Disinfecting fresh water tank

[shovelhead86]

Please help. I know I have seen, somewhere, the ratio of bleach to water to use on the fresh water tank. It has been empty for several months and I would like to freshen it up. Also my brothers unit has been empty for about 2 years and we would like to get that clean again.

[Gkerlin]

I use about a cup of beach for the 60 gal tank. Mix it with a gallon of water then pour that mixture down the fill, and fill the tank.

Run it thru the lines, let it all sit for 12hrs or so. Drain and refill. Run fresh thru all the lines.

Sometimes I might drain and refill 2x if I still have some chlorine smell in the lines.

[oldelmer1]

Copied from rvbasics.com:

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.

[shovelhead86]

Thanks for the quick response. I'm going out to do it right now. Thanks again

[1retired06]

X2 on Oldelmer1

[kylec2]

X3!