House crawl space water advice

[LostinVA]

Okay, so the pest guy was just here in the crawl space (flying squirrel problems, but that's another thread). He said there's ALOT of standing water around the foundation perimeter -- like 1." WTF??? He said there are no leaks from pipes, etc, no source of the water at all. He says it's like it's getting in somehow and not being able to get out. Any ideas? I do NOT have $3-5 to fix something bad!

I'll say this: when it rains, we have oodles of standing water in the yard, and it's rained and snowed alot this Fall and Winter. I have no idea how to fix this. WE bought the house in June.