Career
In 1870, Arnemann started a soda water factory in Neenah, Wisconsin and was also in the ice business. Arnemann served on the Neenah Common Council and was mayor of Neenah. Arnemann was a Democrat.
He served in the Wisconsin State Assembly in 1903 and from 1915 until his death in 1917.
He died unexpectedly of heart failure in Neenah, Wisconsin.
