A sewage ejector pump, or pump-up ejector system, pumps sewage water uphill from a bathroom, laundry room, or other plumbing fixture below the level of the main sewer or septic line.
Typically, sewage and drain wastewater is moved downward by gravity to the main sewer or septic line. So, if the waste needs to move upward, a sewage ejector pump is required.
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