Seltri (Selters)
Seltzer, or just plain soda or carbonated water, named after the German town of Selters known for its mineral water. Calling a street which led directly to the then Härjapea river cum Tallinn waste-disposal duct is as misleading as Icelanders calling their neighbor Greenland. Also spelled Seltersi which was not to Estonian taste, even less so I imagine in its relatively unpronounceable full name of seltersivesi (soda water).