40mm sink waste pipe connected into square downpipe?

Discussion in 'Plumbing and Central Heating' started by jamiller, 30 Dec 2011.

  1. jamiller

    jamiller

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    I have plumbed my old kitchen sink unit into garage. Just through the wall is a convenient plastic square down pipe - which I would like to discharge waste water into. This will save waste pipe running along back of bungalow to kitchen drainand & looking unsightly! Is it ok to do this and if so - how !! Cannot think of suitable connectors available. Thank you. John
     
  2. muggles

    muggles

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    Sounds like you're intending to run your waste into rainwater, which is not allowed, it must go to a foul drain
     
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  4. moggridgeplumbing

    moggridgeplumbing

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    You can only do this if you have a combined foul and rainwater drainage system. Assuming the rainwater pipe is connected to the drainage system and not going to a soakaway.

    You will not find a connection for waste pipe to rainwater downpipe. It can be done (Conversion) but would need to be looked into, if it meets regs. ;)
     
  5. jamiller

    jamiller

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    I believe on this 1963 bungalow - it is a combined system. The sink drain runs along the back of the property and on the corner of bungalow/garage (which is where I want to branch in), the rainwater downpipe drops into the same drainage pipe. Thanks for your replies.
     
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