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Old 09-30-2012, 04:29 PM   #1
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2007 30' Classic S/O
Ann Arbor , Michigan
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Where do I add bleach to the fresh water system?

Recently purchased a 2007 Classic and this will be our first time disinfecting. Can someone please share with us where/how you add the bleach. We really appreciate all the information that we're learning from your sharing. No experience camping, but always wanted to try it so here we are....

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Old 09-30-2012, 04:52 PM   #2
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I pour some into the fresh water tank external fill opening, as if you were filling the fresh water tank with your garden hose.

I forget the amount you use, but it's not much. I believe it was something like one teaspoon per gallon to make water drinkable. I tend to go with a heavier concentration than that though....probably put about 8 ounces in with 60 gallons of fresh water. I'll put maybe 15 gallons in the fresh tank, add the bleach, then fill the tank up. Go for a drive to mix it all up nicely, then let it sit awhile to kill whatever's in the fresh tank.

After a couple days, I'll run the water pump to run it through all the lines. I'll do that a lot; maybe like run 30 gallons through. Then I drain everything, the fresh and the gray/black tanks. Get it empty, then I'll fill it up again completely, run some of that through the lines until it quits smelling like bleach, then drain whatever else is in the fresh tank.

You might have to refill and drain the fresh tank a couple of times to get the bleach smell out.

I may be using way more bleach than is required, but doing it this way I have never gotten sick from drinking the water out of my fresh tank.

Many folks just drink bottled water and never drink the water from their fresh tank. We typically start out with those intentions but after a couple days I end up brushing my teeth with tank water. So anyway, I want to kill whatever bacteria is in there. So I do the above and it's worked well for me. Plus my hair hasn't looked like Billy Idol's so I'm thinking I've gotten most of it out of the lines

- Jim
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Old 09-30-2012, 04:57 PM   #3
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We assume that you are disinfecting the fresh water tank. On the outside on the driver's side of the AS you will find the water fill inlet. It needs a key to open it up. Once open, you can pour the bleach in. Then fill with water. Open the taps and let them run for a few moments. Don't forget the water sprayer in the bathroom and the shower hoses. (you may have an exterior water sprayer...don't know about 2007s). After you have let them run, shut off and go out and dump the fresh water tank. Refill with clean water and redrain. You may not have to do the second one if the water that is coming out looks pretty. When we do our tanks first thing in the spring we try to fill with half a tank plus the bleach and then drive the trailer around a few blocks to slosh it around...then drain and refill. It isn't rocket science. You will figure it out.
Why don't you plan on coming to a rally with some of us. The Ohio group has a rally at Findley SP coming up later in Oct. That is not too far away from you. It is going to be a good time! The rally is listed on the calendar on the forums. 2nd Anniversary/Chili Cook-off Rally.
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Old 09-30-2012, 05:46 PM   #4
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Please Dilute the Bleach First

Decide how much bleach is recommend for the capacity of your fresh-water holding tank. (It's in your owner's manual, or at least it is mine)
Put that much in a 5-7 gal water jug with a pour spout.
Fill the container with water.
Pour the diluted bleach into the holding tank via the aforementioned fresh-waster, holding tank inlet.
Then, fill the tank the rest of the way with a white, fresh-water supply hose.
Do not use your garden hose.
Otherwise, follow loudruff's instructions.
Ken L
1966 Tradewind 24
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Old 09-30-2012, 06:06 PM   #5
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Prescott , Arizona
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Potable water systems require periodic maintenance to deliver a consistent flow of fresh water. Depending
on use and the environment the system is subject to, sanitizing is recommended prior to storing and before
using the water system after a period of storage. Systems with new components, or ones that have been
subjected to contamination, should also be disinfected as follows:
1. Use one of the following methods to determine the amount of common household bleach needed to
sanitize the tank.
A) Multiply "gallons of tank capacity" by 0.13; the result is the ounces of bleach needed to
sanitize the tank.
B) Multiply "Liters of tank capacity" by 1.0; the result is the milliliters of bleach needed to
sanitize the tank.
2. Mix into solution the proper amount of bleach within a container of water.
3. Pour the solution (water/bleach) into the tank and fill the tank with potable water.
4. Open all faucets (Hot & Cold) allowing the water to run until the distinct odor of chlorine is detected.
5. The standard solution must have four (4) hours of contact time to disinfect completely. If you double the
solution, this concentration allows for contact time of one (1) hour.
6. When the contact time is completed, drain the tank. Refill with potable water and purge the plumbing of
all sanitizing solution.
The sanitizing procedure outlined above is in conformance with the approved procedures of RVIA

