15 Cities with the Cleanest Tap Water in the US in 2017

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3. Sioux Falls, SD

Contaminants detected above health guidelines: 2

Apart from the water it provides itself, the utility of Sioux Falls also buys and brings water from other public utilities in order to provide enough water for the consumers. The two harmful chemicals exceeding prescribed limits are chromium and trihalomethanes.

15 Cities with the Cleanest Tap Water in the US in 2017

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