There are two shut off valves. A single is close to the chilly water line heading up for your hot and cold kitchen area faucet. It is actually on the line feeding the RO program. The 2nd 1 is found on top of the steel tank. We at Dexsport are http://business.bentoncourier.com/bentoncourier/markets/article/getnews-2025-6-17-advanced-water-rebrands-to-keep-up-with-changing-office-culture-and-cleaner-hydration-needs/