Conserve freshwater and restore water cycles at multiple scales using regenerative practices, collaborative management, and innovative technologies.
Water is essential to life on Earth. More than 70 percent of every cell inside every living organism is water. It makes up half our body weight and is crucial to maintaining healthy organs, reducing body temperature, and processing waste. Water is essential to regeneration. But water is in trouble. Only 3 percent of all water on Earth is freshwater, and two-thirds of that is locked up in glaciers. Competing demands, aquifer depletion, drought, and pollution are stressing the remaining third. Global water demand is projected to outstrip supply by 40 percent by 2030. Agriculture uses 70 percent of all freshwater. Water stress will grow as the effects of climate change become more severe. Solutions must be diverse, collaborative, and work at multiple scales. A crucial one is regenerative agriculture, which can improve water cycles, keep water clean, and build resilience to extreme weather. This documentary about the water cycle and soil health shows how water makes climate.
Almost 9% of Canada’s total area is covered with freshwater, with 2 million lakes, myriad wetlands and rivers, and a quarter of the world’s peatlands (see our Peatlands page). Wetlands are our most effective land-based ecosystem for addressing climate change. In parts of southwestern Ontario over 90% of the original wetlands are gone, among the highest recorded rate of loss anywhere on Earth. A wetland as small as two hectares can retain water runoff from an area 70 times its size, significantly reducing flood damage.
The five Great Lakes contain about 18% of all the world’s fresh surface water. Over 85% of Ontarians rely on municipal drinking water, half from Lake Ontario, and the rest from other lakes, rivers and wells. Despite improvements, there are still First Nations communities with drinking water advisories. Besides climate change, additional stressors are development, pollution and population growth, exacerbated by Canadians’ prolific use of water per capita. Canada recently launched a new water agency with initiatives to improve freshwater management, which joins a robust network of civil society organizations working on water.
Learn about the multiple challenges to freshwater and their impacts. Roughly 25% of the world’s population is experiencing extreme water stress. Approximately two billion people do not have access to clean drinking water, and 3.6 billion lack adequate sanitation. More than 800,00 people die each year globally from unsafe water. Chemical runoff from farms is a significant source of water pollution. While drought, erosion, and contamination impact surface water sources, more than 90 percent of all freshwater globally is found below our feet as groundwater. These subsurface sources are suffering from depletion, pollution, lack of natural recharge, and mining for use in hydraulic fracking. Although freshwater is abundant in most of Canada, it faces significant pressures from drinking water supply, development, irrigation, agriculture, industrial uses, and fossil fuel extraction, as well as ecosystem needs. Major challenges include contamination by PFAS “forever” chemicals, nuclear waste, road salt, as well as the bottling of groundwater from municipal aquifers. In parts of Canada wildfires, sudden downpours, melting glaciers, reduced snowcover, and ageing infrastructure compound local water crises, such as in Calgary.
Surface water pollution. Preventing the contamination and depletion of our lakes, rivers and groundwater sources is an important first step in protecting drinking water. Canada’s water quality is most affected by industrial effluent, oil sands and mining tailings, agricultural runoff, and municipal sewage pollution. The danger posed by chemicals or pathogens depends on their amount, toxicity, and distance from municipal water supply. Chemical threats include solvents, fuels, fertilizers, pesticides, plastics and road salt. Pathogens arise from human and animal waste. An emerging threat to water quality is cyber security attacks on treatment plants.
The Clean Water Act of 2006 arose from the E. coli outbreak in Walkerton, Ontario, which was a warning to ensure good drinking water treatment and oversight. Contaminants bioaccumulate in the environment and humans across generations. Three generations of Anishinaabe people in Grassy Narrows, Ontario are still being poisoned from mercury dumped upstream by a paper mill two generations ago. Increases in toxic algae blooms in Canadian lakes and coastal water have heightened risks to human health, such as those in Lake Erie. Excessive winter use of road salt is raising salinity levels in rivers and the Great Lakes all year round, where it’s having a devastating impact on freshwater species. A further source of contamination is pipeline leaks; Line 5 has leaked 29 times. The Experimental Lakes Area has studied the effects of pollution on 58 small lakes in northwestern Ontario for over half a century.
Groundwater depletion and pollution. The rate of global groundwater depletion doubled between 1960 and 2000, affecting millions of people. In the US, groundwater depletion threatens to exhaust aquifers across the nation. Groundwater is effectively non-renewable, with just 6% of groundwater around the world replenished and renewed within 50 years. Surface water from rain and melting snow that makes its way underground is often polluted. A main source of contamination is agricultural chemicals, including pesticides. Other sources include storage tanks, septic systems, landfills, and hazardous waste.
