According the [untranslated in English] research of a Greek fellow Athenagoras Eleutheriou, many Hebrew words that including SL, SLM and names such as
Saul,
Salomon, Selem, Siloam and even the Greek Salamis refer to water, and particularly to water that springs forth from rocky terrain. He claims that Jerusalem has the same origin, and quotes Strabo as describing Jerusalem as a town with many springs that is surrounded by rocky and arid terrain.
I wonder if this theory "holds water"?