mold behind drywall near plumbing 6

https://getmoldremediationstlouislife.solsticebrief.com/posts/hidden-mold-behind-drywall-a-st.-louis-rental-home-case-study

After noticing a musty smell in the bathroom for weeks, I finally cut a small hole in the wall near the shower and found black mold spreading behind the drywall. The plumbing had a slow leak in the copper pipe, keeping the insulation and gypsum board constantly damp. It's a prime spot for mold because the moisture has nowhere to escape, and now I have to replace a whole section of the wall and fix the pipe.