Is there a way around this when I don't have fender liner? I'm thinking my sockets are just old so I might order new ones.

I do a lot of driving in the rain for delivery so it's hard not to hit a big puddle every now and then.

 

Check the cover (outside lens) of the corner light. If it says Stanley on it (embossed) then it's an OEM corner light and it's most likely just the rubber seal is old and compressed.

If you have the OEM corner light I would first just try buying a new o-ring seal for it from Honda for a few bucks.