
Whether you're a conscious consumer yourself or are looking for the perfect gift for your environmentally-friendly friend or family member, we've rounded up the best eco-friendly gifts for sustainable living this holiday season.
According to Stanford University, Americans toss 25 percent more trash between Thanksgiving and New Year's Day than any other time of year. Don't become a statistic — check out our last-minute eco-friendly stocking stuffer ideas, sustainable gift wrap guide, and the products listed below to have a low- or even zero-waste holiday.
Each product featured here has been independently selected by the writer. If you make a purchase using the links included, we may earn commission.
1. Utopia Kitchen Stainless Steel Countertop Compost Bin
If you want to reduce your waste but are tight on space, the Utopia Kitchen Countertop Compost Bin is a must-have. This bin is ideal for apartment composting, as it holds five liters of food scraps and uses charcoal filters to eliminate odors and pests. Plus, it has a convenient handle for carrying your compost outside or to a food waste recycling center.
Customer Rating: 4.6 out of 5 stars with more than 8,000 Amazon reviews
Why Buy: Zero-waste; Odor-free composting; Easy to clean; Plastic-free
2. Yarkor Bamboo Tofu Press
The key to delicious tofu is pressing the excess water out before cooking, but doing this can be a messy and time-consuming process. That's why one of our best eco-friendly gifts for plant-based eaters is the Yarkor Bamboo Tofu Press. It has a simple design that presses tofu blocks pressed between two bamboo plates while excess water drains into an easy-to-clean, leak-proof compartment.
Customer Rating: 4.3 out of 5 stars with more than 150 Amazon reviews
Why Buy: Vegan-friendly; Easy to clean; Plastic-free
3. Hydro Flask Insulated Water Bottle
Carrying a reusable, eco-friendly water bottle is one of the easiest ways to reduce your single-use plastic consumption – and stay hydrated throughout the day. We recommend Hydro Flasks because they're fun and functional, have a grippy powder coating that prevents bottle sweating, and can keep beverages hot or cold for hours on end.
Customer Rating: 4.8 out of 5 stars with nearly 11,000 Amazon reviews
Why Buy: Zero-waste; Free of BPA and phthalates; Easy to clean; Dishwasher safe
4. AeroGarden Harvest 360 Indoor Hydroponic Garden
With an AeroGarden Indoor Hydroponic Garden, even serial plant-killers can have fresh herbs year-round. This innovative system takes the work out of gardening – simply pop in the seed pods, add plant food or water when necessary, and let nature take its course. If whomever you're shopping for already owns an AeroGarden, they may appreciate a Salad Greens or Salsa Garden Seed Pod Kit to grow.
Customer Rating: 4.6 out of 5 stars with more than 1,000 Amazon reviews
Why Buy: Zero-waste; Non-GMO seeds
5. Mioeco Reusable Unpaper Towels
"Unpaper" towels are a zero-waste alternative to your typical kitchen roll. Mioeco Reusable Unpaper Towels come in packs of 10 or 20 and can be wrapped around an old paper towel roll for convenience. They're made in a solar-powered, carbon-neutral facility and are Global Organic Textile Standard (GOTS) certified, which means they're made with at least 95% organic fiber and aren't treated with harmful chemicals and dyes.
Customer Rating: 4.4 out of 5 stars with nearly 1,000 Amazon reviews
Why Buy: Zero-waste; Solar-powered, carbon-neutral manufacturing; GOTS-certified material; Machine-washable; Plastic-free
6. Original Grind Coffee Co. One-Gallon Cold Brew Coffee Maker
Looking for eco-friendly gifts for the coffee lover in your life? The Original Grind Cold Brew Coffee Maker takes single-use plastics out of your morning routine. Just pour your favorite coarse-ground beans into the mesh filter, fill it with water, and let it sit for 12 to 18 hours. The stainless-steel spigot allows for no-spill dispensing, and you can use the grounds to make a DIY exfoliant (or toss them in your brand-new compost bin).
