 Does your state have the worst tap water in the U.S.? What makes these states have such great water is that there's a lot of it, and they protect their water sources. South Carolina gets 48 inches of rain per year on average. Alabama has hundreds of thousands of miles of fresh surface water. Hawaii's water tastes great because it's filtered through layers of volcanic rock. Now, these are the states with the worst water. This doesn't mean that they're the worst tasting, but they do have the most EPA violations. West Virginia's water has a lot of chemical contamination. Montana's has toxic algae and high levels of nitrates. And Alaska's has radium in it due to fracking and oil drilling. So if you're in any of these states, avoid drinking the tap water unless it's filtered.