A new water drip

[rrjt3252]

I have a 2022 Sporttrek 333VMI and about 2 days ago I noticed water coming out of a new place on the right rear side.

Can anyone tell me what this might be?
I am hooked up to camp water and sewer on a permanent setup.

 

[Fish]

That looks like your fresh water tank overflow.

 

[rrjt3252]

That looks like your fresh water tank overflow.

I'm not sure why all of a sudden my fresh water tank is full and overflowing since I'm connected to fresh water.

 

[Kevin D Pem]

Would guess backflow valve after the pump.

 

[DennisT]

Sometimes, after running the pump then switching to city water, the check valve mentioned above does not seat and the fresh water tank fills up.

When it happened to us I turned off city water, opened a faucet to relieve pressure, then turned city water back on. The small surge usually reset the check valve.