Fresh water tank getting fresh water?
When traveling cross country, I only carry about 1/3 tank of fresh water to keep the additional weight off my rig. So, when we pull into a campground and hook up the fresh water supply, I avoid the "...
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As stated above, correct! When hooked up to city water you are not pulling anything from the on-board fresh water tank.
We travel similar to you, with very little water in our tanks. When doing a stop for overnight (we always stay in a park, never boondock), I pump my water from the fresh water tank. For quick overnight, I'll fill the water tank at the campground when we first get there. I quit using city water hook-up a long time ago, because of leaking hoses and unknown water pressure. The water pump on-board will not exceed the pressure capacity of the plumbing, but you never know what to expect when attached to city. And I simply do not trust pressure valves and don't want to spend a bunch on one either.
So in the morning, whatever remains in the water tank, I go ahead and drain it, leaving just a few gallons for traveling if we need to flush the potty. We do sometimes drain it completely and carry a 6 gallon jug with water we use for flushing.
When parked at our destination, I fill the fresh water tank also, and only drain it down when leaving.
This keeps the water in the tank fresh. I've never had anything growing in my tank, hope I never do, and even if you drain the tank, there's still moisture in there. But when traveling, I want my tanks as empty as possible. I've heard too many stories about tank failure (falling off) on the road. Nope! I'm not taking that chance.
We travel similar to you, with very little water in our tanks. When doing a stop for overnight (we always stay in a park, never boondock), I pump my water from the fresh water tank. For quick overnight, I'll fill the water tank at the campground when we first get there. I quit using city water hook-up a long time ago, because of leaking hoses and unknown water pressure. The water pump on-board will not exceed the pressure capacity of the plumbing, but you never know what to expect when attached to city. And I simply do not trust pressure valves and don't want to spend a bunch on one either.
So in the morning, whatever remains in the water tank, I go ahead and drain it, leaving just a few gallons for traveling if we need to flush the potty. We do sometimes drain it completely and carry a 6 gallon jug with water we use for flushing.
When parked at our destination, I fill the fresh water tank also, and only drain it down when leaving.
This keeps the water in the tank fresh. I've never had anything growing in my tank, hope I never do, and even if you drain the tank, there's still moisture in there. But when traveling, I want my tanks as empty as possible. I've heard too many stories about tank failure (falling off) on the road. Nope! I'm not taking that chance.
