Mysterious Freshwater

[iDrive55]

Greetings, I just finished a four day stay in a northern Texas campsite. As I was breaking camp, I noticed water leaking from the freshwater filling port. Inspecting the tank, I found it full. When we arrived it was at three quarters. We were connected to shore water for the entire visit and I did not touch the freshwater tank. Does anyone have an idea as to how the mystery water may have entered the tank?

[16ACE27]

Backflow through the water pump. My be due to crap in the check-valve. Clean the pump strainer and run the pump to clean it out. If that doesn't fix it you may need a pump rebuild kit or a new pump.

[iDrive55]

Sounds like a good place to start. I figured there was a check-valve in the system somewhere. Thanks, Tfryman.

[Bob Denman]

Please let us know what you find in there, and good luck!

[wayneroe]

I had the same issue a couple of trips ago. I did almost what Tfryman suggests here and haven't had any more problems. Rather than removing and cleaning the strainer, since I wasn't going to be home for almost three weeks, I just unhooked the city water and ran the fresh water for several minutes, then drained about 1/3 of the water I had in the fresh water tank and went two days on the road using only fresh water. Then, I hooked city water back up and watched it closely. I haven't had any more problems. Apparently whatever debris had fouled the check-valve was flushed out by running the pump and what splashing around the water did while driving. Just to be sure, though, I plan to remove the pump strainer and clean it real good before heading on our next trip.