More than a third of Canadians rely on public and private groundwater wells as their primary source of water. The western provinces of Canada increasingly struggle with scarcity because of disruption of the water cycle by drought, fires, and extreme weather, leading to natural depletion of aquifers. The mining of Ontario gravel and aggregates for concrete and the mining of groundwater aquifers for the bottled water industry have significant effects on human and environmental health in local bioregions and around the world.
Antibiotics and sewage in water supplies. A main agricultural contributor to water pollution is intensive livestock operations.Antibiotics used to treat and prevent livestock diseases in factory farms contaminate drinking water that can sicken humans. The FAO calls the flow of these drugs, chemicals, and pathogens into our water supply a crisis. For most pharmaceuticals, there are no Canadian environmental standards for water. Excreted caffeine and human pharmaceuticals, such as birth control pills, antidepressants and anti-anxiety medications are affecting many species, including humans. The pharmaceutical contamination of our water can also indirectly contribute to antibiotic resistance.
Dams and hydroelectricity. Impoundment dams built for reservoirs and water-diversion systems block migration routes for fish and disrupt habitats. They can have a significant impact on water quality. Canada has more than 15,000 dams, especially in Quebec, Ontario and British Columbia, of which over 1,100 are “large” dams used for hydroelectric generation with high greenhouse gas emissions. Canada is the world’s second largest hydroelectric power producer, but climate change will affect the potential for hydropower production across the country. The dams are owned by governments, municipalities, electric utilities, mining companies, irrigation districts and private individuals.
Draining and channelling. Human activities can change how much water reaches a stream, divert flow through manmade channels, or alter stream shape and location, reducing water quantity. The draining of wetlands has multiple negative impacts, as shown in this infographic from eastern Canada. In Toronto most creeks have been filled in or channelled, and many were buried to facilitate city development. They became “lost rivers,” while others like the Don River that are above ground, have issues with flooding, due to the increase of extreme weather events.
Flood risk. Increasingly severe storms with intense rainfall cause problems, especially in highly developed and paved urban areas. The built environment systems overflow with the volume of stormwater causing flash flooding, which destroys property, infrastructure and nature. In large cities like Toronto, the challenge is to redesign and install new infrastructure to protect roadways, buildings and homes from damage and surface water from contamination. For historical reasons, many older sewer pipes carry both stormwater overflow and sewage. In extreme storms, the two flows combine, discharging the untreated wastewater mixed with stormwater directly into the city and the lake.
Erosion. Many land use activities result in soil erosion, causing a decline in water quantity and quality. The combined effects of erosion from intensive tillage practices, wind, and rainfall and runoff contribute to diminished soil health for agriculture. Overgrazing by livestock can lead to the denuding of vegetative cover, causing erosion of topsoil and gully formation and creating opportunities for invasive plant species. The Great Lakes face shoreline erosion challenges from lack of ice and stronger waves, as seen in the Maitland Valley (Lake Huron) and the Scarborough Bluffs (Lake Ontario). Erosion from stormwater and trampling affect the health of creek banks, streams and water infrastructure in Toronto’s ravines.
Deforestation. Trees are critical to many watersheds. When forests are removed, watersheds are unable to properly filter water and regulate the water supply for the human and animal communities that depend on them. Risks of floods increase without forests to hold soils in place. Canada has a growing and underreported carbon debt from clearcut logging of the boreal forest. In the 1700s and 1800s much of southern Ontario was deforested for shipbuilding, agriculture, settlement and export. And since 2000, Ontario has lost over 8% of its current forest cover. Ontario’s Greenbelt region is home to 1200 square kilometres of protected woodlands and old-growth forests, which are now under threat by urban sprawl as well as by invasive insects like beetles and moths.
Invasive species. Freshwater ecosystems can be disrupted in various ways by non-native animals and plants. In the American West, invasive tamarisk trees crowd out native plants and lower water tables with their long taproots. In the absence of natural predators, fast-growing and stronger invasives crowd out native species, ultimately affecting the water cycle. Wetlands are being damaged by invasive plants such as purple loosestrife, and invasive phragmites are replacing native cattails. Invasive fish and invertebrates in the Great Lakes region include jumping Asian carp, sea lampreys and zebra mussels, which arrived in the ballast of cargo ships.
Loss of biodiversity. Global biodiversity is being lost as a consequence of the degradation of freshwater ecosystems, mainly due to pollution and habitat destruction, creating crisis conditions that have drawn the attention of global conservation organizations and the UN. Genetic diversity in monitored freshwater vertebrate populations have declined 84% since 1970. Expanding development threatens patches of natural habitat in woodlots, wetlands, and hedgerows, such as those in Ontario’s Greenbelt. These provide essential ‘stepping stones’ between natural areas, making up Ontario’s migration superhighways for wildlife, including billions of birds that depend on it for their annual migration.
