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Before Buying a Water Filter, Read This

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Before Buying a Water Filter, Read This

By Robert Coleman

The findings of the Environmental Working Group's (EWG) just-released Tap Water Database may be shocking to many Americans, as they show that the drinking water supplies of nearly everyone in the nation are tainted with chemicals at levels exceeding at least one health-protective guideline.


If you're concerned about what's in your water, buying a water filter is a smart next step. In conjunction with the database, we've released an updated Water Filter Buying Guide.

But before you dive into the filter guide, here's what you need to know:

  • Bottled water is hundreds of times more expensive than tap water and may, in fact, just be filtered tap water. Bottled water may also be contaminated with chemicals that can leach from the plastic bottles.
  • We understand that cost and other considerations dictate decisions on what filter system you should buy. Check out our filter technology explainer to get the lowdown on all of the products on the market.

When you're ready to find the right filter for your needs, check out our user-friendly search engine that allows you to search for filters by physical type (a pitcher, faucet mount, installed in plumbing, etc.), the filtration technology used, and contaminants the filter is certified to remove.

When you search, you'll reach a result page that lists every filter that fits your criteria alphabetically. Click on a filter's name to find out more about it.

For every filter in our guide, we provide an option to buy it online, from Amazon or directly from the manufacturer. We also provide information on what contaminants each filter is certified to remove and additional claims made by the manufacturer.

Once you begin filtering your water, be sure to come back to our filter guide to see our tips on maintaining your filter.

A crowd of climate activists march behind a banner in NYC during Climate Week on September 20, 2020. Erik McGregor / LightRocket / Getty Images

By Breanna Draxler

After decades on the political periphery, the climate movement is entering the mainstream in 2020, with young leaders at the fore. The Sunrise Movement now includes more than 400 local groups educating and advocating for political action on climate change. Countless students around the world have clearly communicated what's at stake for their futures, notably Swedish activist Greta Thunberg, who just finished her yearlong school strike for climate. Youth activists have been praised for their flexible, big-picture thinking and ability to harness social media to deliver political wins, as Sunrise recently did for U.S. Sen. Ed Markey's primary campaign. They necessarily challenge the status quo.

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Presidential nominee Joe Biden has not taken a stance on gas exports, including liquefied natural gas. Ken Hodge / Wikimedia Commons / CC by 2.0

By Simon Montlake

For more than a decade, Susan Jane Brown has been battling to stop a natural gas pipeline and export terminal from being built in the backcountry of Oregon. As an attorney at the nonprofit Western Environmental Law Center, she has repeatedly argued that the project's environmental, social, and health costs are too high.

All that was before this month's deadly wildfires in Oregon shrouded the skies above her home office in Portland. "It puts a fine point on it. These fossil fuel projects are contributing to global climate change," she says.

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Eating lots of fruits and vegetables will boost the immune system. Stevens Fremont / The Image Bank / Getty Images

By Grayson Jaggers

The connection between the pandemic and our dietary habits is undeniable. The stress of isolation coupled with a struggling economy has caused many of us to seek comfort with our old friends: Big Mac, Tom Collins, Ben and Jerry. But overindulging in this kind of food and drink might not just be affecting your waistline, but could potentially put you at greater risk of illness by hindering your immune system.

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A graphic shows how Rhoel Dinglasan's smartphone-based saliva test works. University of Florida

As the world continues to navigate the line between reopening and maintaining safety protocols to slow the spread of the coronavirus, rapid and accurate diagnostic screening remains critical to control the outbreak. New mobile-phone-based, self-administered COVID-19 tests being developed independently around the world could be a key breakthrough in making testing more widely available, especially in developing nations.

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A meteorologist monitors weather in NOAA's Center for Weather and Climate Prediction on July 2, 2013 in Riverdale, Maryland. Mark Wilson / Getty Images

The Trump White House is now set to appoint two climate deniers to the National Oceanic and Atmospheric Administration (NOAA) in one month.

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