The Defense Acquisition University Alumni Association (DAUAA) is an alumni organization for the Defense Acquisition University. It was founded in 2002 and is still very active today.
Fill your fresh water tank again with cold water and let the water sit in the tank for about 8 to 12 hours. After the allotted time, turn on all the faucets and water outlets in your RV again and let the water run until the smell of the bleach goes away.
So, here's a step-by-step guide to sanitizing your RV fresh water tank. 1  Turn off your water pump and open the valve of your fresh water tank. Drain your tank completely of all its stored water. 2  Mix one cup of bleach or tank cleaner with one gallon (4 1/2 liters) of water. Pour the solution in your now-empty fresh water tank using a funnel.