water leak near city water hook up

So, I toggled the switch which takes the water source and either sends it to my fresh water tank or to my fixtures....I did this about 4 or 5 times and heard the 'click' each time... I kept the drain for the tank open during the entire process....Then left the switch on the city water setting and waited to see what happened/ My luck had it that it rained all day yesterday . Anyway, I put a measuring cup under the drain last night and this morning had about 12 ounces of water in the cup....I am hoping that this was residual water still seeping out and that perhaps the problem has been solved. I will watch it today and report back...I may still look into adding that extra calve into the water pump flow, just as a precaution. Our 5th wheel was in storage for almost 6 months, so I suppose the non-use of water might have dried a seal out or something ….