In my apartment my bathroom sink is having problems. Whenever i turn the water on the water collects in the sink of course. The problem is the sink takes a very long time to drain the water. My sink is draining the water but it takes a long time to drain i saw about 30 minutes to drain. What is wrong with my sink?
Call the landlord. It's his responsibility to take care of that for you.
Look if there is hair in the drain. If this was not the reason, call the plumber.
There is a bunch of hair from your head clogging the drain.
It is clogged & needs to be snaked out. Call your landlord about this. Let them know that you wanted to call them before using any caustic chemicals, like Drano & such. A snake will be best because it will remove the clog, rather than flush it onto another area. You rent, so you do not have to pay for this!!!! Or your landlord might ask you to pay the plumber & give them the receipt with this deducted from the rent check, which is also fine.
Kelly, if you look as you do in the picture, and wash your hair in the sink, then it is a good bet that there's quite a wad of it in the drain. If you have a drain that has one of the pull up push down buttons near the back of the spigot, that drain plug that drops down into the hole will also catch and hold hair, eventually making a large clump to plug the drain. There is a new, small, snake type of drain cleaner available for less than $2 at most all the home improvement stores and probably hardware and large grocery stores. It's flexible plastic, with small thorn-like protrusions all along the outside of the unit and a round hole, for your finger to grab through at the top. The idea is to push the snake down into the drain as far as you can get it, then turn it around a few times and pull it out. If there's anything there, it will wrap itself around the snake and come out when you remove it. You may want to do this a few times if you get much on the first try, if you decide to buy one of the units. Some of the other answers were correct in saying that your landlord is responsible to keep the plumbing functioning properly, unless you have some sort of clause in your lease in which you've agreed to take care of it. And that's fine, if you have a very nice landlord, who gets right on these things. If not, however, it can sometimes be a long interval between when you alert him to a problem and when it actually gets fixed. The P trap under the sink may be partially or nearly all clogged with the hair and whatever else may have fallen down there over time, so you'll need to decide which way you want to go. For the $2 or less, it might be worth it to just try to make it better while you wait for professional help.