What is the typical depth range for trenches in an Absorption Field?

The typical depth range for trenches in an Absorption Field is generally 12-18 inches. This depth is optimal for ensuring that wastewater can effectively percolate through the soil while providing sufficient soil material above the trench to facilitate the necessary filtration and treatment processes.

At this depth, effluent can be adequately absorbed and treated by the surrounding soil, which is crucial for preventing contamination of groundwater and ensuring proper decomposition of organic materials. The specific depth can also depend on local soil conditions, climate, and regulations, but the range of 12-18 inches is widely accepted as standard in many practices due to its balance between effective absorption and natural treatment processes.

Deeper trenches may lead to greater challenges in soil saturation and reduce the efficiency of treatment, while shallower trenches might not provide sufficient soil coverage for effective filtration. Therefore, 12-18 inches is recognized as the most appropriate range for ensuring that the system functions correctly while maintaining environmental safety.