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Old 04-19-2016, 07:16 PM   #1
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Draining Fresh Water Tank

We are new to RVg, and are living full time in our HR Ambassador. The fresh water tank is full, but we are on city water - and will be for a couple of months. I assume I need to drain that tank and refill with fresh water periodically. How often? Is it a bad idea to keep it filled/empty?
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Old 04-19-2016, 07:21 PM   #2
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I keep mine full while we are not using it. Then will drain and refill before heading out. It could sit 3-4 weeks at a time.
Keeping tanks full is twofold one for emergencies, the other is I think a full tank will be less likely to go let stuff start growing in there.


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Old 04-19-2016, 07:23 PM   #3
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I agree and do the same as above post.
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Old 04-19-2016, 07:28 PM   #4
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Our rig has been sitting since Sept with the tank half full. If we get to go out this year at all (DW has health problems) I'll drain it, refill and use bleach to disinfect the system, drain it, flush the lines and drain again. Then fill and use it.
For sitting just a few weeks I wouldn't bother draining the tank unless I got bad tasting water someplace.
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Old 04-19-2016, 09:34 PM   #5
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Cycle the Water in the Potable

Folks,

My method is to shift to my Water Pump and Onboard Potable Water Tanks about every 2 weeks and go from Full down to about 1/3. Then refill.

This allows me to operate my water pump periodically and keep recent water in my tanks.

No need to drain unless going into long-term storage.

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Old 04-19-2016, 10:00 PM   #6
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Folks,

My method is to shift to my Water Pump and Onboard Potable Water Tanks about every 2 weeks and go from Full down to about 1/3. Then refill.

This allows me to operate my water pump periodically and keep recent water in my tanks.

No need to drain unless going into long-term storage.

JohnnyB
Someone remarked they keep water in theirs so nothing grows in it. If a tank is clean and dry what is going to grow in it?
I do flush my tank when I feel it is a good idea. I live in the country on a well system but my shop is in the city with chlorinated water. I take it to my shop on occasion and fill it, drive home and drain it out behind my home. I even use some of the water to water my wife's flower garden if it needs it. I leave the drain open so the tank gets completely dry.
Unless I think I am going to need the tank I leave it empty. If I'm not sure I will have access to water where I'm going I will go to work in the MH and fill it there. I own the shop and pay the bills.
I don't like stale water. I also don't drink water from the storage tank. I only drink bottled water or beer. I don't go through many bottles of water.
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Old 04-20-2016, 09:11 AM   #7
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I don't think the tank is dry when you empty it. So, when we are not using the tank, I put about 3 oz. of bleach in the 82 gal. tank. I'm not trying to sanitize just keeping stuff from growing in there.
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Old 04-20-2016, 10:11 AM   #8
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Thanks a lot for the info. Also, maybe I'm missing something - but can't I drain the tank simply by running the water in the coach and draining it out through the gray tank? Shut the city water off, turn on the water pump, and let 'er rip? Since I'm in a park for a couple of months, just trying to decide how I would approriately drain all that water...
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Old 04-20-2016, 10:20 AM   #9
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You would not want to run the pump that long continuously.
Not sure where the tank drain is but maybe just add a hose then send it down the hookups. Or rig up a catch pan with a hose that goes down the hookups.
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Old 04-20-2016, 10:24 AM   #10
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I only drink bottled water or beer. I don't go through many bottles of water.
Lynn
Ok, now THAT's funny
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Old 04-20-2016, 10:30 AM   #11
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Thanks a lot for the info. Also, maybe I'm missing something - but can't I drain the tank simply by running the water in the coach and draining it out through the gray tank? Shut the city water off, turn on the water pump, and let 'er rip? Since I'm in a park for a couple of months, just trying to decide how I would approriately drain all that water...
TommyHarris
RV fresh water tanks can be drained by simply opening the tank drain valve.
(No need to run the water pump).
Mel
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Old 04-20-2016, 10:37 AM   #12
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I live in the country. If I don't want a puddle where the MH sits, I take it for a ride down the road with the tank valve open.

It is difficult for me to get too concerned about my holding tank water. I drink well water. I am not sure how long that stuff has been sitting down in that hole in the ground.

I also sanitize my MH water system once per year in the spring.
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Old 04-20-2016, 10:41 AM   #13
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I understand how to drain it - just not sure the park would appreciate 40 gallons of water on the ground...
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Old 04-20-2016, 10:45 AM   #14
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JMHO: Not all RV park water is equal in quality, the park where I spend my winters; the water is considered potable; but if you could see how quickly it starts plugging up my whole house water filter, you wouldn't want to drink it or put it in your fresh tank. I have a Culligan system in place during my stay , without it I'd go through a filter every two weeks.
I fill my fresh tank at home, before I head south , use the water when necessary , and usually have more than enough to get me back to the house 5 1/2 months later, where I drain, sanitize , and refill.
My point ; make sure any water that you put into your fresh tank is treated " city " water and not treated well water at the park.
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