The verse does not say, "and the water was turned into non-alcoholic wine". It actually says quite the opposite. In ancient times, getting good wine was much harder than it is now and ancient parties would last several days. The hosts could not afford to have good wine the entire time so they would serve the best first so people would get drunk quickly and later serve cheap wine so that the drunk people would not notice. The verse says it was the best wine the host had tasted so it was actually a HIGHER alcohol content than the original wine.