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  2. Grinder pump - Wikipedia

    en.wikipedia.org/wiki/Grinder_pump

    Grinder pumps should not require preventive maintenance. However, grinder pumps that use floats to sense the level in the holding tank are prone to grease buildup that may turn the pump on unnecessarily, or not turn on the pump at all, causing the tank to fill up and sewage to possibly back up into the home or yard.

  3. Backflow prevention device - Wikipedia

    en.wikipedia.org/wiki/Backflow_prevention_device

    Backflow prevention device. The simplest, most reliable way to provide backflow prevention is to provide an air gap.An air gap is simply an open vertical space between any device that connects to a plumbing system (like a valve or faucet) and any place where contaminated water can collect or pool.

  4. Drain-waste-vent system - Wikipedia

    en.wikipedia.org/wiki/Drain-waste-vent_system

    A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.

  5. Air gap (plumbing) - Wikipedia

    en.wikipedia.org/wiki/Air_gap_(plumbing)

    When installed and maintained properly, the air gap works as described above, and prevents drain water from the sink from backing up into the dishwasher, possibly contaminating dishes. To further illustrate the air gap, consider what could happen if the air gap were eliminated by attaching a hose to the faucet and lowering the hose into a sink ...

  6. Grease trap - Wikipedia

    en.wikipedia.org/wiki/Grease_trap

    In the US, sewers back up annually an estimated 400,000 times, and municipal sewer overflows on 40,000 occasions. [ 5 ] [ full citation needed ] [ 6 ] The U.S. Environmental Protection Agency has determined that sewer pipe blockages are the leading cause of sewer overflows, and grease is the primary cause of sewer blockages in the United States ...

  7. Does homeowners insurance cover septic tanks? - AOL

    www.aol.com/finance/does-homeowners-insurance...

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