On longer rides I tend to use up both of my water bottles and start looking for a place to refill.
Here's a few spots around Whatcom county I've found with easy roll up access to water.
If anyone can add some that would be great! Boundary Bay Brewery doesn't count...
Roughly North to South:
Pioneer Park (sink at picnic pavillion)
Tenant Lake (drinking fountain)
Cornwall Park (drinking fountain, seasonal)
Zuanich Point (drinking fountain)
Post Point (drinking fountain)
Lake Sammish park (drinking fountain)