Path of irrigation pipes
 

I have been doing some work on my irrigation system and find that the builders seem to have placed the pipes in some odd places. Does anyone know if there is a way to discover where the irrigation pipes are on my lot through drawings or plans? We live in one of the Villages just south of Sumter so this is not a newer build.

Thanks in advance.
(please keep responses relevant to this question or irrigation - thanks.)

Don't laugh it does work not exact but close, not only will it identify. a plastic water line but CATV Electric Telephone lines buried. Worked for a utility for 40 years normally used a $5000 piece of locating equipment for wired utilities but that would not locate a plastic water line unless metallic, trace line was installed.
https://m.youtube.com/watch?v=g5znkwVFiw8

I just talk to an irrigation guy today that was at my neighbor's house.

I ask if there was some way to find/follow the PVC irrigation pipes, and he said no.

Also, I don't know where my control valves are.
Those he said can be traced by reading/following the electric wires buried underground.

I have to try holding those cobber wires together to find my pipes.

I had to dig up the side of my house to understand the direction of the pipes. They had damaged the pipes somehow so when I moved in the side of my house was flooded all the time because of pinhole fractures in the incoming water pipe. Warranty had to come out at least 5 times until the leaks had all stopped. I had a new birdcage put in so I wanted to also reroute some sprinklers and put in a large drainage pipe that was seriously needed. I think they didn't do a very good job to start with.