Customer Rating: 4.7 out of 5 stars with more than 700 Amazon reviews
Why Buy: Zero-waste; Plastic-free; Easy to clean; Great for small kitchens and apartments
7. KeepCup 16oz Reusable Coffee Cup
After you've brewed your coffee, you'll need something to drink it out of. We like the KeepCup 16oz Reusable Coffee Cup, which can be filled at home or at a coffee shop (COVID-permitting). These sleek to-go mugs come in a variety of lid colors and sizes, but none is too big to fit in a standard cup holder. KeepCup is a certified B Corp, and the company donates part of its annual revenue to protect the environment through the 1% for the Planet initiative.
Customer Rating: 4.6 out of 5 stars with almost 15,000 Amazon reviews
Why Buy: Zero-waste; Packaging made from Forest Stewardship Council (FSC) certified cardboard; Certified B Corp; Supports 1% for the Planet; Free of BPA and BPS
8. Origin Fruit and Tea Glass Infuser Bottle
If you're more of a tea person, the Origin Fruit and Tea Glass Infuser Bottle might be up your alley. The bottle comes with a fine-mesh strainer insert that you can fill with loose tea or fruit slices to make infused water or tea on the go. Along with promoting sustainability, Origin is a socially responsible company, donating 2% of revenue to address extreme poverty.
Customer Rating: 4.5 out of 5 stars with almost 500 Amazon reviews
Why Buy: BPA, BPS, PVC, and lead-free; Dishwasher safe; Zero-waste; Supports socially conscious initiatives
9. Stasher 100% Silicone Food-Grade Reusable Storage Bag Set
The Stasher Reusable Storage Bag Set helps you cut out single-use plastic without skipping on convenience. They have a locking seal that keeps food fresh and can be tossed in the dishwasher after use. This gift set comes in multiple colors and includes two sandwich bags, a snack bag, and a half-gallon bag, making it a great eco-friendly gift for just about anyone on your list.
Customer Rating: 4.6 out of 5 stars with more than 700 Amazon reviews
Why Buy: Zero-waste; Dishwasher-safe; Non-toxic; Free of PVC, BPA, and latex; Supports 1% for the Planet; Certified B Corp
10. SodaStream Fizzi One Touch Sparkling Water Maker
LaCroix cans cluttering your recycling bin? Ditch the aluminum and start making your own seltzer with the SodaStream Fizzi One Touch Sparkling Water Maker. The SodaStream infuses still water with carbon dioxide bubbles using CO2 canisters that can be sent back to the company to refill. It comes with a BPA-free plastic bottle, but you can also purchase a glass replacement. And don't forget the Fruit Drops for added flavor.
Customer Rating: 4.6 out of 5 stars with more than 700 Amazon reviews
Why Buy: Zero-waste; Dishwasher-safe; Non-toxic; Free of PVC, BPA, and latex; Supports 1% for the Planet; CO2 canisters are reusable
11. Pela 100% Compostable and Biodegradable Phone Case
If someone on your list is getting a new phone from Santa, get them an eco-friendly gift to go with it, like the Pela 100% Compostable and Biodegradable Phone Case. Not only are Pela cases stylish, but they're made from recycled materials, a plant-based biopolymer, and flax straw fibers that are a waste byproduct of producing flaxseed oil.
Customer Rating: 4.6 out of 5 stars with more than 350 Amazon reviews
Why Buy: Zero-waste; 100% compostable and biodegradable; Non-toxic; Sustainable packaging; Supports 1% for the Planet; Certified B Corp; Made from recycled materials
12. Suga Recycled Wetsuit Yoga Mat
The Suga Recycled Wetsuit Yoga Mat is one of our favorite sustainable gifts for yogis. Made from old surfing wetsuits, these upcycled neoprene mats are grippy, supportive, and more durable than a typical yoga mat. Plus, Suga encourages sending mats back for recycling at the end of their useful lives. Not sold on Suga? See our eco-friendly yoga mat review for more green gift options.
