(CNN) – You might want to think twice about filling your glass from the sink.

There may be cancer-causing products in tap water.

That’s according to a new report from the Environmental Working Group.

Researchers say they found 22 carcinogens – including arsenic, uranium, and radium – in tap water.

The watchdog group says there may be a health risk even though most tap water meets the legal standards put in place by the federal government.

The study was published Thursday in the journal Heliyon.

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