank contains raw sewage, and if it leaks or overflows, contaminants can move through the soil toward the groundwater and potentially reach the well. The minimum setback of ten feet provides a basic barrier that reduces the likelihood of contaminants reaching the well while still allowing practical siting. If the well is closer than this, the risk increases and the installation would not meet standard requirements. In practice, soil type, groundwater depth, and local codes can push this distance higher, so always check the local rules.