Customer Rating: 4.4 out of 5 stars with under 100 Amazon reviews
Why Buy: Made in the USA; Made from recycled materials; Can be sent back and recycled by the company; Supports 1% for the Planet; Non-toxic
13. Sheets & Giggles 100% Eucalyptus Lyocell Sheet Set
Luxury meets sustainability with the Sheets & Giggles 100% Eucalyptus Lyocell Sheet Set. These buttery soft bed linens are made from high-quality eucalyptus wood pulp that's harvested on sustainably managed, biodiverse farms instead of wild forests. The best part? For every tree harvested, Sheets & Giggles plants two more trees in its place.
Customer Rating: 4.4 out of 5 stars with nearly 1,000 Amazon reviews
Why Buy: Hypoallergenic; 100% biodegradable; Non-plastic packaging; Pesticide-free; Plants one tree for every order received and two trees for every tree harvested
14. 4ocean Signature Blue Bracelet
4ocean removes a pound of trash from the ocean for every product sold. Since 2017, the company has pulled nearly 12 million pounds of trash from our waterways and sustainably disposed of them, including recycling glass and plastic bottles to create their 4ocean Signature Bracelets. These bracelets make a beautiful, eco-friendly gift for those who like to show off their care for the environment.
Customer Rating: 4.5 out of 5 stars with more than 1,000 Amazon reviews
Why Buy: Each purchase removes 1 pound of trash from the ocean; Certified B Corp; Made from recycled plastic and glass
15. Prestige Decanter Bourbon Barrel Whiskey Decanter
You can feel good about giving this eco-friendly gift to your dad, husband, brother, or any other whiskey enthusiast on your list. Not only is each Prestige Decanter Bourbon Barrel Whiskey Decanter made with sustainable materials, but for each product sold, the company plants one tree. The hand-blown decanter holds 1,000 milliliters and is available in many styles.
Customer Rating: 4.3 out of 5 stars with about 150 Amazon reviews
Why Buy: Handcrafted; Lead-free; Recyclable packaging; Plants a tree for each decanter sold
Melissa Smith is an avid writer, scuba diver, backpacker, and all-around outdoor enthusiast. She graduated from the University of Florida with degrees in journalism and sustainable studies. Before joining EcoWatch, Melissa worked as the managing editor of Scuba Diving magazine and the communications manager of The Ocean Agency, a non-profit that's featured in the Emmy award-winning documentary Chasing Coral.
Cities Can Help Migrating Birds on Their Way By Planting More Trees and Turning Lights Off at Night
By Frank La Sorte and Kyle Horton
Millions of birds travel between their breeding and wintering grounds during spring and autumn migration, creating one of the greatest spectacles of the natural world. These journeys often span incredible distances. For example, the Blackpoll warbler, which weighs less than half an ounce, may travel up to 1,500 miles between its nesting grounds in Canada and its wintering grounds in the Caribbean and South America.
