October 12, 2015
The package I got did not include a new water supply line. If your old one is in good condition, you could re-use it, but, for a few extra dollars, I think a new supply line is good insurance against a potentially disastrous leak. As for the flange, it is the round metal or plastic ring around the drain pipe in the floor that holds the bolts that hold the bowl down to the floor. Replacing it is a pretty major plumbing job, but, unless it's broken or rusted out to the point where it won't hold the bolts anymore, you don't need to replace it.
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