How to Clean Drinking Water Holding Tanks

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Things You'll Need

  • Bleach

  • Fresh water

  • Gallon jug

  • 1 lb. baking soda


Clean your water tank after each winter.

Fresh Drinking Water

Drinking water tanks are commonly found in RVs, trailers, campers and boats. People are also purchasing portable drinking water tanks for in home use in the event of a loss of fresh drinking water. Proper maintenance of your drinking water holding tank will ensure that your drinking water is clean and safe to drink. It is easy to clean and flush your drinking water tank once every year with these simple steps.

Step 1

Drain your drinking water tank.

Step 2

Prepare a bleach solution to put into your clean water tank. The solution needs to be based on a ratio of 1/4 cup of bleach for every 10 gallons of water your will be using to clean your tank.

Step 3

Fill your tank halfway up with fresh water. If you have a forty gallon tank you will want to fill it up with twenty gallons of water. You will then want to take 1/2 cup of bleach and funnel it into a gallon jug of water. Cap and shake. Funnel this solution into your clean water tank.

Step 4

Agitate the tank so that the bleach solution is properly spread throughout the tank. If you drive an RV this can easily be done by driving your RV around the block. Let this solution rest in your water tank for four hours.

Step 5

Begin to drain your tank by opening up the hot and cold water faucets. Let them run until the tank is completely drained.

Step 6

Fill the tank up completely with fresh water. Drain through the hot and cold water faucet until empty. This will flush out any excess bleach that may linger in the tank.

Step 7

Mix together 1 lb. of baking soda in a gallon of hot water. Cap and shake. Pour this solution into your tank then top off your tank with fresh water.

Step 8

Drain your tank one more time. Refill it with fresh water to drink.

Step 9

Fill with clean drinking water. Repeat every six months.

Robin Neorr

Robin Neorr has been working as a full-time freelance writer since 2007. She has written for various websites including The Frisky. Before she started her writing career, she spent 10 years in media marketing. She has a bachelor's degree in communications and a master's degree in communications management from John Carroll University.