How Much More Water Comes Out of a Waterfall Shower Head? -- Good Questions

Q: I just got a waterfall showerhead from my parents. I installed it immediately because it was so pretty, but when I took a shower this morning I felt really guilty wondering about how much more water I was using. How much more water comes out of a waterfall showerhead compared to a standard one? I have a water saver washer I can add to the shower head, but I want to know if I should just put the old head back on. Thanks! More