I don't see the problem, myself...
We have tens of thousands of private properties built over public sewers, with rarely a problem and almost never beneath the actual property. Half of London is built like this.
It's more often the manholes surcharging due to blockages caused by customers dumping fat, nappies and a whole host of things you wouldn't believe. If you're worried about pipes under your house, look to your own private drainage and consider who built those.
RobinBHM":2k85tfjx said:
You would like to think there would be a record of a main drain though #-o
Only if the developer bothered to file them (properly, if at all), and didn't do anything dodgy to get the build finished... which they often do, hence not filing them, hence water companies not knowing where certain pipes are.
This being a small local public sewer, I doubt there'd be much in the way of problems. It's also more likely that the map is accurate, as something that size would have been public for some time, if not always.
phil.p":2k85tfjx said:
The water authority were often responsible before that if other people's sewers ran into yours. Section 28, iirc.
Section 24, but only from the point where the sewers of two distinct curtailages joined, and only if they were built after 1937.
More recently, Sections 102-105 have meant water companies adopted a great many more sewers, from the point at which the connection becomes shared, irrespective of land or curtailage.
Steliz":2k85tfjx said:
I have no expertise in this subject but I would like to believe that a house would not be allowed to be built over an existing main sewer
Why not?
Many of the roads, railways, schools, churches and so on have already been built over them. Most cities would not exist if we didn't build like that.
Steliz":2k85tfjx said:
From a sewer maintenance point of view it would be a nightmare for the water authority.
Why?
There are easily accessible manholes upstream and downstream, which would work fine even with large plant. *I* could probably park a tanker at either end. If anyone is having problems dealing with this, they don't belong in the industry... and would have a heart-attack if they worked on the railways!