Clean or replace water inlet assembly on LG dishwasher
Not sure how to disassemble that, but I would suggest doing an empty load with a few cups of bleach. Maybe once a month or so. I would assume it is dirty water side and not entering back into the machine during a wash cycle. If so, the mold may not be a huge issue. But try the bleach trick with maybe the hottest setting the machine can do. Do this a few times in a row (I know water waste) but if its not causing any other issues with the machine, i would just run the bleach and monitor it. Why replace it if its not broke!!!