Large Sewage Spill in Mexico Flows North of the Border for 17 Days
A spill that originated in the Tijuana River in Mexico flowed north of the border, releasing 143 million gallons of sewage for 17 days. The spill was caused when a sewage pipe under rehabilitation ruptured at the juncture of Mexico's Tijuana and Alamar rivers. While three-quarters of the Tijuana River watershed is located in Mexico, it drains into the Pacific Ocean near Imperial Beach, California.
"It's horrible. Everybody is complaining about it. People are really upset with the smell," Imperial Beach resident Lidya Morales told FOX 5.
"This is the worst spill we've had in over a decade," Imperial Beach Mayor Serge Dedina exclaimed.
After receiving complaints about the odor, Dedina sent a written inquiry to the U.S. Section of the International Boundary and Water Commission (IBWC). The agency then provided him a report regarding the spill.
"It's a major communication failure. It's obviously something they knew for a very long time," Dedina said. "Border authorities charged with managing sewage infrastructure and reporting these spills must do better and be held accountable for this act," the mayor said as he called for the resignation of IBWC chief Edward Drusina for his poor management of cross-border wastewater issues.
"It's outrageous that we have sewage spills of this magnitude occurring under the watch of the IBWC, and it's equally outrageous there aren't proper procedures in place to notify the public when sewage releases occur," Matt O'Malley of the San Diego Coastkeeper told EcoWatch.
"This is not just an environmental failure—it's a failure to protect the public health of those who live, work and recreate along the Tijuana River, Imperial Beach and beyond. The circumstances surrounding this spill and the failure to timely release information related to it should be investigated and prevented from happening again. Officials on both sides of the border must make sewage infrastructure in the region a top priority."
Coincidentally, local South Bay beaches were already closed due to sewage run-off from the recent rainstorms. A 2012 sewage spill caused by a similar Tijuana pipe breakage, which spewed almost 3 million gallons of sewage into the Pacific, had closed Imperial Beach for several days.
A portion of the Tijuana River near the San Diego-Mexico border, full of trash and debris. Susan Murphy, KPBS
This highly polluted river has many sources and is a persistent issue, which has cost the U.S. and Mexico hundreds of millions of dollars. Since the 1990s, the U.S. and Mexico have created programs to cooperatively address the issue, including the Minute 320 accord, which established a "general framework for binational cooperation" between the countries "on transboundary issues in the Tijuana River Basin."
Some areas in Mexico, including Tijuana, currently lack sufficient sewage infrastructure and garbage collection, and some residences do not have any form of plumbing. Along with population growth, this "has resulted in large amounts of human and industrial sewage, plastics and other forms of garbage accumulating in the river," Western Washington University's Huxley College of the Environment explained. Factories in the Mexican state of Baja California also contribute to pollution in the Tijuana River, KCET reported.
The river is bisected by the current U.S.-Mexico border wall, which President Trump plans to expand. The 2008 reinforcement of this wall "razed entire mountaintops and used the earth to fill in gulches and canyons," increasing erosion and contamination issues, KCET said.
Trump’s Wall 'Would End Any Chance of Recovery for Endangered Jaguars' https://t.co/FLsdp8LJcP @EnvAm @earthisland— EcoWatch (@EcoWatch)1485563412.0
"Significant improvements in the arena of wastewater treatment in recent years have improved water quality on both sides of the border," the Surfrider Foundation said. Unfortunately, storm water still brings substantial amounts of pollution into the Tijuana River Watershed. Their "No Border Sewage Campaign," which started in 2008, seeks to address this issue through outreach, networking and education.
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The Washington Redskins will retire their controversial name and logo, the National Football League (NFL) team announced Monday.
By Alyssa Murdoch, Chrystal Mantyka-Pringle and Sapna Sharma
Summer has finally arrived in the northern reaches of Canada and Alaska, liberating hundreds of thousands of northern stream fish from their wintering habitats.
