Its perfectly safe to drink the water from an RVs fresh water tank (weve been doing it for over 8 years) as long as you keep the tank clean. In this video, we show you how to sanitize your fresh water tank, which should be done about once every 6 months. Clean, safe, sanitary drinking water is a breeze when you take a few basic steps to manage the fresh water system on your motorhome, travel trailer of fifth wheel. Fresh, drinkable, potable H2O doesnt only come from bottled water, but right from your RVs tank. Well show you how to use bleach to kill any bacteria that may be present in your campers water system, and have all the safe drinking water you need. Be sure to confirm that all methods and materials used are compatible with your particular RV. RVgeeks offers basic DIY (do it yourself) RV service, repair and maintenance tips from full-time RVers who have been handling most of their own maintenance since hitting the road in 2003.