Water scarcity is one of the most urgent global challenges of our time, creating powerful long-term investment opportunities. As populations grow, climate change intensifies droughts, and infrastructure ages, capital is flowing into companies that provide water treatment, desalination, smart metering, and sustainable water management. For investors seeking both impact and growth, water scarcity investment funds offer diversified exposure to this essential theme. In this guide, we’ll explore the top 10 water scarcity investment funds worth considering, focusing on performance potential, global reach, and strategic positioning in the expanding water economy.
1. Allianz Global Water Fund
The Allianz Global Water Fund is one of the most established water-focused investment vehicles available to global investors. It invests in companies engaged in water treatment, infrastructure, utilities, and technology solutions addressing global water scarcity. The fund emphasizes long-term structural growth driven by regulation, population expansion, and environmental pressure. With diversified holdings across developed and emerging markets, it balances defensive utility exposure with innovative water technology firms. For investors seeking a pure-play water scarcity fund with strong thematic alignment and professional management, Allianz Global Water Fund remains a leading option in the space.
2. Pictet Water Fund
Pictet Water Fund is widely recognized as a pioneer in thematic water investing. The fund focuses on companies that provide water supply, environmental services, and water efficiency technologies. Its disciplined stock selection process combines environmental trends with fundamental financial analysis. Investors benefit from exposure to desalination, wastewater treatment, infrastructure modernization, and smart water systems. With decades of experience in thematic strategies, Pictet has built a reputation for steady performance and global diversification. This fund appeals to long-term investors who want exposure to companies positioned to benefit from tightening global water supplies.
3. Invesco Water Resources ETF (PHO)
The Invesco Water Resources ETF offers investors efficient, low-cost access to U.S.-listed companies focused on water conservation and purification. Tracking a water-focused index, PHO includes firms involved in filtration systems, water infrastructure, irrigation equipment, and related technologies. Its ETF structure provides liquidity, transparency, and ease of trading. For investors who prefer passive strategies while gaining exposure to water scarcity solutions, PHO is a compelling choice. The fund’s diversified holdings across industrial, technology, and utility sectors provide balanced exposure to the growing demand for sustainable water management.
4. First Trust Water ETF (FIW)
The First Trust Water ETF invests in companies generating substantial revenue from potable water and wastewater industries. Unlike purely market-cap weighted funds, FIW uses a modified equal-weight strategy, offering broader exposure to mid-cap growth opportunities. It targets infrastructure upgrades, engineering services, filtration technology, and water distribution systems. As global governments increase spending to modernize aging water systems, FIW is positioned to benefit from infrastructure-driven growth. This ETF is ideal for investors seeking diversified exposure to the water scarcity theme with a balanced allocation approach.
5. iShares Global Water ETF (IH2O)
The iShares Global Water ETF provides exposure to leading global companies operating in water utilities and water equipment sectors. With holdings spanning North America, Europe, and Asia, IH2O offers geographic diversification in addressing water stress challenges. The fund includes companies specializing in pipelines, pumps, testing equipment, and advanced purification technologies. Investors seeking international exposure to water scarcity solutions often favor this ETF for its broad reach and established brand backing. As water infrastructure becomes increasingly critical worldwide, IH2O offers a convenient gateway into the global water investment theme.
6. Calvert Global Water Fund
The Calvert Global Water Fund combines financial performance objectives with sustainability principles. It invests in companies providing water treatment, efficiency technologies, and distribution systems while incorporating environmental, social, and governance (ESG) screening. This dual focus appeals to impact-oriented investors who want measurable sustainability alignment alongside growth potential. The fund targets both developed and emerging markets where water scarcity risks are intensifying. By focusing on responsible operators within the water value chain, Calvert aims to capture long-term growth while supporting improved global water stewardship.
7. Fidelity Sustainable Water & Waste Fund
The Fidelity Sustainable Water & Waste Fund invests in companies addressing water infrastructure, recycling, waste management, and resource efficiency. While broader than pure water funds, it provides meaningful exposure to water scarcity through filtration, wastewater treatment, and environmental engineering firms. Fidelity’s research-driven approach seeks companies with strong earnings growth potential and durable competitive advantages. Investors benefit from a diversified sustainability theme that includes water scarcity solutions as a core component. This fund may suit those who want water exposure within a wider environmental investment framework.
8. Tortoise Water Fund
The Tortoise Water Fund focuses on companies operating regulated water utilities and essential infrastructure providers. Utilities offer relatively stable cash flows, making this fund attractive to income-oriented investors seeking exposure to water scarcity. As water demand increases and infrastructure spending rises, regulated utilities can benefit from capital investment programs and rate adjustments. Tortoise combines dividend potential with long-term structural growth in water demand. For conservative investors prioritizing stability alongside exposure to water scarcity trends, this fund provides a balanced risk profile.
9. Lyxor World Water ETF
The Lyxor World Water ETF tracks a global index of companies actively involved in water supply, treatment, and infrastructure development. Its diversified portfolio includes engineering firms, utility operators, and water technology providers. The ETF structure ensures cost efficiency and accessibility for international investors. With increasing regulatory pressure and climate-driven water stress, companies within this index stand to benefit from sustained investment flows. Lyxor World Water ETF appeals to investors seeking straightforward, passive exposure to the expanding global water economy.
10. BNP Paribas Aqua Fund
BNP Paribas Aqua Fund invests in companies dedicated to water treatment, pollution control, distribution, and efficiency improvements. It emphasizes innovation and sustainable practices while targeting firms positioned to benefit from global water scarcity pressures. The fund’s diversified portfolio spans utilities, industrial equipment manufacturers, and environmental service providers. BNP Paribas integrates ESG considerations into its investment framework, aligning financial returns with responsible environmental impact. For investors seeking active management within the water theme, BNP Paribas Aqua Fund offers a comprehensive and strategically diversified approach.
Conclusion
Water scarcity investment funds provide exposure to one of the most critical long-term global megatrends. From infrastructure upgrades and desalination to smart metering and wastewater recycling, companies addressing water shortages are positioned for structural growth. Whether you prefer actively managed mutual funds or low-cost ETFs, these top 10 water scarcity investment funds offer diversified access to the expanding water economy. As climate risks intensify and governments boost water infrastructure spending, investors who allocate capital toward water solutions may benefit from both sustainable impact and long-term financial opportunity.