Is there a water soruce to hook up a water hose

Beside the leash free area entrance, there is a spicket with a little hose attached you can wash off your dog or fill water bottles to take into the leash-free area. There's usually several plastic bottles in the leash-free area that you can flll if they don't already have water in them. And couple of dog dishes there too.

Yes. It's by the sandbox.

Yes.. There is a facility for wash..

Yes

Yes. Willis D. Tucker Community Park 6705 Puget Park Drive  Snohomish, WA 98296 Contact 425-388-6600 Hours 7 a.m. to Dusk

Yes. By the parking lot.