There are 2 shut off valves. 1 is close to the cold water line heading up towards your hot and cold kitchen area faucet. It's at stake feeding the RO system. The 2nd just one is located in addition to the metal tank. Will not Allow anybody know regarding your https://pittsburgh.newsnetmedia.com/story/52859087/advanced-water-rebrands-to-keep-up-with-changing-office-culture-and-cleaner-hydration-needs