You report that Israeli Ambassador Michael Oren says that Palestinians are doing fine with water. This is a complete misrepresentation.
I just dug up this short video done as part of TVE’s Earth Report show, circa 2004. It shows Jeff Halper (of ICAHD) trying to prevent the IDF from destroying a farmer’s water reservoir. Obviously the crisis goes back further than 2004, but this is a good and modest demonstration of it, and is how I first learned of Halper.