Many septic system problems can occur after a heavy snow season or after substantial rainfalls. Significant rainfalls and snowmelt can cause septic systems to flood in and around the leaching bed area, leaving the system hydraulically overloaded. This makes the septic effluent impossible to percolate into the septic systems drainage field. The water just has nowhere to go! The water from you septic system eventually backs up into your home, or floods your yard and the surrounding areas. This allows untreated sewage to flow in local waterways causing potential environmental issues.