They DO NOT save water. I have had this shower head in my last 4 RVs. Why do they not save water? Because they provide such an enjoyable massage type shower experience that I just double my time in the shower.
I love the Oxygenics shower. Just took a shower the last 4 mornings with my Oxygenics while I am working at my remote office in Nebraska.
I called the manufacturer about the drip when I installed my first one. They replied the drip prevents that super hot or super cold return to spray after using the shutoff.