World Wetlands Day: Why This Vanishing Ecosystem is Vital to Clean Water


Sunday, February 2nd, 2025

Wait a sec – why on Earth is a Water, Sanitation, and Hygiene (WASH) charity writing about protecting wetlands?!

Well, the obvious reason is that World Wetlands Day is observed annually today, February 2nd. But that’s only part of the reason.

An animated GIF celebrating World Wetlands Day on February 2nd.

The other part is that wetlands are absolutely critical for maintaining sustainable water supplies for humanity. 

Wetlands naturally filter water by trapping sediment, absorbing excess nutrients, breaking down contaminants, and removing toxins. They help provide people with clean drinking water, reduce disease, support agriculture, and prevent flooding, benefiting both people and ecosystems.

And why do they need protecting? Although wetlands are some of the most vital ecosystems on our planet, they remain among the most threatened. 

Whether you’re reading this from a place where wetlands shape your local landscape or from a region far removed, everyone shares the responsibility to protect wetlands in order to keep our planet’s water cycle running as it should.

What Are Wetlands?

Wetlands are ecosystems where the land is saturated with water, either permanently or seasonally. This creates a unique environment that supports diverse plant and animal life adapted to wet conditions. 

Scholars and ecologists generally recognize two types of wetlands: coastal or tidal and inland or non-tidal. But beyond these two categories, wetlands are quite varied. They can be made from freshwater, saltwater, or brackish water. They also include marshes, swamps, bogs, fens, and mangrove forests.

Wetlands are found worldwide, from coastal estuaries and floodplains to inland river basins and high-altitude peatlands. Major wetland regions include the Everglades in the U.S., the Okavango Delta in Botswana, the Amazon River floodplains, and the Sudd in South Sudan. 

The Value of Wetlands: Nature’s Multitaskers

Wetlands are often referred to as “nature’s kidneys” for their unparalleled ability to filter and purify water. They absorb pollutants, excess nutrients, and sediments, ensuring cleaner water downstream. 

In addition to their filtration properties, wetlands also act as natural sponges, absorbing excess rainwater and reducing the risk of floods. This is especially important in regions experiencing increasing climate variability and extreme weather events — like sub-Saharan Africa, where The Water Project works. Western Kenya, in particular, experienced such extreme flooding last year that schools and businesses had to shut down.

Another function of wetlands is that by holding and slowly releasing water, they help replenish underground aquifers. This is good for Earth in multiple ways: it helps prevent the over-extraction of water, the formation of sinkholes and fissures, and a lack of water during dry seasons or droughts.

Wetlands also provide a habitat for countless species of plants, birds, fish, and other wildlife. Many of these species are not found anywhere else in the world.

One type of wetland called peatland is particularly important to Earth’s balance of carbon and carbon dioxide, as well. 

“Peatlands store up to 30% of the world’s terrestrial carbon (C) despite occupying just 3% of the terrestrial land surface; they also represent a huge source of carbon that is at risk of being released by runaway climate change at current rates of warming. They therefore play a critical role in the global carbon cycle.”

Minnesota Board of Water and Soil Resources

Aside from their natural and ecological purposes, wetlands also support human activities like agriculture, fisheries, and tourism, offering vital resources and livelihoods for people worldwide.

The Threats to Wetlands

Despite their importance, wetlands are disappearing at an alarming rate. We are losing wetlands three times faster than forests. 64% of the world’s wetlands have been lost since 1900.

The reasons for this loss are:

  • Drainage for agriculture. Wetlands are often drained to make way for crop cultivation, disrupting their natural functions and leading to loss of biodiversity.
  • Urban development. Expanding cities encroach on wetland areas, replacing vital ecosystems with impermeable surfaces that exacerbate flooding.
  • Pollution. Agricultural runoff, industrial waste, and untreated sewage pollute wetlands, reducing their capacity to filter water and support wildlife.
  • Climate change. Rising temperatures and changing rainfall patterns threaten the balance of wetland ecosystems, drying out some areas while inundating others.

Limited resources and governance challenges compound these threats in The Water Project’s service areas. Degraded wetlands in sub-Saharan Africa often lead to reduced water availability.

While wetlands are globally significant, they take on an equally vital role in some of our service regions, such as Western Kenya and Sierra Leone. In these areas, wetlands provide critical ecosystem services that align closely with the organization’s mission to ensure safe and sustainable access to water.

For example, the Yala River Basin in Western Kenya is home to extensive wetland systems that not only filter water but also supply local communities with water for domestic use and agriculture. 

And in Sierra Leone, chiefdoms like Kaffu Bullom and Lokomasama host wetlands that protect coastal areas, support rice farming, and sustain fisheries. The health of these wetlands directly impacts the livelihoods and food security of surrounding communities. 

Protecting Wetlands Locally and Globally

Local Actions

  • Educating your community about the value of wetlands and involving them in conservation efforts can lead to more sustainable management practices. Visit WorldWetlandsDay.org for a library of social media shareables ready for your use.
  • Promoting farming methods that minimize wetland drainage and pollution. If you have a farmer in your life, refer them to the United States Department of Agriculture Natural Resources Conservation Service website.
  • Planting native trees around wetlands can stabilize soil, prevent erosion, and enhance water retention. Many regional wetlands and conservation-minded associations will host events for the public to come help in wetlands conservation efforts — a simple web search of your area should turn up some local events!

Global Advocacy

  • Governments must enforce laws protecting wetlands. You can contact your local representatives to advocate for stronger wetland protections.
  • Donating to organizations that work to protect and restore wetlands ensures that these efforts are adequately resourced. Groups like Wetlands International provide ways to contribute directly.

A Shared Responsibility

By protecting wetlands, we safeguard the health of our planet and the well-being of future generations. Whether through advocacy, education, or direct support, everyone has a role to play in preserving these irreplaceable ecosystems.

As The Water Project continues its mission to provide access to clean water, it also relies on the strength and resilience of natural systems like wetlands. Together, we can ensure a future where wetlands and the communities they support continue to flourish.

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Jamie Heminway

Jamie is a storyteller by nature. In joining the Water Project, she’s finally found a workplace where that pesky bleeding heart of hers can be put to use (and, less importantly, that BA in English Language & Literature from New England College).