U.S. Cities With the Best Water


Flint, Michigan’s water contamination issues have dominated news headlines over the last several years.

More recently, the train derailment in East Palestine, Ohio, released toxic chemicals that now threaten the local water supply.

To determine water quality in the U.S. and identify which areas have the least contaminated drinking water, we collected water quality data from the Environmental Working Group (EWG) and SimpleLab.

Five cities with the least contaminated water:

Memphis, TN Savannah, GA Provo, UT San Francisco, CA Nashville, TN

the cities with the fewest contaminants exceeding EWG health guidelines were:

Providence, RI Columbia, MD Memphis, TN San Francisco, CA Orlando, FL Jacksonville, FL

Madison also came first among cities with the lowest levels of bromodichloromethane:

Madison, WI Montgomery, AL Kansas City, MO San Francisco, CA Provo, UT

Chloroform and bromodichloromethane are two of the four potentially cancer-causing contaminants known as trihalomethanes (dibromochloromethane and bromoform are the other two).

Total trihalomethanes (TTHMs) is a measurement of these four chemicals in drinking water. Memphis and Madison had the lowest levels of TTHMs, while Wilmington, Delaware, had the highest.

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