If lateral lines must be installed on a contour, what does it imply?

When lateral lines are required to be installed on a contour, it means that the installation must follow the natural shape of the ground. This approach ensures that the lateral lines are positioned in a way that maximizes the efficiency of the septic system by taking advantage of the natural drainage patterns and preventing water from running off too quickly.

Following the contour is essential because it helps in managing water flow and soils effectively. Installing on contour prevents issues such as erosion and minimizes the risk of over-saturation in specific areas while promoting even distribution of effluent across the leach field.

Overall, this method contributes to the longevity and performance of the septic system, ensuring it operates efficiently within its design parameters.