Check out these Water Purification images:
Horyu-ji: Purification Fountain
Image by jpellgen
Another fountain (chozuya) on the grounds of Horyu-ji. This one is located outside of the Sai-in as you exit from the right. There is a pond located near here, which you can see in the background. If the water from the pond was used for the mitarashi, it would be considered mitarashi-gawa I suppose. I don’t think there is such a thing as mitarashi-ike.
Horyu-ji, located just outside of Nara City, was established by Shotoku Taishi in 607. The original was destroyed, but reconstructed and repaired several times since then. It is still, however, one of the oldest wooden structures in the world. Originally, it was dedicated to Yakushi Nyorai (healing Buddha). It was also the grounds of what was once Prince Shotoku’s palace. Excavations have uncovered artifacts and ruins of the original palace and temple.
Image by AlphaTangoBravo / Adam Baker
I used my Steripen to filter water. Not sure if it helped or not, as the streams were running clear, but I felt great the entire trip.
Technical Note: You can see both of my hands in this shot, so how did I hold the camera???
Hiyoshi Taisha: Dragon Fountain
Image by jpellgen
A small chozu-ya (purification basin) with a row of hishaku (ladles) just in front of the Ro-mon.
Hiyoshi Taisha is dedicated to Sanno Gongen, the deity of Mount Hiei, and dates back to 806. The shrine is located at the base of the mountain in Sakamoto near the shores of Lake Biwa. Because of its proximity to Hieizan, it has always been associated with Enryaku-ji. The shrine was destroyed in 1571 when Nobunaga eliminated the Enryaku-ji monks, but it was rebuilt soon after.
Hiyoshi Taisha. Otsu, Shiga.