Environmental issues in Toronto

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Environmental issues in Toronto encompasses all those concerns and opportunities presented by the environment of Toronto. Many are harmful effects, such as the pollution of air and water, while others are factors influenced by urban infrastructures such as highways and public transportation services. [1] As a result of the city's large population, substantial waste is produced annually.

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Polluted air can be found throughout the city with noticeable hot spots including the Scarborough Town Centre, Highway 427 intersecting Highway 401, and the downtown area. [1] This leaves inhabitants of these areas at greater risk of the development of respiratory issues and other health conditions. [2] Water pollution from the city impacts the nearby environment as well. Sewage and harmful emissions have led to the presence of contaminants such as mercury, lead, and flame retardants within the waters of Lake Ontario. [3] There is evidence that harmful emissions from the city have lessened over the years as a result of local and Ontario based initiatives. [4] In 2014, the city of Toronto celebrated a year without a smog alert for the first time in 20 years. Improvements to air quality have been linked to the closure of coal-fired power plants and the reduced demand for electricity in the city. [5] Initiatives such as the Toronto Environmental Alliance and Greening Greater Toronto continue to address environmental issues in the city.

Air pollution

It is estimated by Toronto Public Health that air pollution in Toronto from all sources currently causes 1,300 premature deaths and 3,550 hospitalizations within the city annually. [6] Over half of Toronto's air pollution is emitted within the city's boundaries with the largest local source being traffic including all types of on-road vehicles. The second largest source of emissions affecting local air quality is fuels used to heat and cool homes and businesses. [7]

Research carried out at the University of Toronto has shown noticeable air pollution hot spots near highways and major intersections that can have three to four times the city's average amount of ultrafine particles from by vehicle exhausts. [6] One of the main emissions from vehicles is NOx (nitrogen oxide) which transforms in the air to NO2 (nitrogen dioxide), which is one of the most common pollutants consistently linked to health impacts. [6] High concentrations of NOx occur along Toronto's major highways including Highway 427, Highway 401, Highway 400, the Don Valley Parkway, and the Gardiner Expressway, as well as the downtown area. [1] [8] These gases contribute to the formation of smog, ozone, and acid rain.

Smog

Smog alerts are issued by Toronto Public Health when air conditions in the city are poor enough to be harmful to a resident's health. The alerts are given in order to encourage residents to take precautions in order to protect their health, usually by limiting the amount of time spent outdoors in locations of heavy smog. [9]

A study led by the University of Toronto found remarkable improvements in regional air pollution in the city since 2000. [10] For comparison, there were 53 smog days in 2005, and in 2014 and 2015 there were no recorded smog days. [5] Concentrations of volatile organic compounds (VOCs) and nitrogen oxides, two precursor components of smog, have been steadily decreasing in the city. A 2006-2016 analysis has shown that common air pollutant concentrations have dropped, and a 31% decrease in fine particulate matter and a 42% decrease in nitrogen dioxide has been noted. [5] However, ozone, another smog component, continues to persist at levels that violate Canada-wide standards. [10] Improvements to smog and air pollution as a result of lessened emissions have been noticed throughout the city. Experts from the Ministry of Environment and Climate Change have linked these lessened emissions to the closure of coal-fired generating stations, the lessened demand for electricity throughout the city, and initiatives such as Drive Clean. [5]

The weather plays an important role in the formation of smog as well. Hot summers contribute to the increased use of electricity throughout the city, and to the warm and dry atmosphere. Despite lessened emissions in the city, smog remains a possibility as warm temperatures allow for pollutants to react in the atmosphere more quickly. This leads to the possibility of high ozone levels despite the drop in pollutants which commonly lead to the production of ozone. In the hot, dry summer of 2012, some of the highest summertime ozone concentrations were recorded within the city. With these ozone concentrations came eight smog advisories despite the consistently lower ozone levels witnessed in the years leading up to 2012. [10]

