About
Since 2015
A Minority owned, Woman owned, Veteran owned California Limited Liability Company.
WaterFunder, LLC accelerates the development of water infrastructure projects with project finance advisory and grant writing and management services.
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The benefits of water equity and water security are attainable for communities and companies.
We craft strategic alliances and co-development partnerships that connect funding and financing solutions for small, rural, tribal and economically challenged communities specifically to accelerate the rebuild of resilient water infrastructure. Our alliance and partnership network allows us to easily customize corporate water stewardship and sustainability programs that satisfy declared ESG goals.
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We pursue activities and relationships that get quick wins for a slow industry.
WaterFunder engagements support the financing needs of broadly defined water, sewer, storm, source water and green infrastructure projects. We build alliances with investors and work with the stakeholders to accelerate the development process. We have assembled an experienced team of project finance, capital planning, asset management and development experts with experience in wastewater, drinking water, stormwater, source water and renewables.
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We focus on vulnerable communities and companies, and the ecosystems that supports them.
Small, rural, tribal, and economically disadvantaged communities are the most vulnerable to water inequities. Many US companies face extreme valuation losses from exposures to water insecurity risks. WaterFunder helps communities and companies implement innovative solutions that meet their aligned priorities.
Mission
We believe
We believe that access to clean water is a human right, and capital should never be a barrier to achieving it. Our mission is to connect grantors, stewards, and investors with projects, programs, and innovations that deliver sustainable, equitable water solutions—from urban infrastructure to nature-based systems. By aligning climate finance with water equity, we’re driving the innovations that make water access affordable, reliable, and resilient, ensuring that every community has the dignity of clean water and sanitation.
Vision
We envision
We envision a world where access to water is never taken for granted—where communities, businesses, and ecosystems are empowered to thrive through sustainable water innovations. By fostering partnerships and unlocking capital for resilient water infrastructure and water management solutions, we aim to make water security a global standard, ensuring equitable access and recognizing water’s essential role in everything we do. Together, we’ll transform the way we value and manage this vital resource, building a future of lasting water equity and climate resilience.
Impact
$5M
Low cost of capital financing secured for water infrastructure in rural communities
$10M
Vetted portfolio of financeable opportunities for climate impact bridge loans
$20M
Vetted portfolio of water replenishment and water quality opportunities for Fortune 100 corporate water stewards
90%
Win rate for stormwater, watershed, and groundwater infrastructure and management grants
Principal Consultant
Arthine Cossey van Duyne
CEO & Principal Consultant for WaterFunder, LLC
​Arthine is a climate finance consultant focusing on solutions for water equity and water stewardship. She has global management experience in the public, private, government, academic, start-up, and non-profit industry sectors. She has crafted and implemented growth and expansion strategies for development banks, foreign direct investment agencies, water utilities, capital markets, and Silicon Valley tech giants.
Arthine is a Board Advisor to The Freshwater Trust, and Board Member to Westside Water Resources, and the Pacific Institute.
She is an US Army veteran and held roles in data management, military intelligence, and civil affairs. She was a Fuse Executive Fellow and an Aspen Climate Policy Fellow, and she has an Economics BA from UC Davis and an MBA from IMD in Switzerland.
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