Is A Mound System Better For Poorly Drained Soil?

Conventional Septic System Limitations

Conventional septic systems rely on soil absorption fields to treat wastewater. However, in areas with poor soil drainage, water can’t penetrate the soil, making it difficult for microorganisms to break down waste. This can lead to system failure and the need for expensive repairs or replacement.

Mound System Design for Poorly Drained Soil

A mound system can be an effective solution for areas with poorly drained soil. By creating a raised mound above the surrounding soil, a mound system increases the soil’s permeability and allows water to drain more efficiently. This design typically involves elevating a chamber or series of chambers above the surrounding soil, creating a flow path for wastewater to infiltrate the soil. In general, a mound system requires a 3-5 foot high mound with a 20-30 foot long treatment area.

Maintenance and Perc Test Considerations

Regular maintenance is crucial to the success of a mound system. It’s essential to conduct a percolation (perc) test to determine the soil’s ability to absorb water. A minimum perc rate of 1-2 minutes per inch is typically required for a mound system. Ongoing maintenance tasks include inspecting the drainfield, checking for signs of system failure, and ensuring proper waste disposal to prevent back-ups and system contamination.