Inside the tank, the heavier materials should sink to the bottom, which creates a thick sludge. Lighter materials like oil or grease tend to float up towards the top and form a layer of scum.

Waste naturally separates into three parts inside a septic tank: Solids (sludge) sit at the bottom of a septic tank. Wastewater settles in the middle of the tank.

The national average cost to pump a septic tank is $400 with a high cost of $600 or a low cost of $200, which depends on your location, tank size and other factors. Frequently Asked Questions (FAQs) ...

Woman Rescued After Falling 25 Feet and Getting Trapped Inside Old Septic Tank in California The woman was so deep in the hole, she was “not visible” from the surface, officials said on social ...