Water quality ranking by country. Jul 21, 2023 · Read update The U.
Water quality ranking by country is famous for its tap water's quality thanks to its regulations. Find detailed insights into clean and safe drinking water for every city. Explore global rankings and insights from the IQAir World Air Quality Report. Mongolia There are a few effective systems already in use for categorizing water, such as the Environmental Performance Index (EPI), developed by Yale University. The Global Food Security Index (GFSI) is an annual assessment measuring food security through affordability, availability, quality and safety, and sustainability and adaptation metrics worldwide. If you Jun 15, 2024 · Introduction Country tap water ranking refers to the evaluation and classification of different countries based on the quality, safety, and accessibility of their tap water. Jul 2, 2024 · A complete guide to tap water in the United States, including a state-by-state analysis of the nation’s best and worst tap water. Household water consumption Factors such as the type of housing, climate and habits can affect the average amount of water consumed per person. List of cleanest countries in the world considering factors such as environmental sustainability, pollution levels, waste management, and overall environmental quality, highlighting the top cleanest countries with a brief description. Apr 10, 2024 · This chart shows the countries/regions with the highest/lowest scores on the Ocean Health Index. The purpose of the Pathway to the World Water Quality Alliance is to eliminate the gaps and establish a point of reference for all those who require information regarding water quality. The United States-based university, in its 2024 Explore global access to clean drinking water by country, featuring nations with 100% access and global trends. The below ranking shows the cities in America visitors would be least likely to drink the tap water in. These cities prioritize water quality and have strict monitoring and treatment processes to eliminate harmful compounds or chemicals. Some countries, however, have achieved near-perfect water quality through strong infrastructure, natural abundance, and rigorous safety standards. In June, J. While some countries struggle with water contamination and scarcity, others are fortunate to have some of the best tap water in the world. May 24, 2025 · With over 50,000 community water systems in the U. Ten European countries, including Austria, Finland, Greece, and Iceland, share the top EPI ranking for the cleanest water worldwide. Oct 8, 2023 · In this article, we will be studying tap water, its supply, and its treatment process. See the Best States methodology for a detailed look at the data behind the analysis. Countries’ wealth is a strong predictor of their overall environmental performance, but some countries vastly outperform their eco-nomic peers, while others lag. Select Country How Do Your Rate the Tap Water in Your City? How do you find the quality and the accessibility of the drinking water? Aug 13, 2024 · Ranking Criteria and Methodology The ranking of cleanest countries is based on several comprehensive criteria, including air quality, water quality, waste management, greenhouse gas emissions, and overall environmental health. According to the most recent water quality violation data, there is a wide range in the commitment and success by states in maintaining compliance with federal water standards. Learn about global standards and what makes their water supply exceptional. On top of that, there are only 3,000 electric vehicle registrations in Louisiana. 1 day ago · A global assessment of environmental and public health indicators for 2025 has ranked Iceland as the cleanest country in the world, followed by Switzerland and New Zealand. Environmental Performance Index Ranking: What It Reveals Global Insights from EPI Rankings The Environmental Performance Index (EPI) ranks countries based on their environmental performance across various indicators, such as air quality, climate change policies, and biodiversity protection. Jul 16, 2025 · Some countries, however, have achieved near-perfect water quality through strong infrastructure, natural abundance, and rigorous safety standards. News ranks states according to industrial toxins and pollution health risk. Ranking Of Countries By Drinking Water Quality |ComparisonYale University experts decided that the most objective indicator would not be laboratory tests tak How polluted is the air today? Check out the real-time air pollution map, for more than 80 countries. Nov 13, 2024 · When it comes to the tap water quality around the world, it’s clear that not all water is created equal. Mar 17, 2022 · A new report shows that Indiana has nearly 25,000 miles of rivers and streams that are too polluted for swimming — the most of any state. Jun 7, 2021 · There exists an urgency to eradicate the gaps in society’s knowledge of the state of water quality resulting from a lack of data and regular monitoring. Water stress scores range from 0. Jul 28, 2025 · Bangladesh continues to battle some of the most severe water quality challenges on the planet. View the 2024 EPI Results. Power conducted a study to find the states with the best tap water. This list of water supply and sanitation by country provides information on the status of water supply and sanitation at a national or, in some cases, also regional level. From best to worst, here’s how each state Jun 3, 2025 · The Global Freshwater Quality Database GEMStat provides scientifically-sound data and information on the state and trend of global inland water quality. Yet despite our best efforts, more than 30 million men, women, and children may be drinking from an unsafe supply. Discover the countries with the highest PM2. Aug 8, 2023 · Frankfurt, Vienna, and Copenhagen are among the cities with the cleanest tap water, ensuring excellent taste and remarkable purity. It refers to the presence of harmful substances—known as pollutants—in the air, water, or land that can adversely affect human health, animal life, plant growth, and entire ecosystems. Quality of Life Index Index By Country 2025 Mid-Year United States China United Kingdom Russia Germany France Japan Italy Canada 0 50 100 150 200 Aug 16, 2023 · New data on WRI's Aqueduct platform ranks the world's most water-stressed countries. Industrial runoff, arsenic contamination, and poor sanitation are major factors pushing the nation’s water systems to the brink. From World Resources Institute: Baseline water stress measures the ratio of total water withdrawals to available renewable water supplies. [2] Fresh and unpolluted water