During the Japanese colonial era, in order to solve the problem of tap water in Taiwan, the Japanese authorities hired English engineer Barton as a consultant engineer for the Taiwan Governor's Office in 1896 to be responsible for the design and construction of the waterworks. The current "Shuangshun Tou Danshui Waterworks" is the first waterworks in Taiwan. The classically styled stone archway, with the words "Huwail Water Source" engraved on it, has been providing clear water for a century, and it still supplies water to the Danshui area. The current "Huwai Waterway" is a low-altitude natural groundwater source located at the foot of a hill on Shuiyuan Street in Danshui District. It enjoys the reputation of being Taiwan's first tap waterway. The historic site covers three parts: Shuangshun Tou water source, water valve room, and a fire hydrant on Sanmin Street. The water valve room and fire hydrant are small public buildings in the city, while the water source comes from deep in the volcanic rock of the Datuanshan mountain slope. The spring water is clear and sweet, and the environment is quiet and elegant. The guard room, gate entrance, brick pillars, and this century-old facility for protecting the water source have been listed as municipally protected historic sites.