From the Environmental Working Group:
EWG’s new national Tap Water Database is the most complete source available on the quality of U.S. drinking water, aggregating and analyzing data from almost 50,000 public water systems in all 50 states and the District of Columbia.
EWG researchers spent the last two years collecting data from state agencies and the EPA for drinking water tests conducted from 2010 to 2015 by 48,712 water utilities in all 50 states and D.C. All told, the utilities tested for approximately 500 different contaminants and found 267.
Contaminants detected in the nation’s tap water included:
- 93 linked to an increased risk of cancer. More than 40,000 water systems had detections of known or likely carcinogens exceeding established federal or state health guidelines – levels that pose minimal but real health risks, but are not legally enforceable.
- 78 associated with brain and nervous system damage.
- 63 connected to developmental harm to children or fetuses.
- 45 linked to hormone disruption.
- 38 that may cause fertility problems.
The safety of the nation’s drinking water was thrust back into the headlines in the summer of 2015, when extremely high levels of lead were discovered in the water supply of Flint, Mich. Data compiled by EWG shows that between 2010 and 2015, nearly 19,000 public water systems had at least one detection of lead at levels that could pose a risk to bottle-fed infants.
Direct to EWG’s Tap Water Database