For hydro-jetting, separate the line, install a backflow preventer, start with lower PSI, then increase as required

https://foxtrot-wiki.win/index.php/Expert_Septic_System_Maintenance_Plans_That_Won%27t_Break_the_Bank

For hydro-jetting, isolate the line, install a backflow preventer, start with lower PSI, then increase as needed, using appropriate nozzles to scour biofilm, roots, and scale without harming pipelines.