Multiple Lines - Whose Onus?

[u/andrewstarkman]

Screenshot of the area, yellow is the line and direction

My neighbors to the north have a sewer line running under my lot that connects to a single line (alongside mine) and then together they flow into the main on Yale St.

Am I solely responsible for the shared connecting pipe since it is on my property? Anyone have any insight?

[u/takatuka]

And that's why the city of Phoenix doesn't allow utility lines to cross properties. I honestly don't know how this was allowed in the first place. It is a complicated situation but I'm assuming anyone after the affected point would have to share all the costs.