Outside the village, three watermills operated that ground wheat. From agreements of 1828 it appears that watermills were operating in Kastanitsa since then. Today, the ruins of the last watermill that operated until approximately 1970 are preserved.
For the operation of the mills, the following were needed: The Cistern: A space where the necessary driving force, i.e. water, is concentrated. The Vageni: From the outlet of the cistern at the bottom, a wooden aqueduct, the "Vageni", started, which was approximately 20 meters long and consisted of sections of 5 meters, four centimeters thick and 8 centimeters wide, which were tied together peripherally with iron hoops by 2 large millstones. The feathered one: A wooden disc with a diameter of 1 meter and a thickness of 20 cm. On the circumference at equal distances there were holes in which the "wings" were wedged. As the water flowed through the Vageni, it developed a force called downward force, which depended on the amount of water and the slope of its course. Thus, with the fall of water on the impeller and with its many and rapid turns, it sets the upper millstone in circular motion, while the lower one is fixed, with the result that due to the friction of the wheat, which fell in the center of the upper millstone, the flour leaves to the sides.
