Where do i put my soakaway?

[NigelC]

I need to put in a new soak away as I don't know where the old one is and the gully between my house and patio fills up quickly, it does drain but slowly. The problem I have is the main sewer runs along my back garden, isn't very deep and runs about 1.5 - 2.0 metres from the house wall. I'm worried about disturbing the sewer and I'm convinced the sewer pipe is the same height as where I need to lay a soakaway pipe. I'm conscious of the fact that a soak away should be 5 metres from the house wall. I know I can't discharge it into the sewer too. Does anyone have any advice for me please?

Edited September 9 by NigelC

[ProDave]

Start with posting an anonymised plan or aerial view showing your plot layout and what you know about what is there.

[saveasteading]

20 minutes ago, NigelC said:

sewer pipe is the same height as where I need to lay a soakaway

Can you look in manholes in either direction  to measure the pipe depths?

[Dave Jones]

drop it into the sewer, helps keep the pipes clean.

[FuerteStu]

17 minutes ago, Dave Jones said:

drop it into the sewer, helps keep the pipes clean.

The rivers however... End up way worse

[FarmerN]

3 hours ago, Dave Jones said:

drop it into the sewer, helps keep the pipes clean.

So perhaps the sewage discharges to rivers, during wet weather, are not entirely the water companies fault.