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.
Persistence Tour 2020 Jan 25, 2020 Oberhausen, North Rhine-Westphalia, Germany Uploaded by Jay O. Tea
H2O / Lagwagon / Face To Face Oct 18, 2019 Fort Lauderdale, Florida, United States Uploaded by Cdarby6
Face To Face
H2O / Lagwagon / Face To Face Oct 18, 2019 Fort Lauderdale, Florida, United States Uploaded by Otis T Wren