Climate change. Water, ice and climate change are inextricably linked. Global warming is causing multiple impacts on freshwater supplies, including devastating floods and droughts. About 50 percent of freshwater fish species are threatened by climate change globally, mainly as a consequence of rising temperatures. Over 90% of “natural” disasters globally are related to weather and water, placing a huge burden on people, communities, economies and ecosystems. In Canada costs attributed to climate change are escalating from the results of longer fire seasons, reduced snow cover and sea ice, and high water levels, as in the Great Lakes and St Lawrence basin. For over 50 years, the Experimental Lakes Project in northwestern Ontario has been accumulating detailed climate data, while investigating freshwater threats, including algal blooms, acid rain, mercury, pharmaceuticals, oil spills and microplastics.
Learn what you can do to mitigate the freshwater crisis where you live. For indoor use, each Canadian uses 87 US gallons (330 litres) of freshwater each day, compared with 80-100 US gallons of freshwater for each American. There are many strategies for conserving freshwater at home and in your neighbourhood.
Reduce water use. The simplest strategy is to reduce the amount of water you use on a daily basis. The City of Toronto lists tips on how to use water more efficiently inside and outside your home. This room-by-room guide will help you cut water use. Install low-flow toilets and use water-efficient appliances. Keep an eye out for leaks that may be costing you water.
Reduce toxic chemicals. Choose soaps, hair care and cleaning products with non-toxic ingredients and better health impacts. For laundry, filter out microfibers when washing synthetics and blends to keep microplastics out of the water. Wash full loads with eco-friendly products or soap berries. Consider using a bidet instead of toilet paper, which can contain ‘forever chemicals’.
Recycle wastewater. Recycling wastewater can help reduce the amount of freshwater used. This overview explains important considerations for water reuse. Try these ideas to reuse water at home. Skip washing your car, or go to a commercial car wash that uses water efficient sprays and prevents pollutant runoff from entering storm sewers. Greywater systems can cut water use at home significantly, but they have their challenges.
Harvest rainwater. Water that falls from the sky can be harvested in many different ways for use in and around your home. The simplest systems use rain barrels to collect rainwater. Rain chains and downspouts guide water away from building foundations into gardens. A more comprehensive system was designed specifically for drier climates but can be used almost anywhere, as shown in this introductory video. This list of considerations can help with planning, and in Ontario, check these guidelines.
Conserve water in your garden. There are many techniques for conserving water in a garden, including using mulch, and choosing the right time of day, the right amount of water, and the right plants. Toronto has information about water efficient and drought-tolerant landscaping. When planning, consider alternatives to lawns or use these garden templates using native plants for various settings.
Prevent ground contamination. Reduce or eliminate the use of pesticides and fertilizers, which get into our water. Take unused paints, cleaners, pesticides and pool chemicals to a hazardous waste facility or call the Toxic Taxi if in Toronto for pickup. Clean up dog poop to keep it out of storm sewers during a rainstorm and use alternatives to road salt for winter ice.
Reduce flood risk. Protect yourself indoors and out to manage rain and snowmelt to prevent basement flooding. Consider these stormwater solutions, including permeable surfaces so that water can percolate into aquifers rather than becoming runoff. Learn about your local area from your conservation authority. For example, the Toronto and Region Conservation Authority maintains flood plain maps and has information to help you know your risks and be prepared.
Adopt new water conservation technologies. Smart water technology includes leak detectors, shut-off devices, timers, new showers and faucets, and monitoring tools. Look for apps and devices that can help you reduce water usage and save money on your water bill. On a larger scale, Canada has nearly 600 innovative groups focused on water technologies for global and local water issues.
Use alternatives to bottled water. Fill reusable water bottles with tap water whenever possible to save money, avoid single-use plastics, and protect water sources and human health. Adopt ‘no bottled water’ policies in workplaces and schools, support drinking fountains in your community, and free your events from bottled water. For summer events in Toronto, use the City HTO To Go Water Trailers.
Reduce the amount of water in the food you eat. Everything you eat has a water footprint, and some food products use much more water to produce than others. The Water Footprint Calculator will help you understand which foods to buy and which to avoid. Here is an explanation of water use in our food from Foodprint. An important way to waste less water in your food is to reduce household food waste.
Reduce the amount of water in the clothes you wear. The fashion industry is the second-largest water consumer in the world (agriculture is first). Around 20% of global water pollution comes from the toxic chemicals used to dye and finish textiles. Fast fashion costs less but is really expensive in water, and 40% of what’s bought isn’t even worn. Learn about the impact of natural or synthetic fabrics.Take this fashion footprint quiz to see you and your family’s impact. Research the brands you buy in sources like this guide.
