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Old 05-27-2015, 10:51 AM   #11
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Location: Louisville, KY
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Most states the highway patrol will stop you if they see something "leaking"
from your rig. It's against the law to "dump" anything on the highway even potable water. I do also drain mine but it's done by the time I get out of
the camp ground.
Also added a 1/4 turn valve as others have mentioned. When I pull the
wheel chocks on that side, I open the valve...

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Old 05-27-2015, 11:36 AM   #12
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We have only filled our tank a few times over the past year. When we were finished with our trip, we open the valve and let it drain. We do sanitize the tank and water lines at least once per year.


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Old 05-27-2015, 11:38 AM   #13
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I don't recommend dumping it as you roll down the highway. You could get stopped. Just open it at your compsite. We keep about 5 gallons in it while travelling for the toilet. A couple times a year, since we're full timers, we add a couple cups of bleach to control mold and mildew.
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Old 05-27-2015, 11:57 AM   #14
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Do not drain the FW tank when you're travelling down the road or at the dump station. If we are camping within a couple hours of home I drain it before leaving the campsite. I try to time it so we don't have too much water in the tank the last morning so as not to waste too much. If you need the water for bathroom stops along the way, drain it when you get home or back to your storage lot.
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Old 05-27-2015, 12:18 PM   #15
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I would drain it right at the camp spot. I've never heard of an issue with fresh water. Some states/campgrounds have regulations on gray tanks. Also, would hate to forget to dump it and it becomes unclean/smells.
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Old 05-27-2015, 12:27 PM   #16
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We pump all but a few gallons into the grey and black tanks before leaving to aid in dumping. Only takes a couple of minutes and a couple of full flushes will help stir things up. After dumping pull ahead and pump the remaining in the black tank and add chemicals. This does two things, gets the tank ready for the next trip and the drive will slosh the treated water around cleaning the tank.
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Old 05-27-2015, 12:30 PM   #17
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Pull the plug & let it rip - at the campsite, if the drainage is good. On the way home if the drainage is not good (don't want to leave a muddy mess for the next guy). We empty the fresh water at the end of each trip.
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Old 05-27-2015, 12:30 PM   #18
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Originally our drain had a plug that needed a wrench to remove. I changed it for a valve that was much easier to open. If I know the next place I am going to has water I just open it and let the water drain out as we travel.
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Old 05-27-2015, 12:37 PM   #19
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Originally Posted by KyDan View Post
.... It's against the law to "dump" anything on the highway even potable water....
Is that true in all states/provinces/parishes?
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Old 05-27-2015, 02:55 PM   #20
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We always run with 1/2 tank as we have too often arrived at a campground and they were doing repairs, city shut off water, maintenance flushes, etc. and no water was available or it was not potable. We have checked with the experts and they stated that 1/2 tank does not significantly affect the mpg.

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