How do I remove the canisters and the tank under my sink that supply the reverse osmosis drinking water at the sink. The first time I tried this I got quite a surprise since that system is under pressure. Better still, how I remove this without getting soaked.

Locate water supply line that supplies water to R.O. system. It connects to the valve on the back wall inside your kitchen sink cabinet. Turn it OFF. Open Reverse Osmosis (R.O.) dispenser spout to release pressure. Wait few moments. Than disconnect supply line from the valve, disconnect line connected to R.O. water dispenser spout and remove all R.O. filters and storage tank out of the cabinet. Then, remove the R.O. dispenser spout that is attached to sink. Hopefully , you have single, dedicated valve for your R.O. System. If not, things will be more complicated. You may have to change a valve, cap off supply line or replace water supply line. Here, I would ask you to snap a photo of your under sink water connection and post it here, so I can see how it was connected. Back to you. Milo