Blackpoll warbler abundance in breeding, non-breeding and migration seasons. Cornell Lab of Ornithology / CC BY-ND
<p>For many species, these journeys take place at night, when skies typically are calmer and predators are less active. Scientists do not have a good understanding yet of how birds navigate effectively at night over long distances.</p><p><span></span>We study bird migration and how it is being affected by factors ranging from <a href="https://scholar.google.com/citations?user=S04C3UMAAAAJ&hl=en" target="_blank">climate change</a> to <a href="https://scholar.google.com/citations?user=pPk38-8AAAAJ&hl=en" target="_blank">artificial light at night</a>. In a recent study, we used millions of bird observations by citizen scientists to document the <a href="https://doi.org/10.1016/j.envpol.2020.116085" target="_blank">occurrence of migratory bird species in 333 U.S. cities</a> during the winter, spring, summer and autumn.</p>Blackpoll warbler. PJTurgeon / Wikipedia
<p>We used this information to determine how the number of migratory bird species varies based on each city's level of <a href="https://www.britannica.com/science/light-pollution" target="_blank" rel="noopener noreferrer">light pollution</a> – brightening of the night sky caused by artificial light sources, such as buildings and streetlights. We also explored how species numbers vary based on the quantity of tree canopy cover and impervious surface, such as concrete and asphalt, within each city. Our findings show that cities can help migrating birds by planting more trees and reducing light pollution, especially during spring and autumn migration.</p>Declining Bird Populations
<p>Urban areas contain numerous dangers for migratory birds. The biggest threat is the risk of <a href="https://doi.org/10.1650/CONDOR-13-090.1" target="_blank">colliding with buildings or communication towers</a>. Many migratory bird populations have <a href="http://dx.doi.org/10.1126/science.aaw1313" target="_blank">declined over the past 50 years</a>, and it is possible that light pollution from cities is contributing to these losses.</p><p>Scientists widely agree that light pollution can <a href="https://doi.org/10.1073/pnas.1708574114" target="_blank">severely disorient migratory birds</a> and make it hard for them to navigate. Studies have shown that birds will cluster around brightly lit structures, much like insects flying around a porch light at night. Cities are the <a href="https://doi.org/10.1002/fee.2029" target="_blank" rel="noopener noreferrer">primary source of light pollution for migratory birds</a>, and these species tend to be more abundant within cities <a href="https://onlinelibrary.wiley.com/doi/abs/10.1111/gcb.13792" target="_blank" rel="noopener noreferrer">during migration</a>, especially in <a href="https://doi.org/10.1016/j.landurbplan.2020.103892" target="_blank" rel="noopener noreferrer">city parks</a>.</p>Composite image of the continental U.S. at night from satellite photos. NASA Earth Observatory images by Joshua Stevens, using Suomi NPP VIIRS data from Miguel Román, NASA's Goddard Space Flight Center
The Power of Citizen Science
<p>It's not easy to observe and document bird migration, especially for species that migrate at night. The main challenge is that many of these species are very small, which limits scientists' ability to use electronic tracking devices.</p><p>With the growth of the internet and other information technologies, new data resources are becoming available that are making it possible to overcome some of these challenges. <a href="https://doi.org/10.1038/d41586-018-07106-5" target="_blank">Citizen science initiatives</a> in which volunteers use online portals to enter their observations of the natural world have become an important resource for researchers.</p><p>One such initiative, <a href="https://ebird.org/home" target="_blank" rel="noopener noreferrer">eBird</a>, allows bird-watchers around the globe to share their observations from any location and time. This has produced one of the <a href="https://doi.org/10.1111/ecog.04632" target="_blank" rel="noopener noreferrer">largest ecological citizen-science databases in the world</a>. To date, eBird contains over 922 million bird observations compiled by over 617,000 participants.</p>Light Pollution Both Attracts and Repels Migratory Birds
<p>Migratory bird species have evolved to use certain migration routes and types of habitat, such as forests, grasslands or marshes. While humans may enjoy seeing migratory birds appear in urban areas, it's generally not good for bird populations. In addition to the many hazards that exist in urban areas, cities typically lack the food resources and cover that birds need during migration or when raising their young. As scientists, we're concerned when we see evidence that migratory birds are being drawn away from their traditional migration routes and natural habitats.</p><p>Through our analysis of eBird data, we found that cities contained the greatest numbers of migratory bird species during spring and autumn migration. Higher levels of light pollution were associated with more species during migration – evidence that light pollution attracts migratory birds to cities across the U.S. This is cause for concern, as it shows that the influence of light pollution on migratory behavior is strong enough to increase the number of species that would normally be found in urban areas.</p><p>In contrast, we found that higher levels of light pollution were associated with fewer migratory bird species during the summer and winter. This is likely due to the scarcity of suitable habitat in cities, such as large forest patches, in combination with the adverse affects of light pollution on bird behavior and health. In addition, during these seasons, migratory birds are active only during the day and their populations are largely stationary, creating few opportunities for light pollution to attract them to urban areas.</p>Trees and Pavement
