History & Engineering How old is the oldest water tower? March 11, 2026 by Tanp | Leave a Comment The oldest known water tower, the Humpback Water Tower in the United States, was built in 1887 in Walla Walla, Washington. This historic structure, originally part of the city’s early water system, stands as a testament to pioneering engineering and community development. Uncovering the History of the Oldest Water Tower Water towers are more than […] Read more ยป