There are at least 10 groups with the name H2O (including H₂O):
These are photos from concerts where H2O played, so they may be of other bands that played the concert as well.
New Found Glory / H2O / RX Bandits / The Starting Line Nov 12, 2001 Portland, Oregon, United States Uploaded by Chris V.
New Found Glory / H2O Oct 28, 2001 New York, New York, United States Uploaded by Laura Fazekas
Warped Tour '01 Aug 12, 2001 Pontiac, Michigan, United States Uploaded by Daniel Sylvester
Vans Warped Tour Aug 11, 2001 Toronto, Ontario, Canada Uploaded by Troy Roberts
Warped Tour 2001 Jul 25, 2001 Atlanta, Georgia, United States Uploaded by Josh5180
Vans Warped Tour Jul 17, 2001 Sparta, KY Uploaded by Werewolf Of Louisville
Vans Warped Tour 2001 Jul 17, 2001 Sparta, Kentucky, United States Uploaded by J Phillips
311 / AFI / Alien Ant Farm / Rancid / Good Charlotte Jul 15, 2001 Tinley Park, Illinois, United States Uploaded by Jeepgurlio
"Vans Warped Tour" / Less Than Jake / Pennywise / Rancid / H2O Jul 12, 2001 Noblesville, Indiana, United States Uploaded by Nick L
Vans Warped Tour 2001 Jul 8, 2001 Brighton, Colorado, United States Uploaded by Jeepgurlio
Vans Warped Tour 2001 Jun 30, 2001 San Francisco, California, United States Uploaded by Wighat
Vans Warped Tour Jun 27, 2001 Chula Vista, California, United States Uploaded by Malk
H2O / The Explosion / Snapcase / Face To Face Feb 21, 2001 Lawrence, Kansas, United States Uploaded by Murphy59