The number of Americans with lead-tainted tap water has risen to 5 million, according to a new report from the Water Supply Trust, a nonprofit organization that monitors and helps reduce water contamination.
The water-quality data are based on a study that looked at 1.3 million samples from nearly 5 million people across the country and compared the number with the number in Flint, Mich., the largest city with a lead problem in the country.
In the United States, nearly a quarter of the nation’s households have lead-contaminated tap water.
That means that more than 5 million Americans have the water-contamination risk levels for lead.
The data also showed that there are nearly 9 million households in the United Kingdom, Ireland, France and the United Arab Emirates with drinking-water contamination levels above the federal level.
And, for the first time, the data showed that Flint residents are more likely than the national average to have lead levels above state and local guidelines.
The U.S. average is 1.9 lead per 1,000 people.