„Sable, below a three-rowed wall Argent in the chief, the lowest curved, a fountain azure, deciduous to both sides out of the base.“ The arms are canting and symbolise the name of the village. "-born" means fountain in german. The colours Argent and sable are derived from the Electorate of Cologne
Borntosten Geschichte
Eduard Belke, Alfred Bruns, Helmut Müller: Kommunale Wappen des Herzogtums Westfalen, Arnsberg 1986, S. 137 ISBN 3-87793-017-4 

(In dieser Quelle wird der Springbrunnen in Silber dargestellt.)
Unknown authorUnknown author - constructed and added by Jürgen Krause