Air toxics

Air toxics, also known as toxic air pollutants, are pollutants in which long term exposure may cause serious health effects such as cancer, reproductive effects, birth defects, or other harmful environment and ecological effects. In Toronto, the overall burden of illness from air toxics is unknown; however, local data suggests that traces of benzene, tetrachloroethylene, and lead are present in Toronto's air, posing a health risk in areas of high concentration. [11]

Regulations are currently in place to reduce harmful emissions from air toxics. Under the city of Toronto's Environmental Reporting and Disclosure Bylaw of 2011, the use of tetrachloroethylene, also known as perchloroethylene or PERC, is now heavily tracked, requiring owners of dry-cleaning facilities to record detailed accounts of how it is used and recycled. [12] This is significant as PERC has been commonly used at dry cleaning facilities, and many owners have violated regulations in the past when using this toxic chemical. [13] According to Toronto's Medical Officer of Health, PERC ranks among the top eight chemicals of highest concern in the city. [14]

Pollution from industrial sources

Industrial sources are a major contributor to the release of pollutants within Toronto. Sewage incinerators and other treatment plants across the city are often a large source of harmful pollutants such as nitrogen oxide, chromium, mercury, and carbon dioxide (CO2). [15] [16] The Highland Creek Treatment Plant treats all of Scarborough's sewage and serves nearly 500,000 people. [17] The plant is one of Toronto's largest polluters, emitting over 38 tonnes of greenhouse gas emissions (GHG) every day as a result of its old incinerator. [18] The city is currently debating options on how to best upgrade the facility. Possibilities include the continued burning of biomass on site by upgrading the nearly 40-year-old incinerator, or transporting the biomass off site to be stored elsewhere. [19]

Local businesses also contribute heavily to the amount of pollutants produced from industrial sources. The National Pollutant Release Inventory (NPRI) investigates and reports upon the release of pollutants across Canada. The NPRI currently does not track small and medium-sized facilities such as dry cleaners, auto repair shops, and printing companies, which represent the majority of facilities in Toronto. [6] This has caused Toronto Public Health to conclude that harmful illnesses attributed to industrial processes in the city are underestimated. [6]

To address this, Toronto Public Health has led the development of an Environmental Reporting and Disclosure Bylaw that requires local businesses to track and report on the manufacture, process, use and release of 25 priority substances. [12] As part of the bylaw, the program ChemTRAC was created, which helps businesses identify major sources of chemicals in their facilities and analyses their releases. ChemTRAC is now fully operational and is intended to reduce pollution from industrial and commercial sources by increasing public awareness. [20]

Water pollution

Researchers have found materials such as polychlorinated biphenyls (PCBs), flame retardants, and combustion pollutants in Lake Ontario. [3] Pharmaceuticals, harsh cleaning products and other pollutants are washed down household drains, leaving a noticeable effect on the amount of pollutants found within Lake Ontario. [21] [22] Many Toronto businesses and institutions dispose of harsh cleaning chemicals, degreasers, and heavy metals through the sewer system. [22] Toronto Water can remove some of these contaminants when the wastewater is treated at one of their treatment plants; however, many toxic chemicals remain and are often released into Lake Ontario. [22] In 2011, over 7 tonnes of cadmium, mercury, lead, and nickel were released into Lake Ontario from Toronto facilities. [22]

A study conducted in 2009 and published in 2014 by the University of Toronto and Environment Canada sampled Toronto's tributaries and treated wastewater for PCBs, flame retardants (including polybrominated diphenyl ethers or PBDEs), polycyclic aromatic hydrocarbons (PAHs) and polycyclic musks (PCMs). The study found that Toronto sends an estimated 5,000 pounds of PAHs, 1,500 pounds of PCMs, 55 pounds of PCBs, and 40 pounds of PBDEs annually to the nearshore of Lake Ontario, approximately 25 miles out into the lake. [3] [23] Exposure to PCBs can lead to an array of serious health effects including cancer and hormone disruption. [24]

