I never fully understood how a simple flush of a few litres of water sends all my poop and toilet paper to the sewers. If the main drain is in the basement 10 feet below the surface, does that mean the sewer lies further below the surface? I would love to see a video on what actually happens when you flush the toilet. TIA.
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If downward slope doesn’t exist, then they have what are called lift stations. Big tanks with pumps to pump the sewage up high enough so it can then continue on its way to treatment plant.
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