By A Mystery Man Writer
A well-functioning septic tank is the heart of this system, and it consists of three crucial layers: the scum layer, the effluent layer, and the sludge layer.
Three Layers in a Septic Tank: Scum, Effluent, and Sludge
Should You be Concerned if a Septic System has No Scum Layer?
What Is A Septic System? Dans Plumbing & Septic Services MN
What Is A Septic Tank & How Does It Work?
Blog A-1 Septic Tank Service Inc
How does septic work? — ONSITE
What to Expect When Getting Your Septic Tank Pumped
How a Septic System Works -- and Common Problems
Septic Basics - Master Rooter