Far vision: Testing each eye separately, candidates must have at least 20/30 or better in the best eye and 20/100 or better in the worse eye with or without corrective lenses; and with uncorrected visual acuity of 20/100 or better testing both eyes together. The visual fields must not be less than 140 degrees and color vision is also required. Candidates who fail the standard color vision tests will be given the Farnsworth-Munsell D-15 Test. Stereopsis will also be tested. Candidates will also have to pass a subsequent vision examination prior to academy appointment.
   Answer:   The tap water in Israel is perfectly safe. By law, each local  jurisdiction (towns, cities) filters, treats and purifies the water  before it enters the local system, just as is done in other  developed countries.
You CAN actually drink the tap water in most places and brush your teeth with this water. If the tap water is supplied by the local authorities it is safe. However bore water can be a problem and it is best not to drink that. Most of the stories told are by people who do not come here. Thirty years ago it was not a good idea to use the ice or drink tap water.