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Hasibul Alam Posted 5 years ago
Grammar

Don't understand "which could cause sewers to back up "

The Sewerage and Water Board sent a notice just before noon that a number of its stations throughout the city were losing power, which could cause sewers to back up in homes if residents did not reduce the amount of wastewater they send into the system through showers, dishwashing and toilets flushing
  

Top answer

to back up ~ to operate in the opposite direction from its usual operation Sewer backup: CJ

— CalifJim

  • to back up ~ to operate in the opposite direction from its usual operation Sewer backup: CJ
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1 Answers
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to back up ~ to operate in the opposite direction from its usual operation

Sewer backup:

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