are the only acceptable septic tank treatment for promoting a healthy, natural bacterial ecosystem; maintaining an effective drain field; and protecting the health of the local groundwater.

where wastewater flows for treatment, and the drainfield, where wastewater evaporates or drains into the soil. Septic system drainfields, also called leach fields or absorption fields, are ...

Penn State Extension is surveying septic system owners or users to learn more about septic system operation and maintenance practices across Pennsylvania. Extension’s water quality and quantity team ...