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

https://foxtrot-wiki.win/index.php/The_Homeowner%27s_Guide_to_Spending_plan_Septic_System_Emptying_and_Maintenance

For hydro-jetting, separate the line, install a backflow preventer, begin with lower PSI, then increase as needed, utilizing proper nozzles to search biofilm, roots, and scale without damaging pipes.