These systems provide drinking water in places that serve different people every day. The risk is low that any person will drink enough of this water to be at risk for cumulative exposure, and the regulated contaminant list reflects this lower risk. Neilson Research Corporation provides regular monitoring for places where water is provided to transient populations, such as parks, restaurants, campgrounds, and playgrounds. Neilson Research Corporation provides unquestionable data to satisfy regulatory authorities under the Safe Drinking Water Act.