6/9/25. Leak coming through basement ceiling below main level bathroom. Cut open the ceiling and discovered cast iron piping leaking. Recommend replacing the section of cast iron with pvc piping. 6/10/25. Today, I removed a larger section of sheetrook ceiling. Removed the damage section of the cast iron drain line and replaced with pvc piping. Removed and replaced the toilet flange. Reset the toilet onto the flange with new flange bolts. Turned on the water and tested the line thoroughly by flushing and running the sink. Tested with no leaks.