What is the required trench slope for gravelless system construction?

The required trench slope for gravelless system construction should be level. This is crucial because maintaining a level trench ensures that the system functions correctly, allowing for proper distribution and infiltration of wastewater. A level trench avoids issues related to water pooling or excessive flow that could compromise the effectiveness of the sewage system. When the trench is sloped, it can lead to uneven distribution of effluent, which may cause localized saturation or inadequate treatment of wastewater.

In gravelless systems, where alternative materials and design practices are employed, a consistent and level trench is essential for maintaining uniform moisture levels and promoting optimal conditions for biological breakdown of nutrients in the effluent. This practice helps to ensure compliance with health and environmental regulations while enhancing overall system performance.