Abstract
This paper is one of works in which I intend to clarify the castle town's planning methods of Japan. The summary in this paper is as follows: The water works in castle towns were recognized as an important town facilities. The water works conducted in the non-covered ducts were constructed and served in the the end of sixteenth century both as livings only in the zone of the Samurai-class and defence lines of castle towns. This tendency of the precedence for the zone of the Samurai-class were succeeded in after ages. However water works by open grooves were extended to the zone of the artisans tradesmen in the seventeenth century. The simultaneous constraction in both zone depends on each reason such as a compeled moving of their zone to the place where people could get only bad quality water, the appearance of influential towns men and etc.
