We found abandoned oil and gas wells were leaking methane into groundwater," study author Samuel Shaheen told Newsweek.

If you’re worried that your well water is at risk, you can get it tested. To get a sense of your risk, check the online map ...

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About 1 in every 10 Iowa residents depends on a private well for drinking water. But these wells are not regulated under the Safe Drinking Water Act, so owners are responsible for their upkeep and ...