Indigenous Stewardship and the Modern-Day Lagoon

Throughout history, effective waste management has been essential to public health and environmental stewardship. While the modern world often credits contemporary engineering for innovations in sewage treatment, many of today’s principles can be traced back to Native American, First Nations, or Indigenous knowledge systems. In particular, the concept behind modern wastewater lagoons bears a notable resemblance to traditional Indigenous waste practices, especially those involving the natural filtration and containment of waste through the environment.

The Epitome of Stewardship

According to First Nations Development Institute, “native communities have cultivated and relied on traditional knowledge over thousands of years. This knowledge has shaped biodiversity and supported subsistence lifeways that are distinctively integrated with ecosystems.” Rather than concentrating waste in confined, artificial structures, waste disposal was integrated into the surrounding environment using natural materials and systems. For example, some tribes used composting pits, constructed wetlands, and naturally isolated lowland areas—similar in concept to modern lagoons—to manage both human and animal waste. These systems worked by allowing organic matter to decompose gradually with the help of microbes, sunlight, and natural aeration—processes that are key elements of lagoon-based treatment today.

The Inherent Simplicity of Lagoons

Modern wastewater lagoons, also known as stabilization ponds or oxidation ponds, are engineered basins that treat sewage through natural biological processes. Typically, these lagoons rely on sunlight, algae, bacteria, and time to break down organic waste. The design often includes a series of shallow basins that mimic the behavior of wetlands or naturally occurring ponds, slowing the flow of wastewater and enabling sedimentation, microbial breakdown, and pathogen die-off. This low-energy, low-maintenance method is particularly effective in rural or small communities—similar in scale and population density to many historical Indigenous settlements.

The philosophical alignment between historical ecological practices and the modern lagoon system lies in their shared reliance on natural processes. Modern lagoon systems, while grounded in engineering, embody nature-based solutions to recycle waste and protect waterways.

“Lagoons have been used for centuries, and as a result many consider it to be old technology,” says Merle Kroeker, Director of Applications Engineering at Nexom, an Axius Water Company. “Modern lagoon systems do in fact utilize the same natural processes that have been carried over for generations. However, they also add new advanced techniques and engineered solutions to make them even more effective than other municipal wastewater treatment systems – all the while maintaining the ease of operation, system stability, and cost-effectiveness that lagoons have always been known for.”

Sustainable and Cost-Effective

Moreover, the emphasis on sustainability and low environmental impact in Indigenous practices offers important lessons for today’s world. As communities seek eco-friendly alternatives to energy-intensive and expensive treatment plants, lagoons provide a viable, cost-effective solution that aligns with traditional ecological knowledge. The connection between historical sewer and waste practices and modern-day lagoons is rooted in a shared reliance on natural processes for waste treatment. Both systems utilize the environment—sunlight, water, and microbes—to purify waste without the need for complex infrastructure. As the world faces growing environmental challenges, looking to the past—particularly the sustainable practices of Indigenous communities—can inspire more responsible and effective solutions for the future.