Waste management

The Green Lane landfill handles waste produced by Toronto. The city purchased the landfill in April 2007, and it became the city's primary waste disposal facility on January 1, 2011. [25] The City of Toronto produced nearly 1,000,000 tonnes of waste in 2013, with each Torontonian generating around 15 pounds of waste per week. [25] With a growing population and limited space at the landfill, the city' s current waste management system has been deemed unsustainable. [25]

The Green Lane Landfill is expected to last until 2029; however, long term waste strategies are already being discussed by the City of Toronto. The Long Term Waste Strategy was approved by the City Council on July 15, 2016, and seeks to guide waste management in Toronto for the next 30–50 years. [26] The strategy will focus on reducing waste and minimizing the amount sent to landfills by emphasizing community engagement and encouraging the prevention of waste. [26]

Toronto currently does not have a long-term plan to move away from landfills, but is instead focusing on efforts to reduce overall garbage through waste diversion. [26]

Initiatives and environmental groups

Many environmental groups in Toronto have been working towards addressing the multitude of environmental issues in Toronto. The Toronto Environmental Alliance (TEA) has been campaigning locally since 1988 to address urban environmental issues. TEA engages with City Councillors and has influenced policy shift towards environmentally sustainable programs. In February 2017, TEA convinced the City Council to investigate why waste diversion rates are lower in areas of privatized garbage collection. [27]

Greening Greater Toronto works to lower greenhouse gas emissions, reduce waste, improve waste management, and achieve cleaner air and water in the city of Toronto and the Greater Toronto Area. [28] Greening Greater Toronto is working towards achieving a corporate green procurement program, and a region-wide plan accelerating commercial building energy efficiency in the Greater Toronto Area. [28]

The Toronto and Region Conservation Authority's (TRCA) vision is for a cleaner, greener, and healthier Toronto. It provides protection and enhancement of natural resources, environmental information and advice to promote good land management practices, and community action on environmental projects, among other projects. [29]

Related Research Articles

<span class="mw-page-title-main">Pollutant</span> Substance or energy damaging to the environment

A pollutant or novel entity is a substance or energy introduced into the environment that has undesired effects, or adversely affects the usefulness of a resource. These can be both naturally forming or anthropogenic in origin. Pollutants result in environmental pollution or become public health concerns when they reach a concentration high enough to have significant negative impacts.

<span class="mw-page-title-main">Pollution</span> Introduction of contaminants that cause adverse change

Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of any substance or energy. Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants.

<span class="mw-page-title-main">Smog</span> Smoke-like, fog-like air pollutions

Smog, or smoke fog, is a type of intense air pollution. The word "smog" was coined in the early 20th century, and is a portmanteau of the words smoke and fog to refer to smoky fog due to its opacity, and odor. The word was then intended to refer to what was sometimes known as pea soup fog, a familiar and serious problem in London from the 19th century to the mid-20th century, where it was commonly known as a London particular or London fog. This kind of visible air pollution is composed of nitrogen oxides, sulfur oxide, ozone, smoke and other particulates. Man-made smog is derived from coal combustion emissions, vehicular emissions, industrial emissions, forest and agricultural fires and photochemical reactions of these emissions.

<span class="mw-page-title-main">Hazardous waste</span> Ignitable, reactive, corrosive and/or toxic unwanted or unusable materials

Hazardous waste is waste that has substantial or potential threats to public health or the environment. Hazardous waste is a type of dangerous goods. They usually have one or more of the following hazardous traits: ignitability, reactivity, corrosivity, toxicity. Listed hazardous wastes are materials specifically listed by regulatory authorities as hazardous wastes which are from non-specific sources, specific sources, or discarded chemical products. Hazardous wastes may be found in different physical states such as gaseous, liquids, or solids. A hazardous waste is a special type of waste because it cannot be disposed of by common means like other by-products of our everyday lives. Depending on the physical state of the waste, treatment and solidification processes might be required.

