Index of 51 Cities Highlights Opportunity to Mitigate Water Scarcity through Sustainable Water Management
WILMINGTON, Del., Nov. 8, 2021, Economist Impact today launched the inaugural , sponsored by DuPont, which will measure how well cities around the world are safeguarding the reliability, accessibility, and sustainability of water resources. The Index can serve as a measurement tool for city leaders, policymakers, and regulators to make resource, investment and policy decisions toward increased access to safe, affordable, and reliable water.
Unlike other indices, which focus on water scarcity or water quality, the City Water Optimisation Index creates a common framework to benchmark numerous factors that contribute to an optimized and ample water supply. Its findings incorporate 47 quantitative and qualitative indicators that assess how well each city’s policies and infrastructure safeguard water supply, treatment, and distribution networks.
With climate change increasingly challenging our water supplies and the projected urban population growth, the Index is a powerful tool for decision-makers around the world to measure how well their cities are prepared to deliver safe, reliable, sustainable access to water. The Index can also be used by cities to develop and refine their water strategies, learn from other cities’ successes and setbacks, and prioritize projects and policies that will have the greatest impact on water optimization, and thus water security.
The results of the Index are encouraging, with cities with diverse geography, climate, and socioeconomic factors achieving commendable results in two of the three categories—Reliability and Accessibility. The results were mixed, however, in the Sustainability category, measuring how waste is minimized and efficiency is maximized, a key factor in ensuring water accessibility for future generations. Highlights of the findings of the include:
In addition to the report, Economist Impact launched two interactive tools for the public— including city leaders— to explore data and scoring across the first 51 cities featured in the Index. With the City Water Optimiser Tool, users can adjust many of the 47 levers to learn which steps may best improve water reliability, accessibility, and sustainability, and uncover opportunities to optimize a city’s water environment—contributing to the planning and prioritization of local water efforts.
“From innovating sustainable water technologies to sponsoring this Index, we see a clear path toward optimizing the global water supply to enable people, industry, and the environment to thrive.”
Alexa Dembek, DuPont Chief Technology & Sustainability Officer
“Water is becoming an ever-increasing challenge for city leaders around the world, with climate change and urban population growth further adding to the pressure,” said Claire Casey, Global Head of Policy & Insights, Economist Impact. “Though the challenge is daunting, our research makes me hopeful that we can shift our future from the risk and stress of water scarcity to the untapped potential of water abundance. Through careful planning, effective governance and robust technology adoption, city water systems can be optimized to provide clean, abundant and affordable water for all — now and for decades to come.”
“At DuPont, our purpose is to deliver solutions that address society’s most pressing challenges, including a strategic focus on clean water,” said Alexa Dembek, DuPont Chief Technology & Sustainability Officer. “From innovating sustainable water technologies to sponsoring this Index, we see a clear path toward optimizing the global water supply to enable people, industry, and the environment to thrive.”
The Index is a key part of DuPont’s efforts to lead global collaboration toward a more water-optimized world.
“We envision a future where the world’s 7.8 billion people all have daily access to safe, clean water; where makers and producers have the necessary water to make the products, food and energy on which we rely; and together we optimize the circular nature of water in a sustainable, equitable way,” said HP Nanda, Global Vice President and General Manager, DuPont Water Solutions. “We believe this starts with a common set of indicators, global conversations on impactful solutions, and collective action inspired by this knowledge.”
DuPont has a broad portfolio of sustainable water purification and separation technologies and solutions that enable water reuse and recycling, desalination and groundwater access, including reverse osmosis (RO) membranes, ion exchange resins (IEX), ultrafiltration (UF), electrodeionization (EDI), nanofiltration (NF), membrane bioreactor systems (MBR), membrane aerated biofilm reactors (MABR), membrane degasification, and closed-circuit reverse osmosis (CCRO) systems.
The report is the product of a two-year effort. After formulating the Index, the Economist Impact research team gathered data on 51 cities around the world, incorporating data records, local interviews, and public perception surveys. The team plans to add another 50 cities to the index in 2022.
For the full report, Index, and City Water Optimiser Tool, visit
About Economist Impact:
Economist Impact combines the rigour of a think-tank with the creativity of a media brand to engage a globally influential audience. We believe that evidence-based insights can open debate, broaden perspectives and catalyse progress. The services offered by Economist Impact previously existed within The Economist Group as separate entities, including EIU Thought Leadership, EIU Public Policy, Economist Events, EBrandConnect and SignalNoise. Our track record spans 75 years across 205 countries. Along with creative storytelling, events expertise, design-thinking solutions and market-leading media products, we produce framework design, benchmarking, economic and social impact analysis, forecasting and scenario modelling, making Economist Impact's offering unique in the marketplace. Visit for more information.
DuPont (NYSE: DD) is a global innovation leader with technology-based materials and solutions that help transform industries and everyday life. Our employees apply diverse science and expertise to help customers advance their best ideas and deliver essential innovations in key markets including electronics, transportation, construction, water, healthcare and worker safety. More information about the company, its businesses and solutions can be found at www.ciddinet.com. Investors can access information included on the Investor Relations section of the website at investors.ciddinet.com.
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For further information contact:
Dan Turner, DuPont
Holly Donahue, The Economist Group