A Good News Story?<p>On the surface, the <a href="https://doi.org/10.1111/fwb.13569" target="_blank">results from our study</a> appear to provide a "good news" story. Warming temperatures were linked to higher numbers of fish, more species overall and, therefore, potentially more fishing opportunities for northerners.</p><p>Initially, we were surprised to learn that warming was increasing the distribution of cold-adapted fish. We reasoned that modest amounts of warming could lead to benefits such as increased food and winter habitat availability without reaching stressful levels for many species.</p>
Photo of Arctic grayling (left) and Dolly Varden trout (right). Alyssa Murdoch / Lilian Tran / Nunavik Research Centre and Tracey Loewen / Fisheries and Oceans Canada<p>Yet, not all fish species fared equally well. Ecologically unique northern species — those that have evolved in colder, more nutrient-poor environments, such as Arctic grayling and Dolly Varden trout — were showing declines with warming.</p>
Fish Strandings and Buried Eggs<p>Recent news headlines run the gamut for Pacific salmon — from their increased escapades <a href="https://nunatsiaq.com/stories/article/more-pacific-salmon-showing-up-in-western-arctic-waters/" target="_blank">into the Arctic</a> to <a href="https://www.juneauempire.com/news/warm-waters-across-alaska-cause-salmon-die-offs/" target="_blank">massive pre-spawning die-offs</a> in central Alaska. Similarly, results from our study revealed different outcomes for fish depending on local climatic conditions, including Pacific salmon.</p><p>We found that warmer spring and fall temperatures may be helping juvenile salmon by providing a longer and more plentiful growing season, and by supporting early egg development in northern regions that were previously too cold for survival.</p><p>In contrast, salmon declined in regions that were experiencing wetter fall conditions, pointing to an increased risk of flooding and sedimentation that could bury or dislodge incubating eggs.</p>
Headwaters of the Wind River within the largely intact Peel River watershed in northern Canada. Don Reid / Wildlife Conservation Society Canada / Author provided<p>Interestingly, we found that certain climatic combinations, such as warmer summer water temperatures with decreased summer rainfall, were important in determining where Pacific salmon could survive. Summer warming in drier watersheds led to declines, suggesting that lowered streamflows may have increased the risk of fish becoming stranded in subpar habitats that were too warm and crowded.</p>
The Fate of Northern Fisheries<p>The promise of a warmer and more accessible Arctic has attracted mounting interest in new economic opportunities, <a href="https://doi.org/10.1016/j.marpol.2019.103637" target="_blank">including fisheries</a>. As warming rates at higher latitudes are already <a href="https://www.ipcc.ch/sr15/" target="_blank">two to three times global levels</a>, it seems probable that northern biodiversity will experience dramatic shifts in the coming decades.</p><p>Despite the many unknowns surrounding the future of Pacific salmon, many fisheries are currently <a href="https://doi.org/10.1080/03632415.2017.1374251" target="_blank">thriving following warmer and more productive northern oceans</a>, and some <a href="https://doi.org/10.14430/arctic68876" target="_blank">Arctic Indigenous communities are developing new salmon fisheries</a>.</p><p>As warming continues, the commercial salmon fishing industry is poised to expand northwards, but its success will largely depend on extenuating factors such as <a href="https://www.eenews.net/stories/1060023067" target="_blank">changes to marine habitat and food sources</a> and <a href="https://www.yukon-news.com/news/promising-chinook-salmon-run-failed-to-materialize-in-the-yukon-river-panel-hears/" target="_blank">how many fish are caught during the freshwater stages of their journey</a>.</p><p>Even with the potential for increased northern biodiversity, it is important to recognize that some northern communities may be unable to adapt or may <a href="https://thenarwhal.ca/searching-for-the-yukon-rivers-missing-chinook/" target="_blank">lose individual species that are associated with important cultural values</a>.</p>
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If you get a call from a number you don't recognize, don't hit decline — it might be a contact tracer calling to let you know that someone you've been near has tested positive for the coronavirus.
Interviews With Contact Tracers<p>Contact tracing is a public health strategy that involves identifying everyone who may have been in contact with a person who has the coronavirus. Contact tracers collect information and provide guidance to help contain the transmission of disease.</p><p>It's been used during outbreaks of sexually transmitted infections (STIs), Ebola, measles, and now the coronavirus that causes COVID-19.</p><p>It starts when the local department of health gets a report of a confirmed case of the coronavirus in its community and gives that person a call. The contact tracer usually provides information on how to isolate and when to get treatment, then tries to figure out who else the person may have exposed.</p><p>"We ask who they've been in contact with in the 48 hours prior to symptom onset, or 2 days before the date of their positive test if they don't have symptoms," said <a href="https://case.edu/medicine/healthintegration/people/heidi-gullett" target="_blank">Dr. Heidi Gullett</a>, associate director of the Center for Community Health Integration at the Case Western Reserve University School of Medicine and medical director of the Cuyahoga County Board of Health in Ohio.</p>
“You’ve Been Exposed”<p>After the case interview, contact tracers will get to work calling the folks who may have been exposed to the coronavirus by the person who tested positive.</p><p>"We give them recommendations about quarantining or isolating, getting tested, and what to do if they become sick. If they're not already sick, we still want them to self-quarantine so that they don't spread the disease to anyone else if they were to become sick," said Labus.</p><p>Generally, the contact tracer won't ask for additional contacts unless they happen to call someone who is sick or has a confirmed case of the virus. They will help ensure the contact has the resources they need to isolate themselves, if necessary. The contact tracer may continue to stay in touch with that person over the next 14 days.</p><p>"We follow the percentage of people that were contacts, then converted into being actual cases of the virus. It's an important marker to help us understand what kind of transmission happens in our community and how to control the virus," said Gullett.</p>
Why You Should Participate (and What Happens If You Don’t)<p>A <a href="https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(20)30457-6/fulltext" target="_blank">Lancet study</a> from June 16, which looked at data from more than 40,000 people, found that COVID-19 transmission could be reduced by 64 percent through isolating those who have the coronavirus, quarantining their household, and contacting the people they may have exposed.</p><p>The combination strategy was significantly more effective than mass random testing or just isolating the sick person and members of their household.</p><p>However, contact tracing is only as effective as people's willingness to participate, and a small number of people who've contracted the coronavirus or were potentially exposed are reluctant to talk.</p><p>"Contact tracers have all been hung up on, cussed at, yelled at," said Gullet.</p><p>The hesitation to talk to contact tracers often stems from concerns over privacy — a serious issue in healthcare.</p>
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