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.
Vans Warped Tour Jun 29, 2019 Atlantic City, New Jersey, United States Uploaded by Bridjett Forrester
Vans Warped Tour 25 Year Anniversary Jun 29 - 30, 2019 Atlantic City, New Jersey, United States Uploaded by Cardi
Vans Warped Tour 25 Year Anniversary Jun 29 - 30, 2019 Atlantic City, New Jersey, United States Uploaded by Vderwin