12 Trump Attacks on the Environment Since the Election
By Tara Lohan
In the aftermath of the Nov. 3 election, President Donald Trump has tried every trick in the book to avoid facing the reality of his loss. A barrage of lawsuits accompanied by disinformation campaigns has attempted to cast doubt on the legitimacy of the election.
But a close look at regulatory actions and executive moves shows that, even as Trump makes a show of refusing to concede or transition power to the incoming Biden administration, his team is pushing through a slew of last-minute rules and regulations.
Many of these changes will harm the environment and public health.
It isn't surprising that an administration that has attempted to roll back more than 100 environmental protections in the past four years would step up its assault in its waning months. But that doesn't make the continued attacks any less important. Here's some of what's at risk:
1. Tribal Lands
Tribes and environmental groups have fought for decades against a proposed copper mine in an area of Arizona known as Oak Flat, which is a sacred site for a dozen tribes, including the San Carlos Apache.
Now the Trump administration is pushing to fast-track a deal that would transfer ownership of the land, which is in the Tonto National Forest, to Resolution Copper, a firm owned by mining companies Rio Tinto and Billiton BHP.
"Last month tribes discovered that the date for the completion of a crucial environmental review process has suddenly been moved forward by a full year, to December 2020, even as the tribes are struggling with a COVID outbreak that has stifled their ability to respond," an investigation by The Guardian found. "If the environmental review is completed before Trump leaves office, the tribes may be unable to stop the mine."
2. FERC Shakeup
Just days after the election, Trump switched up the leadership of the Federal Energy Regulatory Commission, which has a hand in regulating hydroelectric projects, as well as interstate transmission of electricity, oil and natural gas.
Chairman Neil Chatterjee was replaced by fellow Republican James Danly, who has a more conservative view on federal energy policy. Chatterjee, once known as a "coal guy," had recently advocated for policies supporting distributed energy and for regional grid operators to embrace carbon pricing as a market-based solution for addressing climate change.
3. Hamstringing LWCF
The Great American Outdoors Act, a major conservation bill signed into law in August, allocated $9.5 billion to help fix national park infrastructure and permanently fund the Land and Water Conservation Fund.
But despite (falsely) hailing himself as a conservation hero at the law's signing, Trump has already begun undermining the legislation's effectiveness. An order signed by Interior Secretary David Bernhardt on Nov. 9 allows state and local governments to veto any land or water acquisitions made through the fund.
Chris D'Angelo at HuffPost called the move a "parting gift to the anti-federal land movement." Montana Sen. Jon Tester, who advocated for the Land and Water Conservation Fund, wrote a letter to Bernhardt urging him to rescind the order. "This undercuts what a landowner can do with their own private property, and creates unnecessary, additional levels of bureaucracy that will hamstring future land acquisition through the Land and Water Conservation Fund," he wrote.
Senator Jon Tester at a press conference to discuss the Land and Water Conservation Fund in 2018. Public domain
In another blow, officials and conservation groups in New Mexico were surprised to learn that none of their projects proposed to receive funding through the Land and Water Conservation Fund were selected by the Department of the Interior. Some believe the move is political retribution for being critical of the Trump administration and its policies.
4. Dam Raising
On Nov. 20 the Trump administration finalized a plan to raise the height of Northern California's 600-foot Shasta Dam by 18.5 feet, which would allow for more water storage. The reservoir feeds the federally run Central Valley Project, which funnels water hundreds of miles south to cities and farms. That includes the politically connected Westlands Water District in the San Joaquin Valley, which formerly employed Interior Secretary David Bernhardt as a lawyer and lobbyist.
The state of California has strongly opposed the effort to raise the dam's height because it would flood the McCloud River, protected as wild and scenic. Conservation groups also say the plan would threaten endangered species such as Chinook salmon, delta smelt and Shasta salamanders.
California Rep. Jared Huffman called it the "QAnon of water projects, meaning it's laughably infeasible and just not real."
The staunchest opposition has come from the Winnemem Wintu Tribe, which lost 90% of its sacred sites with the construction of the dam and faces the loss of its remaining sites and burial grounds if the reservoir is expanded.
5. Pesticide Changes
The U.S. Environmental Protection Agency (EPA) announced on Nov. 20 it was taking away a tool states can use to control how pesticides are deployed. The action could further endanger farmworkers and wildlife.
A Section 24 provision of the Federal, Insecticide, Fungicide and Rodenticide Act lets states set stricter restrictions on federally regulated pesticides in response to local needs and conditions. But after numerous states sought to limit the use of the weed killer dicamba, the agency will now no longer allow states to set more protective rules for any pesticides.
6. Migratory Birds
A gutting of the Migratory Bird Treaty Act of 1918 took a big step forward at the end of November, clearing the way for the administration to finalize the rule change by the end of Trump's term.
The U.S. Fish and Wildlife Service released its Final Environmental Impact Statement to redefine the scope of the law to no longer penalize the energy industry or developers for "incidentally" killing migratory birds.
