Flooded Crawl Space
I can't vouch for your Home Inspector's qualifications but did he say anything about the 'sloping' of the landscaping around the crawlspace/foundation/entire house? Did he make any 'notes' about the condition of the gutters, or lack thereof? Did he make any notes about the location of the downspouts in relation to where they 'empty' out onto the ground???
Most likely, your problem is attributed to 1) water running 'back' towards the foundation/crawl, 2) missing gutters, or even leaking gutters, along the roof line, 3) downspouts that aren't extended far enough away from the foundation, and the water is ending up in the crawl, and/or 4) a neighbor's water is ending up on your lot.
The next time you experience a sustained rainstorm, don your raincoat, boots, and umbrella, and inspect the roofline and landscape ALL AROUND the house. Watch out for lightening! Don't just look where your problem lies. Water will 'travel', and it will travel along the path of least resistance. That path could be originating from a TOTALLY different location around the house than where you're experiencing your problem. My $$$ says your problem 1 or more of the items I listed above.
My best to ya and hope this helps.
Jay J -Moderator
PS: God Bless America!