1 A well supplying drinking water. It may be deep or narrow, depending on the depth of the water table. The shaft is often lined with timber siding or stone, and the bottom paved with pebbles. In some areas, notably the Aizu 会津 area of Fukushima Prefecture, the term ido is applied to a stream used as a source of drinking water.

Shūentei 聚遠亭 (Hyōgo)
*kuruma-ido 車井戸
Nagatomi 永富 House (Hyōgo)


Nagatomi 永富 House (Hyōgo)
2 In parts of Shiga Prefecture, a large communal tub for drinking water. Several tubs were placed at convenient points in a village and fed with clean water through bamboo pipes. The tubs were about 1.5 m high and 4.5 m in circumference.
3 In the *Yoshino 吉野 area of Nara, a term for a tub used as a store for water and filled from a valley stream.