I guess I'm a little old school and I read the manual that came with the rig. Here's instructions from my RV Thor Manual:
From Page 56
SANITIZING THE FRESH WATER SYSTEM
Sanitize the system before initial use, after extended periods of nonuse, at least once a year during continuous use,
and whenever there is suspicion that the system has been contaminated.
To sanitize the system, use the following procedure:
1. Prepare a chlorine solution using a gallon of water and ¼ cup of liquid household bleach (5% sodium
hypochlorinate solution). Use one gallon of solution for each 15 gallons of tank capacity.
2. With tank empty, and all faucets and drains closed, pour the solution into fresh water tank.
3. Complete filling the tank with fresh water.
4. Switch on the water pump. Open all faucets one at a time until all air is purged, and the water flows freely.
5. Again add fresh water to the tank until the water level reaches the fill spout.
6. Allow the system to stand undisturbed for a few hours (at least three).
7. Drain the system by opening all faucets, and the fresh water tank drain valve, while flushing the system with water
of drinking quality.
8. Continue flushing the system, allowing the water to flow for several minutes.
9. Close the tank drain valve and faucets. Refill the system with water of known drinking quality.
NOTE: A slight chlorine taste may linger. If this is objectionable, mix a solution of 1 quart Vinegar to 5 gallons of water
and add to the tank. Let stand for 3 hours and flush.
56
I followed this to a tee and no lingering odor nor taste. Seems they might be onto something?
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