According to the Safe Drinking Water Act, all public water systems must ensure that their water is safe to drink. They have two different categories. The first is the National Primary Drinking Water Regulation. This regulation states the exact specifications that water sources must meet for our consumption. The second category is the National Secondary Drinking Water Act Regulation. This is the regulation that tells and monitors taste, color and texture. The water must be clean but doesn't have to look or taste great.