Roots In Sewer Line Video

Recently we had a tree-roots blockage in the cast-iron sewer line between our rental house and the town sewer main. The last/first time that happened was 3 yrs. ago. The cost of having it reamed out and a camera run down it was horrendous, though at least the guy marked the approximately location on the lawn with spray paint. He wanted to dig down (with machine, I guess) and replace the offending section of pipe(s); the problem seems to be at a joint as the pipe does not seem broken or crushed. The pipe is about 3 ft. deep. But that is way too expensive and possibly could open a whole can of worms in my opinion. So your copper sulfate crystals method has considerable appeal. It's either that or the foaming stuff (like RootX or Roebic's product) on the inside of the pipe, but that is also quite expensive. My big concern is what the copper sulfate will do to the tree (trunk some 20-30 ft. away), a red maple. If it will kill the roots in the vicinity of the pipe problem, what will it do to the tree? I don't want to cure the sewer problem but kill (or damage) the tree. And where can copper sulfate crystals (or another version of it) be purchased? We're in a small town in a farming area, if that's any help. Thanks!

Most farm supply stores will have copper sulfate crystals.

How can i talk to a person who specialized on sewer lines and tree roots. My neighbor has been planting trees next to my sewer liee and would not respect the legal problem that I spent $35,000

I'm curious what effect is this going to have on other greens around the area. The underground water tends to travel and will definitely spread the copper sulfate, which will then get to my tomato plants and other vegetation planted in the vicinity.

I doubt this is a safe approach health-wise, but i'm by no means an expert in the field.

How safe is this approach health-wise?