<span class="mw-page-title-main">Incineration</span> Waste treatment process

Incineration is a waste treatment process that involves the combustion of substances contained in waste materials. Industrial plants for waste incineration are commonly referred to as waste-to-energy facilities. Incineration and other high-temperature waste treatment systems are described as "thermal treatment". Incineration of waste materials converts the waste into ash, flue gas and heat. The ash is mostly formed by the inorganic constituents of the waste and may take the form of solid lumps or particulates carried by the flue gas. The flue gases must be cleaned of gaseous and particulate pollutants before they are dispersed into the atmosphere. In some cases, the heat that is generated by incineration can be used to generate electric power.

<span class="mw-page-title-main">Toxic waste</span> Any unwanted material which can cause harm

Toxic waste is any unwanted material in all forms that can cause harm. Mostly generated by industry, consumer products like televisions, computers, and phones contain toxic chemicals that can pollute the air and contaminate soil and water. Disposing of such waste is a major public health issue.

<span class="mw-page-title-main">Exhaust gas</span> Gases emitted as a result of fuel reactions in combustion engines

Exhaust gas or flue gas is emitted as a result of the combustion of fuels such as natural gas, gasoline (petrol), diesel fuel, fuel oil, biodiesel blends, or coal. According to the type of engine, it is discharged into the atmosphere through an exhaust pipe, flue gas stack, or propelling nozzle. It often disperses downwind in a pattern called an exhaust plume.

<span class="mw-page-title-main">Waste-to-energy plant</span> Building that incinerates unusable garbage

A waste-to-energy plant is a waste management facility that combusts wastes to produce electricity. This type of power plant is sometimes called a trash-to-energy, municipal waste incineration, energy recovery, or resource recovery plant.

<span class="mw-page-title-main">Ministry of Environment (South Korea)</span>

The Ministry of Environment is the South Korea branch of government charged with environmental protection. In addition to enforcing regulations and sponsoring ecological research, the Ministry manages the national parks of South Korea. Its headquarters is in Sejong City.

<span class="mw-page-title-main">Air pollution</span> Presence of dangerous substances in the atmosphere

Air pollution is the contamination of air due to the presence of substances called pollutants in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. It is also the contamination of the indoor or outdoor environment either by chemical, physical, or biological agents that alters the natural features of the atmosphere. There are many different types of air pollutants, such as gases, particulates, and biological molecules. Air pollution can cause diseases, allergies, and even death to humans; it can also cause harm to other living organisms such as animals and crops, and may damage the natural environment or built environment. Air pollution can be caused by both human activities and natural phenomena.

Title 40 is a part of the United States Code of Federal Regulations. Title 40 arranges mainly environmental regulations that were promulgated by the US Environmental Protection Agency (EPA), based on the provisions of United States laws. Parts of the regulation may be updated annually on July 1.

<span class="mw-page-title-main">Pollution in California</span> Overview of pollution in the U.S. state of California

Pollution in California relates to the degree of pollution in the air, water, and land of the U.S. state of California. Pollution is defined as the addition of any substance or any form of energy to the environment at a faster rate than it can be dispersed, diluted, decomposed, recycled, or stored in some harmless form. The combination of three main factors is the cause of notable unhealthy levels of air pollution in California: the activities of over 39 million people, a mountainous terrain that traps pollution, and a warm climate that helps form ozone and other pollutants. Eight of the ten cities in the US with the highest year-round concentration of particulate matter between 2013 and 2015 were in California, and seven out of the ten cities in the US with the worst ozone pollution were also in California. Studies show that pollutants prevalent in California are linked to several health issues, including asthma, lung cancer, birth complications, and premature death. In 2016, Bakersfield, California recorded the highest level of airborne pollutants of any city in the United States.

<span class="mw-page-title-main">Environmental effects of paper</span> Overview about the environmental effects of the paper production industry

The environmental effects of paper are significant, which has led to changes in industry and behaviour at both business and personal levels. With the use of modern technology such as the printing press and the highly mechanized harvesting of wood, disposable paper became a relatively cheap commodity, which led to a high level of consumption and waste. The rise in global environmental issues such as air and water pollution, climate change, overflowing landfills and clearcutting have all lead to increased government regulations. There is now a trend towards sustainability in the pulp and paper industry as it moves to reduce clear cutting, water use, greenhouse gas emissions, fossil fuel consumption and clean up its influence on local water supplies and air pollution.

