The most waterballoons burst with a single arrow is 33 and was achieved by Luigi Di Michele (Italy) on the set of a CCTV Guinness World Records Special, in Beijing, China, on 6 December 2012.
http://youtu.be/y2ucS6NorPE
Water balloons vs arrow
By rokur
rokur
Production engineer and certified swim coach. Full-time IT consultant, spare-time swimming aficionado. 2 sons, 2 daughters and a wife. President of the Faroe Islands Aquatics Federation. Likes to run :-)