ANSI Al19.2 and the U.S. Public Health Service.

There should be a small door that uses a key to open that has the water fill.
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Old 09-30-2012, 06:29 PM   #6
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Grand Junction , Colorado
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I follow the Owner's Manual with some changes. I use a fresh water (white) hose and fill the tank part way and then add the one-hour amount of Clorox. Then I fill the rest of the tank, run water through all the faucets. After an hour, I drain the system. Look for a drain next to the water heater (that's in the FB's, it may or may not exist in other trailers). I run the pump to quicken the draining. After the system is drained, I fill it again, run water through all the faucets, drain again. I fill the system 3 times before all the Clorox solution smell is gone, then one more fill (full or partially full) for a trip.

Chlorine is bad for plastic—makes it brittle. It is best to limit exposure to one hour (or 4 hours if you are using the 4 hour mix).

I don't run the solution through the filter under the sink as I don't think chlorine and an activated carbon filter would agree.

The whole process takes about 2 1/2 hours. We do it twice a year—once in the spring and once during summer. In the spring I also run the solution through the outside shower even though we have never used it. When I winterize, I run antifreeze through that and the kitchen sprayer and toilet line.

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Old 10-01-2012, 06:02 PM   #7
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2007 30' Classic S/O
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Okay, we found the inlet on the curb side of our Classic where we can add the bleach under a locked cover. We should be ready now to disinfect. Thanks for all the replies.
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Old 10-01-2012, 08:49 PM   #8
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As I mentioned in an earlier thread You can sanitize your white hose at the same time. Hook your hose to the trailer then pour the required amount of chlor in the other end of the hose just before hooking up to the faucet. I have found it easier to pour into the end of the hose than into the trailer.
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Old 10-01-2012, 09:33 PM   #9
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Old 05-12-2013, 06:13 AM   #10
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Ok, i a, set for today's project...question when u use ur pump to help get water thru the system and for flushing...doesn't it land in the grey tank? Where do you empty the grey tank several times when you are home with the bleach water?
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Old 05-12-2013, 07:04 AM   #11
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You should be using a diluted solution of bleach ( perhaps 1/4c per gallon of water). After giving it some time to disinfect or taking a drive around the block a few times it is no problem to drain it on the ground. If possible it might be good to NOT drain it on your grass but onto gravel, pavement or other hard surface it will be no problem.
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Old 05-12-2013, 08:13 AM   #12
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Hi should have a factory manual which will help with "getting to know" your AS.....ours has specific instructions for sanitizing the holding is another reference..RV Doctor Newsletter: Issue 18 | RV Travel
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Old 05-12-2013, 08:16 AM   #13
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This is even more specific...The RV Doctor: Chlorinating the Fresh Water System
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Old 05-12-2013, 09:11 AM   #14
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You can drain the bleach solution on the ground, but flood the area with a hose as you're doing it. That dilutes the bleach enough it won't burn the grass. I always follow my bleach routine with a flush of baking soda in the system. For a 50 gal. tank, I use a 4 lb box of baking soda mixed into a full tank of water and run through all the water system. It kills the bleach taste in the water. Let it sit for at least 3 days, then drain and fill again, flush, drain and you're done. Mix the baking soda with water as you dump it in. My oldest son uses white vinegar as his rinse. It needs several gallons for a fresh water tank. He swears by it, but I prefer baking soda....


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