<span class="mw-page-title-main">Air pollution in Mexico City</span> Poor quality of air in the capital and largest city of Mexico

Air Pollution in Mexico City has been of concern to the city's population and health officials for decades. In the 20th century, Mexico City's population rapidly increased as industrialization brought thousands of migrants from all over the world. Such a rapid and unexpected growth led to the UN declaring Mexico City as the most polluted city in the world in 1992. This was partly due to Mexico City's high altitude, which causes its oxygen levels to be 25% lower. Carbon-based fuels also do not combust completely. Other factors include the proliferation of vehicles, rapid industrial growth, and the population boom. The Mexican government has several active plans to reduce emission levels which require citizen participation, vehicular restrictions, increase of green areas, and expanded bicycle accessibility.

<span class="mw-page-title-main">Pollution in Canada</span> Overview of pollution in Canada

Pollution is an environmental issue in Canada. It has posed health risks to the Canadian population and is an area of concern for Canadian lawmakers. Air, water and soil pollution as well as the associated health effects are prominent points of contention in modern Canadian society.

<span class="mw-page-title-main">Wheelabrator Incinerator</span> Waste-to-energy incinerator in Baltimore, Maryland, US

Wheelabrator Baltimore is a waste-to-energy incinerator located in the Westport neighborhood of Baltimore, Maryland and is operated by Wheelabrator Technologies, a subsidiary of Energy Capital Partners. It has an electric generation capacity of 64.5 megawatts. On October 2, 2018, ECP announced the agreement to sell Wheelabrator Technologies to Macquarie Infrastructure Partners, a subsidiary of Macquarie Group.

Greenaction for Health and Environmental Justice, formed in 1997, is a multiracial grassroots organization based in San Francisco that works with low-income and working class urban, rural, and indigenous communities. It runs campaigns in the United States to build grassroots networks, and advocate for social justice.

Emmell's Septic Landfill (ESL) is located at 128 Zurich Ave, Galloway Township, New Jersey and takes up about 38 acres of space. The landfill was in operation from 1967 until 1979. ESL disposed of liquid and solid waste including many chemicals such as volatile organic compounds (VOCs), Polychlorinated Biphenyls (PCBs), Trichloroethene and Vinyl chloride which all had their own effect on the environment and community. These chemicals affected the groundwater required millions of dollars to reconstruct the groundwater pathways and provide clean water to residents. The landfill holds a Hazardous Ranking Score of a 50/100, qualifying for the Superfund National Priority List. In August 1999, the state acknowledged the site's contamination and held town meetings and provided research upon the site such as groundwater samples. In July 1997, a sitewide investigation was called upon by the United States Environmental Protection Agency. In total the clean up was estimated to cost $5 million to fund this superfund site, and a grant of $3.9 million was given by the Federal Government under the Recovery Act Funding (Previti). Today, the project is still ongoing however, greatly improved since the landfill was discovered.

