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Can a new soil stack take rainwater as well as dirty water and sewage?

Posted by Jonathan Greenwood, on Thu 30 Jun 2016 01:41pm

I want to reconfigure a bathroom and add a toilet which will need a new soil pipe including laying a pipe to a manhole where an existing toilet flows into. The wall space is cluttered with a pipe from the gutter and several pipes the sink, bath etc. The question is can a new stack pipe replace all these independent pipes or at least have them all flow into it or is there some regulation that rain water needs to be treated differently than soil water? Its a 1950's house and I've noticed that rain water goes to a different manhole than soil water from sinks and toilets. There is no septic tank or soak away - everything is connected to the main sewer. Do I need different tradesmen or a drainage/groundwork specialist?

Lauren Dyno Plumbing

Sat 02 Jul 2016 06:47am

You should keep surface water and sewerage separate as best practise. Many people change this and usually fail to seal the souls stack correctly and then other problems emerge. You do not want sewerage leaking anywhere. Get a decent plumbing company in and they will do all this work for you. If there's any ground work make sure the company has the correct certification to carry out the work.

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