Build-up of biomat over the life span of a septic system.
What is biomat in the septic drainfields (a.k.a. leachfields)?
Biomat is composed of anaerobic micro-organisms (organisms that don’t require high levels of oxygen). These organisms anchor to the soil and gravel surrounding the drainfields.
“The biomat forms first along the trench bottom near the perforations [in the drainfield piping which delivers the effluent along the trench] where effluent is discharged, and then up along the trench walls.” https://inspectapedia.com
A family in Yorktown Heights, NY was having septic system problems; their septic system was in “failure” or no longer functioning properly. A system is determined to be in failure when either the toilets and sinks do not drain properly or the waste water is puddling on the surface in the yard.
A Mahopac, NY client’s septic system was in failure. All septic systems have a limited life. After years of use the fields become clogged with septic sludge and no longer process the septic water properly.
A family in Montrose, NY was relocating. When a home inspection was done, their septic fields were found to be in failure. They contacted Precision Excavating Inc. to come up with a solution to the septic failure so that they could sell their home.