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.
Ozzfest/Warped Tour 1998 Jul 18, 1998 Somerset, Wisconsin, United States Uploaded by Bruhvvmetal
The Van's Warped Tour '98 Jul 12, 1998 Boulder, Colorado, United States Uploaded by Tomcat0011
Vans Warped Tour 1998 Jul 12, 1998 Boulder, Colorado, United States Uploaded by Jeepgurlio
H2O Jun 5, 1998 Wil, Saint Gallen, Switzerland Uploaded by Daniel Fischer
H2O / Damnation A.D. / Vision / Farenheit 451 Apr 19, 1998 Washington, D.C., United States Uploaded by Michaela Morgan
Orange 9mm / H2O / Farenheit 451 / Man Will Surrender Dec 12, 1997 Detroit, Michigan, United States Uploaded by Daniel Sylvester
Vans Warped Tour 1997 Jul 23, 1997 Clarkston, Michigan, United States Uploaded by Daniel Sylvester
Vans Warped Tour 1997 Jul 22, 1997 Cleveland, Ohio, United States Uploaded by Jessica Anshutz
Sick of It All / Snapcase / Vision of Disorder / H2O / AFI / Ensign Apr 5, 1997 New York, New York, United States Uploaded by Liz Sets Fire
Murphy's Law / H2O Aug 5, 1996 Detroit, Michigan, United States Uploaded by Mark Culpepper
Sick of It All / Ignite / H2O / Vision of Disorder Nov 26, 1995 Syracuse, New York, United States Uploaded by Michaela Morgan
Sick of It All / H2O / CIV Jul 11, 1995 Glasgow, Scotland, United Kingdom Uploaded by Neil Lumsden
Shu / Comozoo / H2O Jun 25, 1995 Glens Falls, New York, United States Uploaded by Davmfoster
