My daughter and son-in-law live in Bethpage over the toxic plume, so I follow Newsday’s coverage closely. This is a life-threatening risk [“Cleaning up the water,” News, Feb. 18].

For too long, the polluters have delayed any effective action to clean up the problem. Possibly compounding that is the new federal administration’s attitude toward our environment.

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What can residents do to mitigate their risk?

My daughter and son-in-law have an in-line water filter for the house, and they also filter their drinking water a second time. But are these devices effective against trichloroethelene, named in your article? Are there other chemicals residents need to filter? Are there filters available that will do the job?

Michael Tedaldi, Hicksville