What is the maximum slope recommended for a drain field?

The maximum slope recommended for a drain field is 25%. This 25% slope ensures that water can percolate through the soil effectively. Steeper slopes could lead to rapid runoff rather than absorption, which is essential for the proper functioning of a septic system.

When drain fields are designed, maintaining an appropriate slope facilitates not only the movement of water but also ensures that sewage effluent has adequate time to be filtered and treated by the soil. This is crucial for preventing potential contamination of groundwater and ensuring the overall effectiveness of the septic system.

Therefore, adhering to the maximum slope recommendation of 25% helps maintain the efficiency and longevity of the septic system while reducing the risk of environmental issues.