References

  1. 1 2 3 Oved, Marco Chown. (April 21, 2015) "Air quality map shows Toronto's most polluted neighbourhoods." The Star.
  2. ↑ Perrotta, K. (1999). "Environmental Health Issues in The City of Toronto". Toronto Public Health. 5-27.
  3. 1 2 3 Melymuk, L.; Robson, M.; Csiszar, S.A.; Helm, P.A.; Kaltenecker, G.; Backus, S.; Bradley, L.; Gilbert, B.; Blanchard, P.; Jantunen, L.; and Diamond, ML. (2014) "From the city to the lake: loadings of PCBs, PBDes, PAHs, and PCMs from Toronto to Lake Ontario." Environmental Science and Technology (48)7: 3732-41
  4. ↑ Chubb, C. (August 17, 2015). "Breathe easier: Smog-free days the norm as city's air quality improves." City News.
  5. 1 2 3 4 Artuso, A. (August 21, 2016) "The heat's been on - but the smog has not." Toronto Sun.
  6. 1 2 3 4 5 Gower, Stephanie; Macfarlane, R.; Belmont, M.; Bassil, K.; Campbell, M. (April 2014) "Path to Healthier Air: Toronto Air Pollution Burden of Illness Update. Technical Report". Toronto Public Health.
  7. ↑ "Local Air Quality Studies". City of Toronto Reports, Policies, Plans and Research, retrieved on March 28th 2017.
  8. ↑ McIntosh, Emma. "The fight to crack down on air pollution from Toronto's traffic has stalled". The Narwhal. Retrieved 2024-01-22.
  9. ↑ "Air Pollution and Health". City of Toronto Air Pollution and Health. Retrieved on March 28th 2017.
  10. 1 2 3 Allen, Kate. (August 21, 2014) "Toronto is smog free for the first summer in decades. But why?" The Star.
  11. ↑ Gower, Stephanie; Macfarlane, Ronald. (March 2014) "Health Assessment for the Cumulative Air Quality Modelling Study - Wards 5 and 6 including the South Etobicoke and Lakeshore Neighbourhoods." Toronto Public Health.
  12. 1 2 "Environmental Reporting and Disclosure Bylaw (Municipal Code Chapter 423) Guide to Reporting". (January 2013) Toronto Public Health, City of Toronto.
  13. ↑ Blatchford, Andy. (February 2011) "Toxic dry-cleaning chemical is Canada's top eco-villain." The Globe and Mail.
  14. ↑ Marshall, Heather. (May 2015) "Spotlight on PERC." Toronto Environmental Alliance.
  15. ↑ Marshall, Heather. (January 2016) "Air Pollution from Burning Sewage." Toronto Environmental Alliance.
  16. ↑ "Health Impact Assessment of Biosolids Management Plan for Highland Creek Treatment Plant." (October 2015) Medical Officer of Health, City of Toronto.
  17. ↑ "Highland Creek Treatment Plant Biosolids Management: Newsletter #1." City of Toronto. Retrieved on May 28th, 2017.
  18. ↑ "Sewage incineration at Highland Creek Treatment Plant." Toronto Environmental Alliance. Retrieved on March 28th, 2017.
  19. ↑ Hasham, Alyshah. (March 2013) "Landfill or incinerator: What's the future of Toronto's trash?" The Star.
  20. ↑ "ChemTRAC". City of Toronto Environmental Health. Retrieved on March 28th, 2017.
  21. ↑ "What not to flush: understand what not to flush or pour down your drains." City of Toronto Environmental Monitoring and Protection. Retrieved on March 28th, 2017.
  22. 1 2 3 4 "Water Pollution in Toronto." Toronto Environmental Alliance. Retrieved on March 28th, 2017.
  23. ↑ Bienkowski, Brian. (April 2014) "Chemicals take various routes to Great Lakes." Environmental Health News.
  24. ↑ "What are the Human Health Effects of PCBs?" Clearwater. Retrieved on March 28th, 2017
  25. 1 2 3 "Why Do We Need a Waste Strategy?" All About Toronto Waste, City of Toronto. Retrieved on March 28th, 2017.
  26. 1 2 3 "City Council approves new Waste Strategy." Long Term Waste Strategy, City of Toronto. Retrieved on March 28th, 2017.
  27. ↑ "TEA Convinces Council to Get the Facts on Waste Diversion." (February 2017) Toronto Environmental Alliance. Retrieved on March 28th, 2017.
  28. 1 2 "About us." Greening Greater Toronto. Retrieved on March 28th, 2017.
  29. ↑ "Toronto and Region Conservation Authority - TRCA." Archived 2016-08-10 at the Wayback Machine Toronto Charities and Non-Profits. Retrieved on March 28th, 2017.
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