Last reviewed: 23.5.2011 - 6.18pm
A tell tale sign that your home is misconnected is when a waste pipe falls into the same drainage gulley as a rainwater drainpipe from the roof - see image below.
Example of misconnected external pipework
Also, if you have a manhole, which your foul waste runs through, there may be a surface water pipe running in parallel. If this pipe is open within the manhole and your foul pipe becomes blocked, this will cause wastewater to overflow into the surface water pipe.
A reputable plumber or builder should be able to rectify problems of this nature.
Customer leaflet on misconnected pipes
Bin it - don't block it
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