Donna, where are you in TX? We built our new house about 100 ft from our own personal pond that is about 3 acres big. The pond has been here forever, and snakes are an issue. Particularly water moccasins. Thankfully though I have a husband that does an excellent job weed eating and mowing around the pond, and we usually have a gun with us specifically for killing snakes whenever we run across one. My DH is very vigilant. However, we wouldn't live anywhere else. We were in Dallas for years, but I would rather fight snakes than traffic any day...
To be fair, as much as I am freaked out by snakes, you're going to have predators everywhere. In our pond, the snakes haven't been nearly as deadly to our ducks and geese as the big red tail hawks and owls that live in our pasture.
And as for spiders, if you were in TX during the summer of 2011 and recall that 100 year drought we had - that turbo boosted the number of poisonous spiders that we have here. Black widows particularly thrive in super dry conditions. Even having our adult chickens free ranging around our home last year, we have had a nasty time fighting the spiders. I have moved the chickens and now literally have the exterminators coming to spray around our house once a month.