NSW Urgent : What does this line mean from Seware Service Sheet? (please check image)

What does this line mean (next to red) from Seware Service Sheet? (please check image)
Will there be any problem in near future in case of rebuilding house or even bank valuation of current property?

Thank you very much!

Sewerage Service Sheet

 

Which is the front of the block?
As far as I can tell they would be the sewer lead ins from the main sewer line along the boundary. They can be moved and redone but you can't do anything to the one along what I am guessing is the rear of the block

 

Thanks, the left side of image is actually front side of house. So what you are saying is the diagonal line is sewage line of house and is not an issue?
In terms of rebuild house or when bank dies valuation of current property?

 

Are you in Sydney?

In Sydney, Sydney water will want you to be a certain distance from the sewer main to the building, if not they will make you concrete encase the sewer main or redivert.

The line you have shown is just your domestic sewer line, you can adjust that to suit no worries just liase with your plumber.

The vertical sewer at the rear is the authority sewer main and yes there are restrictions but nothing that cant be worked around

I don’t see any issues with this from my experience as you won’t be building that close to the boundary anyway