1999 Honda Civic power steering leakage

I refill my power steering fluid every other day. I check to see where the fluid is leaking from but couldnt find one. Its leaking on the driver side. It leaks when I am driving and not. When there is no fulid in the power steering tank, when I turn it makes a grinding noise. I am thinking its the power steering belt. It stop grinding whenever I refill the tank. I dont know where to check or what to do next and it continues to leak and I go throught at least 2 32 oz of powersterring each week.