<p>We found that tree canopy cover was associated with more migratory bird species during spring migration and the summer. Trees provide important habitat for migratory birds during migration and the breeding season, so the presence of trees can have a strong effect on the number of migratory bird species that occur in cities.</p><p>Finally, we found that higher levels of impervious surface were associated with more migratory bird species during the winter. This result is somewhat surprising. It could be a product of the <a href="https://www.epa.gov/heatislands" target="_blank">urban heat island effect</a> – the fact that structures and paved surfaces in cities absorb and reemit more of the sun's heat than natural surfaces. Replacing vegetation with buildings, roads and parking lots can therefore make cities significantly warmer than surrounding lands. This effect could reduce cold stress on birds and increase food resources, such as insect populations, during the winter.</p><p>Our research adds to our understanding of how conditions in cities can both help and hurt migratory bird populations. We hope that our findings will inform urban planning initiatives and strategies to reduce the harmful effects of cities on migratory birds through such measures as <a href="https://www.arborday.org/programs/treecityusa/index.cfm" target="_blank" rel="noopener noreferrer">planting more trees</a> and initiating <a href="https://aeroecolab.com/uslights" target="_blank" rel="noopener noreferrer">lights-out programs</a>. Efforts to make it easier for migratory birds to complete their incredible journeys will help maintain their populations into the future.</p><p><em><span style="background-color: initial;"><a href="https://theconversation.com/profiles/frank-la-sorte-1191494" target="_blank">Frank La Sorte</a> is a r</span>esearch associate at the </em><em>Cornell Lab of Ornithology, Cornell University. <a href="https://theconversation.com/profiles/kyle-horton-1191498" target="_blank">Kyle Horton</a> is an assistant professor of Fish, Wildlife, and Conservation Biology at the Colorado State University.</em></p><p><em></em><em>Disclosure statement: Frank La Sorte receives funding from The Wolf Creek Charitable Foundation and the National Science Foundation (DBI-1939187). K</em><em>yle Horton does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.</em></p><p><em>Reposted with permission from <a href="https://theconversation.com/cities-can-help-migrating-birds-on-their-way-by-planting-more-trees-and-turning-lights-off-at-night-152573" target="_blank">The Conversation</a>. </em></p>EcoWatch Daily Newsletter
By Lynne Peeples
Editor's note: This story is part of a nine-month investigation of drinking water contamination across the U.S. The series is supported by funding from the Park Foundation and Water Foundation. Read the launch story, "Thirsting for Solutions," here.
In late September 2020, officials in Wrangell, Alaska, warned residents who were elderly, pregnant or had health problems to avoid drinking the city's tap water — unless they could filter it on their own.
Unintended Consequences
<p>Chemists first discovered disinfection by-products in treated drinking water in the 1970s. The trihalomethanes they found, they determined, had resulted from the reaction of chlorine with natural organic matter. Since then, scientists have identified more than 700 additional disinfection by-products. "And those only represent a portion. We still don't know half of them," says Richardson, whose lab has identified hundreds of disinfection by-products. </p>What’s Regulated and What’s Not?
<p>The U.S. Environmental Protection Agency (EPA) currently regulates 11 disinfection by-products — including a handful of trihalomethanes (THM) and haloacetic acids (HAA). While these represent only a small fraction of all disinfection by-products, EPA aims to use their presence to indicate the presence of other disinfection by-products. "The general idea is if you control THMs and HAAs, you implicitly or by default control everything else as well," says Korshin.</p><p>EPA also requires drinking water facilities to use techniques to reduce the concentration of organic materials before applying disinfectants, and regulates the quantity of disinfectants that systems use. These rules ultimately can help control levels of disinfection by-products in drinking water.</p>Click the image for an interactive version of this chart on the Environmental Working Group website.
