Water Quality
Contaminants in tap and bottled water including PFAS, lead, and chlorination byproducts.
Why it matters
Water is a daily exposure vector. PFAS ('forever chemicals') are now detected in most U.S. water supplies.
What is known
EWG Tap Water Database provides zip-code level data. Reverse osmosis and activated carbon filters address most common contaminants. Bottled water is not necessarily cleaner.