Bommerholz Water Tower, Water tower and architectural heritage monument in Witten, Germany

The Bommerholz Water Tower is a 26.4-metre-high tower in Witten-Bommerholz, built in 1910 to a design by the Simons company of Essen-Steele and executed by Carl Brandt of Düsseldorf. Its original steel water tank held 150 m³; a 1977/78 conversion by the Witten municipal utility doubled capacity to two tanks of 150 m³ and removed the viewing platform that once encircled the tank.

The tower was built in 1910 after local wells dried up due to mining at the nearby Zeche Bommerbank and a water supply contract with the Gewerkschaft Mont Cenis ended on 1 January 1910. It was designed by the waterworks specialist firm Simons of Essen-Steele and built by Carl Brandt of Düsseldorf. In 1977/78 the Stadtwerke Witten enlarged the capacity to two times 150 m³, removing the viewing platform around the tank. It was listed as a monument on 21 October 1986.

The tower is listed on two routes of the Route der Industriekultur: route 12, "Geschichte und Gegenwart der Ruhr", and route 28, "Wasser: Werke, Türme und Turbinen". Since 16 December 1997 it has been lit at night by three 400-watt lamps, on the initiative of the Bommeraner Heimat- und Geschichtsverein and its chairman Wolfgang Kreischer.

The tower is located in the Bommerholz district and can be reached via Turmstraße. Visitors should note that it is a protected monument, so viewing is from the outside.

The tower was first floodlit on 16 December 1997 with three 400-watt lamps, on the initiative of the Bommeraner Heimat- und Geschichtsverein and its chairman Wolfgang Kreischer. A windmill had stood on the site before the tower was built in 1910.