Does anyone understand Sewer Maps?

21 May 2011
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United Kingdom

Does anyone understand Sewer maps. I am trying to take a guess on how the property outlined in purple with a no2 connects to the sewer.

Whats also a bit odd is that the house opposite has a public sewer running across the garden but not connected to anything else public?!


Screenshot 2020-04-26 at 8.43.58 PM.png

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Where's the key? And don't say under a plant pot.

Find the bathroom and kitchen, see which way the road slopes and there you have it. Drains are either going along the back or front, or down the side towards the road.
Anything under 6", or only serving one property, is usually not marked. Across the road, seems that whoever drew it wasn't sure where that sewer went, so has only plotted the bit they were aware of. Red is possibly surface water, may even go to a soakaway, so run wouldn't continue.

You are going to have to visit site, lift covers and see where the drain run. Impossible to say from that picture, too many factors involved.

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