In terms of placement, how should the mound be aligned on sloping sites?

The proper alignment of the mound on sloping sites is essential to ensure effective drainage and prevent erosion. When the longest dimension of the mound is oriented parallel to the site contours, it allows for the best potential dispersal of effluent, which is critical in preventing surface runoff and ensuring that the septic system operates effectively.

By aligning the mound in this manner, the gravity flow of water is managed more efficiently, allowing it to infiltrate into the soil rather than running off the slope. This helps in maximizing the absorption capacity of the soil and minimizes the risk of pollution, as water is less likely to travel directly off the site.

Moreover, this configuration aids in promoting the natural filtration of contaminants through the soil, which is a fundamental purpose of a septic system. On sloping sites, maintaining this alignment is crucial for the long-term sustainability and efficacy of the installation, ensuring compliance with environmental regulations and protecting local waterways.