Toilets that are leaking, moving, or making weird noises are a sign that something is wrong. Sometimes a toilet that is acting up can be a simple fix, as simple as fixing or replacing a flange. The toilet flange connects the toilet to the drainpipes leading to the outside sewer. Flanges are also responsible for keeping the toilet securely attached to the floor so it doesn’t rock back and forth, leak, or overflow. Flanges may seem like a small part, but they play a big role in the function of your toilet.