My wife and I purchased a home 3 years ago in southern Alabama. At that time, there was no water in the crawl space. We recently listed our house and had an accepted offer. The inspector found so much standing water under the house (in crawl space) that he would not even go under to inspect until it was dry. We have 14 air vents and an access point that were all at or slightly below grade. (The previous owners must have built up the lot a while back). The ground level in the crawl space is about 6" lower than the exterior ground. We assumed that rain water runoff was pouring through the vent holes, so I had a brick mason come and raise all of the vent holes and access point by two rows of brick (approximately 6") above the exterior grade. I had a plumbing company come out and pump all of the water out. They also tested for water, drain, sewage leaks and none were found. It stayed completely dry until yesterday. We had a rainstorm (approximately 3" of rain), and when I got home, under my house is like a lake again. I would guess there is over 3000 gallons of water in a 12 hour period. What I have figured so far... There is no possible way for runoff to get under the house. There is also no way that that much water could have gotten under the house through seepage in that amount of time. I think there has to be a storm drain running under my property that is backing up during rain and flooding under my house, OR there could be an underground spring that only surfaces during heavy rain. I'm not so sure about the spring since there is not any evidence of standing water or water coming from the ground on the outside of the help. That being said, I am at a loss as to who I need to call, what to do. I did have a foundation specialist tell me that we needed to add a sump pump under the house and all of this other draining stuff totaling over $10,000. That is not an option. I really need to find out where this water is coming from! Any help/suggestions would be greatly appreciated.