http://surnames.behindthename.com/bb/sur/4312244
Result of a simple Google search:
http://lastnames.myheritage.nl/last-name/Sprengel
The meaning of the name Sprengel:
1. habitational name from a place so called, north of Soltau.
2. hence a nickname for a lively, athletic person, from Middle Low German sprengel ‘grasshopper’.
3. from Middle High German sprengel ‘aspergill’, ‘sprinkler for holy water’; of uncertain application.
Dictionary of American Family Names, Oxford University Press, Mar 2003