Why does your lower back hurt where your kidneys are at?

Why does your lower back hurt where your kidneys are at? I drink plenty of water..They hurt just about every other day.

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If you are experiencing consistent pain, you need to see a doctor. Self diagnosis is a tricky and potentially fatal thing. It could be nothing more than strained muscles, or it could be a kidney infection or kidney stones. Without having proper tests done, it is almost impossible to tell.