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Old 08-02-2016, 11:01 AM   #1
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Fresh water tank when "parked".

We frequently park at locations when volunteering or hosting for three or four months and are on city or site water during those times. I would like opinions on whether to empty or fill our 100 gallon fresh water tank during these periods or general tank maintenance. I have no problem sanitizing our system when we are ready to move on as I always like to travel with a full tank. Thanks in advance.
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Old 08-02-2016, 11:17 AM   #2
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We volunteered also for months. Are you using the city water connection or are you using the water from your tank? We always kept water in our tank even if connected to city water - just in case. We always traveled with water because we enjoyed boondocking in scenic places. In 16 years of full-timing we never sanitized the tank. I
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Old 08-02-2016, 11:21 AM   #3
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With city water there's enough chlorine in most systems so that all you'll need to do is fill the tank when ready to leave. As twogypsies say keep some water in your tank in case of city water main break etc.
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Old 08-02-2016, 11:29 AM   #4
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We are always on city water when parked. The fresh tank only gets used when we are on the move or at water limited camp sites.
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Old 08-02-2016, 01:08 PM   #5
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If we are staying a while I fill the tank with campground water, it's always chlorinated. But to travel I either use or dump most of it. I like to keep 30 - 40 gal. on board when driving, just in case.
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Old 08-02-2016, 01:21 PM   #6
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I always keep tank full and use it vs city water connection for several reasons.

Once (and that was more then enough) didn't have much water in tank and CG water system went down for over a week.


City water pressure fluctuates so you need a good regulator
(Pump discharge is constant)

Hard to notice if you might have a small leak when using city water
(Pump with 'burrruup' letting you know that system pressure dropped enough to turn pump on)

And I can easily turn pump off when we leave rig unattended.
Saves trip to spigot especially when I would forget to turn it back on
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Old 08-02-2016, 01:46 PM   #7
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Originally Posted by Old-Biscuit View Post
I always keep tank full and use it vs city water connection for several reasons.

Once (and that was more then enough) didn't have much water in tank and CG water system went down for over a week.


City water pressure fluctuates so you need a good regulator
(Pump discharge is constant)

Hard to notice if you might have a small leak when using city water
(Pump with 'burrruup' letting you know that system pressure dropped enough to turn pump on)

And I can easily turn pump off when we leave rig unattended.
Saves trip to spigot especially when I would forget to turn it back on
This pretty much sums us up as well. I would never have notice the failed pressure valve on my water heater if it weren't for the noise from the water pump. Using the pump (and leaving it off when not in use) ensures that if a leak develops it can't ruin my coach while I'm away.
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Old 08-02-2016, 03:12 PM   #8
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When hooked up to city water, I just use 1\2 to 3\4 of the tank and refill as needed. That way your changing the tank and it always contains fresh water if needed. However, I have been places that the city water is not fit to drink in which case leave the tank full, drink bottled.

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Old 08-02-2016, 03:25 PM   #9
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We do not travel with a full tank or even a partially full tank unless we will be boondocking. Why pay to haul 830+ lbs ?
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Old 08-02-2016, 05:35 PM   #10
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The chemicals used to make city water safe will gas off over time. Add in that your fresh water tank is not a closed system things may start to grow over time. How long, don't know but I'll drain and refill my tank after a month of no use. I usually only travel with 1/3 or so of the 50 gallon capacity.
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Old 08-02-2016, 06:50 PM   #11
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Originally Posted by SewFishy View Post
We frequently park at locations when volunteering or hosting for three or four months and are on city or site water during those times.

I would like opinions on whether to empty or fill our 100 gallon fresh water tank during these periods or general tank maintenance.

I have no problem sanitizing our system when we are ready to move on as I always like to travel with a full tank.
We've work camped the last 2 years for several months at a time. I usually keep my water tank empty, but after a water main break, I now keep it about half filled.

However, even though I have a great filtration system, I try to cycle the water tank at least once a month.

Yeah, I also sanitize with bleach at least once a year. I'm not it the I-don't-sanitize-because-it-hasn't-hurt-me-yet club.
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Old 08-02-2016, 11:01 PM   #12
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We do not travel with a full tank or even a partially full tank unless we will be boondocking. Why pay to haul 830+ lbs ?
That 830# will make NO difference in MPG.

Air resistance has a much bigger affect then weight does.
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Old 08-02-2016, 11:23 PM   #13
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[QUOTE=Old-Biscuit;3191335]That 830# will make NO difference in MPG. QUOTE]

Agreed.
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Old 08-03-2016, 07:29 PM   #14
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Fresh water tank when "parked".

Agree again...... You are hauling around 30 to 40 or more thousand pounds, an extra 800 is nothing.

Sorry, maybe I am wrong, I just looked at the profile....it looks like the RV is only 11 feet!!


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