Learn about your watershed. Watersheds come in all shapes and sizes. Conservation Ontario defines a watershed as the land that catches rain and snow and drains or seeps into a marsh, stream, river, lake or groundwater. Find your local watershed on this map, and check its watershed report card. Learn why it’s important to support the health of your watershed and its ecosystem.
Participate in watershed and wetland restoration. Restoring degraded lands, streams, and riparian areas to ecological health increases the quantity and quality of water available downstream. If you have wetlands on your property, their restoration is an opportunity to help a critical ecosystem that benefits us all. Volunteer to take part in restoration work with groups in your area. Become a nature steward or a citizen scientist, report pollution, remove phragmites and other invasive species, or take part in events within your local watershed.
Support wetlands. Wetlands are disappearing faster than any other type of ecosystem. Sixty percent have been lost globally, and the remainder are being impacted by climate change and development. In parts of southwestern Ontario over 90% of the original wetlands are gone, while Ontario’s smallest wetlands are still not legally protected. Learn why wetlands are important and visit one near you, such as the Rouge Valley Conservation Center, the Humber River and trails near the Royal Botanical Gardens in the Greater Toronto Area. Speak up about wetland protection and restoration to all levels of government
Support beavers. Beavers are a keystone species whose activities support thousands of plant, animal and fish species and provide ecosystem services (link ours) for humans. For North America, beaver wetlands are our rainforests, our coral reefs.Their dams slow the flow of water and provide protection against floods and fire. As nature's engineers, they create and expand wetlands, which act as filters for freshwater. We can support beavers in Canada by protecting and enhancing wetland habitats and learning to coexist. Look for evidence of beavers when exploring, even in urban environments such as Toronto’s Evergreen Brickworks.
Support water protection. Get to know your conservation authority and their role in source water protection, such as the Hamilton-Halton region. Find data on vulnerable areas in your own region through this detailed source water protection atlas. Urge your local and provincial governments to safeguard groundwater supplies, and if needed, help build a strategy for your community. Volunteer for water monitoring in your community, and in rural areas, be sure your local well maintained. Add your voice to campaigns on water issues, such as the one for a moratorium on gravel mining and keep up with the status of protected areas, like the Greenbelt in southern Ontario.
Support the Great Lakes. Learn about areas of concern in the Great Lakes and their tributaries and about the projects of the US-Canada Great Lakes Commission. Here’s their list of transboundary waters. Understand the issues with toxic algae from agricultural runoff, pipeline leaks, and road salt, which affects our drinking water and decreases biodiversity. Participate in public consultations, such as the Scarborough Bluffs Revitalization Study. Join a water organization, such as Our Living Waters, Biinaagami, the Great Lakes Protection Alliance, or find one near you. Check out the Great Lakes Guide to explore and foster a connection to places across this region.
Support dam removal. Removing ageing and obsolete dams, such as the Milltown Dam in New Brunswick, can reconnect fragmented rivers and restore plant and animal life that depend on these aquatic ecosystems. Encourage alternatives to new megadams. This Canadian Wildlife Federation database lists barriers to freshwater connectivity. Here is a citizen’s guide to dam removal from the US that explains the process. See this list of rivers at risk in Ontario, and read stories of small dam removal. Support the shift to alternative hydropower where you live. If you have a body of water near you installing a micro hydro system could generate power for you and your wider community, such as at the Algonquin Eco-Lodge micro-project.
Support the Right to Water. In 2010, the UN General Assembly recognized the right of every human being to have access to adequate amounts of clean water for personal and domestic uses. In Canada, too many Indigenous communities have suffered for years with no access to clean drinking water, although the number of long-term drinking water advisories has reduced from 105 to 33, as of September, 2024. Support organizations like Dreamcatcher Charity and Water First that are taking practical steps to ensure access to clean water. Support Water Watchers’ petition to legally recognize the human right to water in Canada. Help your community become a Blue Community: a local government or public institution must 1) officially recognize water and sanitation as human rights, 2) promote public water and wastewater services and 3) phase out the sale of bottled water at municipal events. Support creating online maps of where water bottles can be refilled in your town, like this one in Peterborough.
Connecting to local organizations taking action on freshwater.
In Anishinaabemowin the name means pure, clean water. They use multimedia, ceremony, water hubs and restoration to rebuild healthy relations between wildlife, people and place in the Great Lakes-St. Lawrence watershed
A thriving network driving collaboration and uniting voices, their Shared Measurement System Dashboard gauges our progress toward an ambitious goal: All waters in good health by 2030.
This leading Canadian advocacy organization works with government, industry and individuals to defend clean water, a safe climate and healthy communities. Read their brief on freshwater.