Two Hydrogen ions, and 1 oxygen ion.
In Our Water was created in 1982.
Out of Water was created in 1989-01.
The Water Nymph was created in 1912.
Gutter Water was created in 2006.
From Fresh Water was created in 1984.
A Drop of Water was created in 1987.
Moonlight on Water was created in 1989.
Wessex Water was created in 1973.
Portsmouth Water was created in 1857.
Veolia Water was created in 1853.
The Shape of Water was created in 1994.
Lonely Water was created in 1973.