Our work is made possible in part through memberships and contributions from key stakeholders. We invite organizations involved in phosphorus sustainability to contact us and join our alliance of members. The membership is open to all organizations that support our mission, including those working in phosphates, biomaterials recycling, water and wastewater treatment, animal agriculture, crop agriculture, and the food and beverage supply chain.

Sustainable Phosphorus Alliance logo

We’d like to thank our members for their support

The organizations below are the founding and current members that have supported our mission of being North America’s central forum and advocate for the sustainable use, recovery, and recycling of phosphorus in the food system. Members of the Sustainable Phosphorus Alliance generously provide it with financial and other resources to sustain operations. While members of the Alliance do work in areas relevant to phosphorus sustainability and adhere to its code of conduct, membership does not imply the Alliance’s endorsement of their products or services.

Foundational supporter

OCP Group

OCP is integrated across the entire phosphate value chain, extracting, marketing and selling phosphate and its derivatives, phosphoric acid and fertilizers. OCP is the world’s largest exporter of phosphate rock and phosphoric acid, as well as one of the world’s largest producers of fertilizer.

Current members

Arva Intelligence

Arva’s agricultural AI and exclusive measuring, monitoring, reporting and verifying (MMRV) relationships with the climate community’s most respected verification bodies are connecting Energy, CPG, and Manufacturing leaders directly with the farmgate. Their AI tool, CropForce™ empowers operations to pinpoint the best practices with geospatial dataset and actionable AI for through harvest, seed, fertilizer and satellite analytics.

Biochar Now

Biochar Now is a pioneer in the biochar industry with strong engineering, manufacturing, sales and administrative personnel focused on making and selling quality biochar on a very large scale.

Green Technologies, LLC

GreenTechnologies creates environmentally sound lawn and landscape solutions for personal, commercial and public interests. The company develops products from renewable resources for advancement of nutrient recycling and improving environmental quality.


Huma leverages company-owned humate mineral rights to source raw materials to create an extensive range of liquid, dry, and water soluble humic-based products that stimulate beneficial microbial activity to improve crops, soil health, and water quality.

The Mosaic Company

The Mosaic Company is one of the world’s leading integrated producers of concentrated phosphate and potash—two of the three most important nutrients in agriculture.

National Association of Clean Water Agencies (NACWA)*

NACWA is the nation’s recognized leader in legislative, regulatory and legal clean water advocacy – helping ensure a strong, sustainable clean water future.


At Nutrien, our purpose is to “Grow our World from the Ground Up” as the world’s largest provider of crop inputs and services. Nutrien plays a critical role in Feeding the Future by helping growers increase food production in a sustainable manner.


Ostara Nutrient Recovery Technologies Inc. helps protect precious water resources by changing the way cities around the world manage nutrients in water streams, and by producing a fertilizer that significantly reduces the risk of leaching and runoff further protecting local waterways from nutrient rich water.


Phospholutions developed and markets RhizoSorb technology, a fertilizer additive designed to increase efficiency for farmers around the world. They continue to develop more solutions to address global phosphorus use, including responsible fertilizers, remediating nutrient-rich water resources, and circular approaches, extending the life of our vital phosphorus resources.

The Water Research Foundation (WRF)*

The Water Research Foundation engages exclusively in nonprofit, charitable, and educational activities designed to initiate, supervise, coordinate, promote, and finance research in the technology, operation, and management of water, wastewater, reuse and stormwater collection, treatment and supply systems, towards ensuring water quality and improving water service to the public.

Science and Technologies for Phosphorus Sustainability (STEPS) Center

The STEPS Center is a convergence research community of diverse and leading scientists that addresses the complex challenges in phosphorus sustainability by integrating disciplinary contributions across the physical, life, social, and economic sciences.

The Sustainability Consortium

The Sustainability Consortium (TSC) is a global organization transforming the consumer goods industry to deliver more sustainable consumer products.

Strategic partnerships


AgSTAR promotes the use of biogas recovery systems to reduce methane emissions from livestock waste. In addition to producing biogas, anaerobic digestion systems can also help achieve other social, environmental, agricultural and economic benefits.

The Freshwater Collaborative of Wisconsin

The Freshwater Collaborative is a partnership of Wisconsin’s 13 public universities who are training tomorrow’s professionals with real-world skills to address water challenges and meet workforce needs.

Global Water Works

Global Water Works’ mission is to connect people, process and technology to solve water issues locally to extend those solutions globally.

North East Biosolids and Residuals Association (NEBRA)

NEBRA is a non-profit professional association advancing the environmentally sound and publicly supported recycling of biosolids and other organic residuals in New England, New York, and eastern Canada.

The Water Environment Federation (WEF)

The Water Environment Federation is a not-for-profit association that provides technical education and training for thousands of water quality professionals who clean water and return it safely to the environment.

*Founding members