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Overview


The private sewers, also known as sanitary drain-lines, are owned by the private premises' owners. These owners are responsible for maintaining the private sewers.

Used water from private premises, such as condominiums, commercial and industrial buildings, is sent to public sewers through the private sewer network.

What can you do as a private premises owner


1. Check your private sewers regularly

You can engage a contractor to check if your private sewers are leak-free and properly connected to the public sewer. This can be done by carrying out a leak test or other means.

View A Guide To Managing Private Sewer Leaks for more information.

2. Repair any leaks

You should carry out the necessary repairs, if any leaks are found in your private sewers. You can engage a contractor or contact PUB for assistance. 

Check out the list of contractors who have carried out sewer rehabilitation works in PUB's past and current contracts.

Private Sewer Rehabilitation Programme

  1. Under the private sewer rehabilitation programmes, PUB conducts checks and assists in the investigation of the private sewers within private premises (condominiums, commercial or industrial buildings). The identified defective private sewers will be rehabilitated subsequently.
  2. PUB has completed the following private sewer rehabilitation programmes:
    Marina Reservoir Catchment (2006 - 2011)
    Punggol and Serangoon Reservoir Catchment (2010 -2013)
    Jurong Lake Catchment (2013 - 2019)
  3. PUB is currently implementing the private sewer rehabilitation programme in the Western Catchment (2021 - 2026).
  4. The government provides the following assistance to premises owners, whose private sewers are found to be defective.
    1. Technical assistance
    2. List of contractors who are able to carry out the work