Waterpik is the pioneer of engineering.  We know that water is limited, and we need to save our very best.  With the current regulations we have to go from 2.0 gpm to 1.8 gpm.  This new unit was amazing and it has the same force as my old ones.  The installation took less than 5 minutes, and they look great.  I love the the 3 in 1 feature, and helps a lot to spray the whole body.