In West Texas, what is a suitable OSSF system for 16 inches of Class Ia soil over fractured rock?

A lined evapotranspiration (ET) or mound system is suitable for conditions where there is only 16 inches of Class Ia soil over fractured rock because these systems are specifically designed to deal with challenging soil conditions. In areas where soil depth is shallow, and underlying geology, such as fractured rock, can be a limiting factor, lined ET or mound systems provide an effective solution for wastewater treatment and disposal.

These systems create a raised bed that involves a liner to prevent effluent from percolating directly into the underlying rock, which could lead to contamination of groundwater or inadequate treatment of wastewater. The mound acts as a treatment area, allowing for the proper filtration and absorption of effluent before it enters the subsurface environment. This configuration is particularly crucial in regions with limited soil depth, where conventional systems may not function effectively due to insufficient soil to adequately treat the wastewater.

In contrast, conventional septic systems might not perform adequately in settings with limited soil and rocky substrates. Sand filter systems may also be less appropriate due to their specific requirements for soil depth and conditions. Finally, drip irrigation systems, while useful in many contexts, typically require more soil depth and consistent moisture conditions than what fractured rock scenarios can provide. Therefore, the lined ET or mound systems offer a