{Shikoku Hachijūhachikasho Meguri}

Water Basin At Entrance To Temple--

The temizuya, or chōzubachi, is found immediately inside the gate through which you enter the compound. The first thing you should do when you enter is stop here and purify yourself by rinsing off your hands and rinsing out your mouth.

As i say on another page on this site, instead of looking at this as an actual washing, think of it as more of a rinsing to remove the dust of the secular world. Don't wash your hands in the water; use a ladle to pour water over your hands outside of the water basin. Also, don't drink from the ladle; pour a little water into your now cleaned hands and sip from your palm, then spit the water out on the ground.

(Click to enlarge)