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Wisconsin | you still want the sludge above the level of the filter, the filter will not stop scum from flowing out if the scum gets down to the level of the filter, or it will plug the filter and your toilet will back up into the tub. The water leaving the tank is supposed to come from below the surface to keep the scum in the tank, if the scum is too thick, it will plug eventually. These two levels are what determine when you pump a septic tank, only answer. | |
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How often should a septic tank be pumped?