<p>Still, some scientists and advocates argue that current regulations do not go far enough to protect the public. Many question whether the government is regulating the right disinfection by-products, and if water systems are doing enough to reduce disinfection by-products. EPA is now seeking public input as it considers potential revisions to regulations, including the possibility of regulating additional by-products. The agency held a <a href="https://www.epa.gov/dwsixyearreview/potential-revisions-microbial-and-disinfection-byproducts-rules" target="_blank">two-day public meeting</a> in October 2020 and plans to hold additional public meetings throughout 2021.</p><p>When EPA set regulations on disinfection by-products between the 1970s and early 2000s, the agency, as well as the scientific community, was primarily focused on by-products of reactions between organics and chlorine — historically the most common drinking water disinfectant. But the science has become increasingly clear that these chlorinated chemicals represent a fraction of the by-product problem.</p><p>For example, bromide or iodide can get caught up in the reaction, too. This is common where seawater penetrates a drinking water source. By itself, bromide is innocuous, says Korshin. "But it is extremely [reactive] with organics," he says. "As bromide levels increase with normal treatment, then concentrations of brominated disinfection by-products will increase quite rapidly."</p><p><a href="https://pubmed.ncbi.nlm.nih.gov/15487777/" target="_blank">Emerging</a> <a href="https://pubs.acs.org/doi/10.1021/acs.est.7b05440" target="_blank" rel="noopener noreferrer">data</a> indicate that brominated and iodinated by-products are potentially more harmful than the regulated by-products.</p><p>Almost half of the U.S. population lives within 50 miles of either the Atlantic or Pacific coasts, where saltwater intrusion can be a problem for drinking water supplies. "In the U.S., the rule of thumb is the closer to the sea, the more bromide you have," says Korshin, noting there are also places where bromide naturally leaches out from the soil. Still, some coastal areas tend to be spared. For example, the city of Seattle's water comes from the mountains, never making contact with seawater and tending to pick up minimal organic matter.</p><p>Hazardous disinfection by-products can also be an issue with desalination for drinking water. "As <a href="https://ensia.com/features/can-saltwater-quench-our-growing-thirst/" target="_blank" rel="noopener noreferrer">desalination</a> practices become more economical, then the issue of controlling bromide becomes quite important," adds Korshin.</p>Other Hot Spots
<p>Coastal areas represent just one type of hot spot for disinfection by-products. Agricultural regions tend to send organic matter — such as fertilizer and animal waste — into waterways. Areas with warmer climates generally have higher levels of natural organic matter. And nearly any urban area can be prone to stormwater runoff or combined sewer overflows, which can contain rainwater as well as untreated human waste, industrial wastewater, hazardous materials and organic debris. These events are especially common along the East Coast, notes Sydney Evans, a science analyst with the nonprofit Environmental Working Group (EWG, a collaborator on <a href="https://ensia.com/ensia-collections/troubled-waters/" target="_blank">this reporting project</a>).</p><p>The only drinking water sources that might be altogether free of disinfection by-products, suggests Richardson, are private wells that are not treated with disinfectants. She used to drink water from her own well. "It was always cold, coming from great depth through clay and granite," she says. "It was fabulous."</p><p>Today, Richardson gets her water from a city system that uses chloramine.</p>Toxic Treadmill
<p>Most community water systems in the U.S. use chlorine for disinfection in their treatment plant. Because disinfectants are needed to prevent bacteria growth as the water travels to the homes at the ends of the distribution lines, sometimes a second round of disinfection is also added in the pipes.</p><p>Here, systems usually opt for either chlorine or chloramine. "Chloramination is more long-lasting and does not form as many disinfection by-products through the system," says Steve Via, director of federal relations at the American Water Works Association. "Some studies show that chloramination may be more protective against organisms that inhabit biofilms such as Legionella."</p>Alternative Approaches
