As the link from the water authority shows, the water is not contaminated (at least at the source). When you get sick from drinking the water in a foreign land, it is because of microorganisms in the water. Public water in the US is treated to remove these organisms, and unless there is some problem with the treatment system, you won't get this kind of illness from drinking water. (For more general info, see http://www.epa.gov/OGWDW/faq/faq.html#2ndary)
However, water can have strong tastes and smells, and can have different levels of various chemicals that are not believed to have adverse health effects. It is certainly possible that some of these could make a few people sick--indeed, some people may feel sick because of the taste or smell alone.
A number of posters have stated with some certainty that the water at WDW made them sick. It's possible, but there are other possibilities too, such as food poisoning, an infectious illness (like the flu or even a bad cold), allergy, etc. Millions of people visit WDW every year, and I am confident that very few of them get sick from the water. So I'd say that unless you have some condition that makes you especially susceptible to changes in your water, don't worry about it.
However, water can have strong tastes and smells, and can have different levels of various chemicals that are not believed to have adverse health effects. It is certainly possible that some of these could make a few people sick--indeed, some people may feel sick because of the taste or smell alone.
A number of posters have stated with some certainty that the water at WDW made them sick. It's possible, but there are other possibilities too, such as food poisoning, an infectious illness (like the flu or even a bad cold), allergy, etc. Millions of people visit WDW every year, and I am confident that very few of them get sick from the water. So I'd say that unless you have some condition that makes you especially susceptible to changes in your water, don't worry about it.