Your home's water quality could vary by the room—and the season

Drinking water at a home’s faucet is not the same quality as the water at a service line, researchers have found. Pictured: Maryam Salehi. Credit: Purdue University photo/Erin Easterling

Is the water in your home actually safe, given that water utility companies in the U.S. aren’t required by law to monitor the water that specifically enters a building at its service line?

A study has found that the water quality of a home can differ in each room and change between seasons, challenging the assumption that the water in a public water system is the same as the water that passes through a building’s plumbing at any time of the year.
“This study reveals that drinking water in the service line water is clearly not the same quality at your faucet,” said Andrew Whelton, a Purdue University associate professor of civil engineering and environmental and ecological engineering….

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