<p>When he moved to the U.S. from Germany, Prasse says he immediately noticed the bad taste of the water. "You can taste the chlorine here. That's not the case in Germany," he says.</p><p>In his home country, water systems use chlorine — if at all — at lower concentrations and at the very end of treatment. In the Netherlands, <a href="https://dwes.copernicus.org/articles/2/1/2009/dwes-2-1-2009.pdf" target="_blank">chlorine isn't used at all</a> as the risks are considered to outweigh the benefits, says Prasse. He notes the challenge in making a convincing connection between exposure to low concentrations of disinfection by-products and health effects, such as cancer, that can occur decades later. In contrast, exposure to a pathogen can make someone sick very quickly.</p><p>But many countries in Europe have not waited for proof and have taken a precautionary approach to reduce potential risk. The emphasis there is on alternative approaches for primary disinfection such as ozone or <a href="https://www.pbs.org/wgbh/nova/article/eco-friendly-way-disinfect-water-using-light/" target="_blank" rel="noopener noreferrer">ultraviolet light</a>. Reverse osmosis is among the "high-end" options, used to remove organic and inorganics from the water. While expensive, says Prasse, the method of forcing water through a semipermeable membrane is growing in popularity for systems that want to reuse wastewater for drinking water purposes.</p><p>Remucal notes that some treatment technologies may be good at removing a particular type of contaminant while being ineffective at removing another. "We need to think about the whole soup when we think about treatment," she says. What's more, Remucal explains, the mixture of contaminants may impact the body differently than any one chemical on its own. </p><p>Richardson's preferred treatment method is filtering the water with granulated activated carbon, followed by a low dose of chlorine.</p><p>Granulated activated carbon is essentially the same stuff that's in a household filter. (EWG recommends that consumers use a <a href="https://www.ewg.org/tapwater/reviewed-disinfection-byproducts.php#:~:text=EWG%20recommends%20using%20a%20home,as%20trihalomethanes%20and%20haloacetic%20acids." target="_blank" rel="noopener noreferrer">countertop carbon filter</a> to reduce levels of disinfection by-products.) While such a filter "would remove disinfection by-products after they're formed, in the plant they remove precursors before they form by-products," explains Richardson. She coauthored a <a href="https://pubs.acs.org/doi/10.1021/acs.est.9b00023" target="_blank" rel="noopener noreferrer">2019 paper</a> that concluded the treatment method is effective in reducing a wide range of regulated and unregulated disinfection by-products.</p><br>Greater Cincinnati Water Works installed a granulated activated carbon system in 1992, and is still one of relatively few full-scale plants that uses the technology. Courtesy of Greater Cincinnati Water Works.
<p>Despite the technology and its benefits being known for decades, relatively few full-scale plants use granulated active carbon. They often cite its high cost, Richardson says. "They say that, but the city of Cincinnati [Ohio] has not gone bankrupt using it," she says. "So, I'm not buying that argument anymore."</p><p>Greater Cincinnati Water Works installed a granulated activated carbon system in 1992. On a video call in December, Jeff Swertfeger, the superintendent of Greater Cincinnati Water Works, poured grains of what looks like black sand out of a glass tube and into his hand. It was actually crushed coal that has been baked in a furnace. Under a microscope, each grain looks like a sponge, said Swertfeger. When water passes over the carbon grains, he explained, open tunnels and pores provide extensive surface area to absorb contaminants.</p><p>While the granulated activated carbon initially was installed to address chemical spills and other industrial contamination concerns in the Ohio River, Cincinnati's main drinking water source, Swertfeger notes that the substance has turned out to "remove a lot of other stuff, too," including <a href="https://ensia.com/features/drinking-water-contamination-pfas-health/" target="_blank" rel="noopener noreferrer">PFAS</a> and disinfection by-product precursors.</p><p>"We use about one-third the amount of chlorine as we did before. It smells and tastes a lot better," he says. "The use of granulated activated carbon has resulted in lower disinfection by-products across the board."</p><p>Richardson is optimistic about being able to reduce risks from disinfection by-products in the future. "If we're smart, we can still kill those pathogens and lower our chemical disinfection by-product exposure at the same time," she says.</p><p><em>Reposted with permission from </em><em><a href="https://ensia.com/features/drinking-water-disinfection-byproducts-pathogens/" target="_blank">Ensia</a>. </em><a href="https://www.ecowatch.com/r/entryeditor/2649953730#/" target="_self"></a></p>Trending
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