How must the disposal field trenches be aligned during construction?

The disposal field trenches must be aligned following the natural contours of the ground to promote effective wastewater treatment and prevent negative environmental impacts. This alignment allows for proper drainage and encourages the distribution of effluent evenly across the absorption area, which is crucial for the survival of the microorganisms that break down waste in the septic system.

When trenches are aligned with the natural contours, the flow of effluent aligns with gravity, minimizing the risk of pooling and maximizing absorption. Additionally, this method helps to reduce soil erosion and protects nearby water sources from potential contamination. It also adheres to best practices in septic system installation, ensuring that systems function efficiently and sustainably over time.

Other methods of alignment, such as straight lines, vertical orientation, or random placement, might not take full advantage of the natural topography and can lead to ineffective wastewater treatment and increased maintenance issues.