Don't let trees grow close to your septic system

People who lived in the house before us let a dozen trees grow for 30 years to become 30+ ft tall about 5ft from the septic system (and to make it even more fun, into the power lines along our driveway).

Not having an acute problem at the moment but they've got to come down before there is a huge problem.

And I'm bitter about it because it's going to be a huge PiTA or big dollars to pay for help.