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                                                                                                                                                                  Updated 26 January, 2014 > site map > types of drainage systems >  combined                                                   

Combined Drainage System

A system that carries both foul water and storm water from a property, usually found on older properties where a local authority combined sewage system is the only discharge point.

If your property predates the sixties chances are that your storm water and foul water run to the same sewer unless you have a river on your doorstep or a sub-soil suitable for a soak-away, as the population grew and more houses were built the more storm water was being added to the drainage systems.

You can not predict the volume of storm water that will fall at any one time and the original sewers could not cope with the sheer volume of water passing through them, and as we have found over the last few years serious flooding problems occur so It is now standard practice to have separate foul water and storm water systems


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