How does heavy rain affect a mound soil absorption system?

Heavy rain can significantly impact the functioning of a mound soil absorption system. During periods of heavy precipitation, the naturally occurring soil moisture levels become saturated, which creates a condition where the system may struggle to effectively absorb wastewater. This saturation can lead to a temporary reduction in the rate of absorption because there is less available air space within the soil for microbial activity, which is critical for the breakdown of wastewater.

Additionally, when the soil reaches its saturation point, the excess water can lead to ponding on the surface, increasing the likelihood of discharge to the surface. This surface discharge can pose health risks and environmental hazards, as it can lead to wastewater being visibly present in the landscape, potentially contaminating nearby water sources or creating unsanitary conditions.

In this context, recognizing the relationship between heavy rainfall and system performance is crucial for maintaining the efficiency and integrity of mound systems. The correct understanding of these dynamics helps in making informed decisions regarding system maintenance and necessary interventions during adverse weather conditions.