Pied-billed grebe on an oil-covered evaporation pond at a commercial oilfield wastewater disposal facility. Pedro Ramirez Jr. / USFWS
The agency's own analysis found that the rule change would "likely result in increased bird mortality" because — without penalties — companies wouldn't take additional precautions to help make sure birds aren't killed by their operations.
That's already proving true. "Since the administration began pursuing its looser interpretation of the law in April 2018, hundreds of birds have perished without penalty, according to documents compiled by conservation groups this year," The Washington Post reported.
7. ANWR Auction
The Bureau of Land Management announced on Dec. 3 that oil and gas leases in the Arctic National Wildlife Refuge would go on sale on Jan. 6, following a shortened time frame for the nomination and evaluation of potential tracts to be drilled.
"Once the sale is held, the bureau has to review and approve the leases, a process that typically takes months," The New York Times reported. "But holding the sale on Jan. 6 potentially gives the bureau opportunity to finalize the leases before Inauguration Day. That would make it more difficult for the Biden administration to undo them."
Despite the fact that the Trump administration is intent on opening the door to drilling in the 1.6 million-acre coastal plain — one of the wildest places left in the United States — it's still unclear how interested the oil industry will be. Or how readily they'll be able to finance their operations. All the major U.S. banks have said they'll no longer fund new oil and gas exploration in the Arctic.
8. Dirty Air
One week into December, the administration finalized its decision declining to enact stricter standards for regulating industrial soot emissions.
This came despite the fact that the administration's own scientists found that maintaining the current limits on tiny particles, known as PM 2.5, results in tens of thousands of early deaths each year. And despite the fact Harvard researchers found that those who have lived for decades with high levels of PM 2.5 pollution are at a greater risk of dying from COVID-19.
9. Border Wall
The incoming Biden administration has vowed to not build another foot of the border wall, but the borderlands ecosystem remains under threat as the Trump administration is continuing to push ahead.
In some cases wall builders are even attempting to speed up the work.
"That's happening from the Rio Grande Valley of Texas to Arizona's stunning Coronado National Memorial and Guadalupe Canyon, a wildlife corridor for Mexican gray wolves and endangered jaguars," NPR reported. "At $41 million a mile, the Arizona sections are the most expensive projects of the entire border wall."
In Arizona they're needlessly razing vegetation and blasting mountains for roads in remote areas to help enable construction that likely won't even take place.
10. Harming Whales and Dolphins
Trump may be leaving office, but marine mammals won't be able to rest easy. NOAA Fisheries issued a rule on Dec. 9 allowing the oil and gas industry to harm Atlantic spotted dolphins, pygmy whales, dwarf sperm whales, Bryde's whales and other marine mammals in the Gulf of Mexico while using seismic and acoustic mapping, including air guns, to gather data on resources on or below the ocean floor.
In an effort to further efforts for oil and gas drilling, nearly 200,000 beaked whales and more than 600,000 bottlenose dolphins could be "disturbed." And "pygmy and dwarf sperm whales are expected to be harassed to the point of potential injury, with a mean of 308 whales potentially harmed per year, according to the final rule," E&E News reported.
Dolphins in the Gulf of Mexico. Carey Akin / CC BY-SA 2.0
11. More Lease Sales
The Arctic isn't the only place where the rush is on to exploit public lands. On Dec. 9 the Bureau of Land Management updated an environmental assessment for a 2013 plan for leases to extract climate- and water-polluting tar sands on 2,100 acres in northeastern Utah. But then just days late it hit the pause button on the effort.
While that one may be on hold, the administration did kick off the sale of leases for oil drilling on 4,100 acres of federal land in California's Kern County on Dec. 10. The first such sale in the state in eight years could be canceled by the Biden administration and if not, would face legal challenges from environmental groups.
12. Cost-Benefit Rule
One of the administration's biggest parting gifts to industry — the "cost-benefit" rule — was finalized on Dec. 9. It would require the EPA to weigh the economic costs of air pollution regulations but not many of the health benefits that would arise from better protections.
"In other words, if reducing emissions from power plants also saves tens of thousands of lives each year by cutting soot, those 'co-benefits' should be not be counted," in the EPA's new analysis, The Washington Post explained.
The rule would be a big blow to efforts to improve public health and curb pollution.
"The only purpose in making this a regulation seems to be to provide a basis for future lawsuits to slow down or prevent future administrations from regulating," Roy Gamse, an economist and former EPA deputy assistant administrator for planning and evaluation, told Reuters.
Slowing down the Biden administration will continue to be a big part of Trump's last month in office — along with the finalization of more rule changes to add insult to injury.
Legal experts have begun mapping which rollbacks will be quick and easy to undo and those that will take sustained effort. But one thing is certain: There's a long road ahead to reverse dangerous regulations, restore scientific integrity and make up for lost ground on climate change, extinction and other cascading crises.
Reposted with permission from The Revelator.
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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. 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>
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