We just purchased a house that's about 30 years old. On the first floor a water mark developed on the ceiling, so I've been debugging the upstairs plumbing. My kids' bathroom toilet had some moisture around the base, but I have a seven year old son with imperfect aim so it's hard to know where the source is.
I took up the toilet intending to replace the wax seal. I was hoping the flange would be either obviously ok or obviously in need of replacement; instead I can't tell. As you can see from the picture, a blue coating is clearly chipped and deteriorating. But that doesn't seem crucial to me, and the part under has no visible signs of deterioration.
Am I ok not replacing the flange?
EDIT: I should also say that the bolt on the side where the blue is most deteriorated wiggles quite a bit. Is that a sign that the flange is cracked?