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Old 08-10-2012, 12:15 AM   #1
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Sanitizing the system

Insuring clean, safe drinking water in your motorhome, fifth wheel or travel trailer requires sanitizing your fresh water system. For a new or new-to-you RV you will want to sanitize before your first use of the system. You may also want to sanitize the system if your RV has not been used for some time, for example if it has been stored for the winter.

The generally accepted method of sanitizing your RV's fresh water system as outlined below involves filling the fresh water tank with a solution of household bleach and running the solution through each faucet. Then letting it stand for at least three hours. Finally, flush the system once or twice to remove the taste and smell.

This procedure is one you'll find in most any book about RVing it tried and true but be sure to read on to find out what I do.

Start with a nearly full fresh water tank.

Turn the water heater off and let the water cool.

Dilute 1/4 cup of household bleach for each 15 gallons of tank capacity in to a gallon of water.

Add the chlorine/water solution to the water tank. (Never pour straight bleach into the RV fresh water tank.)

One faucet at a time, let the chlorinated water run through them for one or two minutes. You should be able to smell the chlorine. (Make sure you are using the water pump and not an external water supply.)

Top off the RV fresh water tank and let stand for at least three hours over night is better.

Completely drain the system by flushing the faucets for several minutes each. Open the fresh water tank drain valve to speed up emptying the tank and Open the hot water tank drain plug and drain until it is empty.

Close all valves and faucets and drain plugs.

Fill water tank with fresh water.

Flush each faucet for several minutes each repeating until the tank is again empty. (Make sure you are using the water pump and not an external water supply.)

Fill the tank again. The water should now be safe to drink but if the chlorine odor is too strong you can repeat the fresh water flush.

Your RV fresh water system should now be safe for use.
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Old 09-09-2012, 05:52 PM   #2
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Re: Sanitizing the system

Good info, but what I've been asking is the location of the fresh water tank drain valve for a 262RB Denali (2011)?!
Thnx
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Old 09-10-2012, 10:47 AM   #3
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Re: Sanitizing the system

Find the fresh water tank.

The drain will be at the bottom, or lower-side of the tank.

Also, some drains are tied into the suction line(outlet) leading to the water pump(connected to the bottom or lower-side of the tank) with a "TEE" fitting. If you don't find a drain, install a "TEE" fitting in the suction line(outlet) to the pump.

Below is a typical fresh water tank.


Below is one type of fresh water tank drain fitting.
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