Here is a billboard I saw about a year ago, while visiting Gapyeong (가평) (see post-15), near Chuncheon (춘천):
Koreans, being Koreans, began marketing "Pyeongchang Water" shortly after the announcement. My favorite bottled-water brand name remains "DMZ Water", though. (This is not to say I bought it; I actually bought whichever was cheapest, which for me was HomePlus water at 500 Won [45 U.S. cents] per 2-L bottle.)