Can a mound system fail during drought conditions?

Understanding Mound Systems in Drought Conditions

Mound systems rely on a combination of aerobic and anoxic zones to break down waste. During drought conditions, the reduced water flow can lead to inadequate percolation, causing the mound to become starved of oxygen. This can result in anaerobic conditions, where bacteria thrive, producing odors and reducing the system’s ability to break down waste.

Effect of Reduced Percolation on Mound Systems

In a typical mound system, the percolation rate should be around 1-2 gallons per minute (gpm) to ensure adequate breakdown of waste. However, during drought conditions, this rate can drop significantly, often below 0.1 gpm. This reduced flow can lead to a buildup of solids and scum on the surface, causing the system to fail.

Designing Mound Systems for Drought Conditions

To mitigate the effects of drought on mound systems, it’s essential to design the system with a larger capacity for water storage. This can be achieved by increasing the diameter of the mound or using a larger tank to store rainwater or greywater. Additionally, incorporating a recirculation system that allows for water reuse can help maintain adequate percolation rates, even during prolonged droughts.