Chōzu-ya at Make-jinjaA sign (read right-to-left) explains how to do chōzuInside a Chozuya
Chōzu-ya or temizu-ya (手水舎) are purification buildings in Shinto shrines. They provide water for a purification ceremony called temizu or chōzu (手水; lit.'hand-water'). They contain a water filled object called chōzubachi (手水鉢; lit.'hand water basin').
The water sometimes comes from wells and sometimes from tap water.
↑K Yokoi, R Nawata, S Furui, T Nagasawa, S Yanase, M Kimura, Y Itokawa (December 1991). 神社の手水の水質検査成績[A Report on the Hygienic Status of Sacred "Temizu" Water in Shrines]. Nihon Eiseigaku Zasshi (in Japanese). 46 (5): 1009–13. doi:10.1265/jjh.46.1009. PMID1779475.{{cite journal}}: CS1 maint: multiple names: authors list (link)
Further reading
"chouzubachi" 手水鉢. Japanese Architecture and Art Net Users System. Atsumi International Scholarship Foundation. Retrieved 15 August 2016., and links therein