What is the minimum spacing requirement for holes in gravelless piping?

The minimum spacing requirement for holes in gravelless piping is essential to ensure effective wastewater treatment and distribution. Spacing the holes at 120-140 degrees allows for optimal water flow and even distribution of effluent through the piping system. This specified angle ensures that there is sufficient coverage of the surrounding soil with treated effluent, which is vital for the natural filtration processes that help to break down contaminants.

In contrast, having holes spaced closer together or at angles that do not meet the minimum requirements could lead to ineffective treatment and potential saturation of certain areas, which might increase the risk of system failure. The selected angle of 120-140 degrees strikes a balance between providing adequate dispersion while preventing over-concentration of flow, which can negatively impact the performance of the septic system.