Locating underground sewers and drains

Question

How do you find out where underground sewers and drains are actually located? Is there a website or service that I could use to find out more information on this? Thanks for your time.

Trevor · Accepted Answer

The best way is to pick up the manholes which should be outside in the front or back gardens or at the side of the house once up run water down the sink and flush the toilet you should be able to work out where they are coming from and to by the way the water is running too.

If there are no manholes you will need to have a CCTV Survey of the drain line by removing the toilet

Kevin · Answer

I would lift a manhole cover and see which way they run, from manhole to manhole, they all ways run straight

Deland · Answer

Is there a manhole in your garden rear/front or maybe your neighbour's gardens? 
Many thanks

Stuart · Answer

Hi

The drains that are owned and adopted by a water authority will be mapped and available to them but not usually to the public. There is software that accesses these maps but you have to pay for a licence from the owning water board to gain access.
If the drainage system is on private property then you will have to have a drainage survey carried out by a drainage company. Ask them to map out the drainage and then you will have a record of the drain location, size and direction of flow.

Graham · Answer

Try speaking to your local water undertaking who will maintain a complete record and plan of everything that is in their responsibility.

Locating underground sewers and drains

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