QUESTION: I have been reading about the clogging mat and how bad that mat is for a septic system. In some of your columns, you’ve referred to the biomat. Is this the same thing? Can you explain its impact on septic systems?
ANSWER: I have written about the biomat before and its necessary function in the treatment of sewage tank effluent by the soil system. Perhaps a little refresher might be in order, since the question has been raised.
As effluent enters the soil treatment system it begins to percolate into the soil on the bottom of a trench or bed system.
