We spent Christmas week parked at my daughter's house in Tampa. We were on electric, but using onboard water with the water pump, I believe it is a ShurFlow.
Anyway, this time camping we had the water pump switched on most of the time. So we didn't have to switch it every time we needed water for anything.
I noticed that about 45 mins to an hour after no use, the water pump would kick on, for just an instant, then go right back off. I checked all faucets for any dripping, as well as under the sinks, the toilet sprayer and any hoses I could see under our bed, where our water pump and most of the water lines go to) and could not find any leak or even droplets. I even checked the water hose and faucets in my dump bay, nothing there either. I also did not notice any water dripping from under the motorhome or into any of the storage bays.
Is it normal for pressure to just drop a little over time. Or, is there some kind of backflow/check valve at or near the pump that may be allowing pressure to drop, just enough to trigger the pump to come back on for a moment?