How to drain a patio with no rainwater gulleys or soakaways

24 Aug 2004
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United Kingdom
Not sure if this is in the right place as it relates to patios, drains, gardens..

Here is the problem. We own a mid terrace in a group of 3 properties built in 1992. The 2 end terraces have the down-pipes that collect rainwater from the roof. No downpipe, surface water drainage on my property in the middle of the terrace.

I am planning some patio lanscaping in the back garden and need some advice on how to drain it. It is quite a small garden (3Mtr Wide x 5 Mtrs deep) not really much room for a "rain garden".
We live in an area with Devon clay soil, soakaways not really an option.

There is a small inspection chamber next to the back of the house, but this is for foul waste, so I doubt I could drain the patio into this.

Looking for idea's really. Thanks for reading!
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Are you sure the manhole is foul only and not a combined sewer?
I would recommend contacting the local water authority who should be able to tell you if it's a combined sewer or not and if you could drain into it. The manhole maybe part of a public sewer (does waste from any other house flow through it?) in which case there maybe a fee for connecting a new pipe into it.
failing to find a storm drain to tap into. A soakaway is a option. Unless you'd like to create a bailing hole i'd just form a soakaway under you new patio. Keeping it as far as pos into the garden!!
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Homeowners are 'encouraged' to drain all rainwater within the boundaries of the property.

However this is not a strict rule. Soakaways are always the first option.

Storm systems are the next.

Where the first two can not be incorporated then it is acceptable for a combined system to be in operation.

I would say a mid terrace with clay sub-soil is a candidate for a combined foul/storm system.

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