accounts for 0. But first, a couple of disclaimers: Although there is no globally accepted composite index of water quality, some countries and regions have used, or are using, aggregated water quality data in the development of water quality indices. To assess the impact, J. Explore tap water quality across cities worldwide with comprehensive ratings, taste scores, safety standards, contaminants, pH levels, and sustainability data. Data on the level of contaminants in drinking water around the globe. Safe drinking water is water from an improved water source which is reliable and free from contamination. News ranks states based on drinking water violation points. [3] Sanitation & Drinking WaterThe Sanitation & Drinking Water issue category measures how well countries protect human health from environmental risks on two indicators: unsafe drinking water and unsafe sanitation. Aug 2, 2024 · In August J. Select Region: Africa America Asia Europe OceaniaDownload table A comprehensive index of country rankings on various datasets including geographic size, quality of life, and cost of living. Utility customer surveys do not rank Colorado tap water highly when it comes to quality despite the often-repeated and true claim that much of the state’s water comes from snowmelt flowing down mountain streams. Around the world, different places have different water quality based on how well they take care of their water systems. Based on an analysis by World Population Review on DALY (Disability-Adjusted Life Years) score scale, these nations have the world’s best water quality, with almost zero health risks from drinking water. 2 and considered the most critical for surface water quality. This list has been updated to include more cities with the cleanest waters in the country and information about the regulation. We’ve looked at data from accredited water assessment bodies, general geographic information, and relevant recent local water news in each state to judge the overall quality of the tap water supply in each area of the country. Data on water quality in all the world's countries, including countries with the highest water quality (safest drinking water) and countries with the worst water quality. LawnStarter has ranked the best cities for water quality so you can see where your city stands. Aug 1, 2025 · #1: New Orleans, Louisiana Although New Orleans is one of the country's most unique and charming cities, it holds the top spot on our list of dirtiest cities. See our methodology for more information. Answering Aug 22, 2023 · Discover the top 10 countries with the best tap water quality. 00 (most stressed). The ranking is based on four weighted categories: air quality (30%), water quality (25%), waste management (25%), and sanitation/hygiene (20%). Water quality worldwide varies significantly depending on the final use of the resource, with safely managed drinking water access on the rise but, on the contrary, water bodies still suffering Comprehensive data on pollution by country, showcasing various statistics and analyses to illustrate each country's environmental impact. About Data, measured at the water source, on the quality of water is essential for both the delivery of services and the prevention of diseases. See the state pollution rankings and find out how safe your surrounding environment is. According to our ranking, these 5 cities have the most contaminated drinking water: Newark, NJ; Las Vegas, NV; Pittsburgh, PA; Wilmington, DE; and Tulsa, OK. Discover the top-performing states and areas of concern. Included as part of the report's analysis is a ranking of over 180 countries and territories of the amount of renewable water available per capita in each area. 3. Aug 22, 2024 · Looking for a place to breathe the cleanest air? A global ranking by the World Population Review has European countries leading the pack, with Estonia at the top. The study analyzed utility customer feedback from all 50 states and the District of Columbia Select Region: Africa America Asia Europe OceaniaDownload table The following list of countries by air pollution sorts the countries of the world according to their average measured concentration of particulate matter (PM2. Some countries have invested heavily in filtration, sanitation, and infrastructure, ensuring their residents have access to safe, clean drinking water directly from the tap. The air quality metric is one of many that factor into the overall Best States rankings. 003% of In some of the mid-ranking countries for drinking water there was a wide variation in water quality outlined in the survey. Jan 10, 2025 · Some states have much worse drinking water quality than others, new data reveals. Nov 29, 2022 · Find the US city with the cleanest tap water! Uncover which cities have the best water quality and the best drinking water in the US in this captivating blog. com! Aug 26, 2024 · Discover the top 10 countries with the cleanest and safest tap water. It provides a global perspective on water quality and highlights the disparities "This index looks at the quality of drinking water in 180 countries around the world based on the number of age-standardised disability-adjusted life-years lost per 100,000 persons (DALY rate) due to exposure to unsafe drinking water. Denmark’s efficient water management practices and commitment to environmental sustainability have earned it a top spot on the list of countries with the cleanest drinking water. The ND-GAIN Country Index, a project of the University of Notre Dame Global Adaptation Initiative (ND-GAIN), summarizes a country's Vulnerability to climate change and other global challenges on the one hand and its Readiness to improve resilience on the other hand. 00 (least stressed) to 5. In this article, we will explore the top 20 countries with the best tap water, based on various factors such as quality, safety Explore global water quality and its evolution over 20 years. The country also invests heavily in water treatment facilities and infrastructure to ensure that its citizens have access to clean and safe drinking water. org Explore global access to clean drinking water by country, featuring nations with 100% access and global trends. Water quality in the Big Easy is one of the lowest on our list. Aug 25, 2024 · Target 6. Power provided an in-depth look at the country’s water quality, determining which states have the best—and worst—tap water. Both publications became part of Informa TechTarget when that company launched in December. The country ranks 22nd in the world for its drinking water quality. It comprises two measures: the number of days with an air Comprehensive data on pollution by country, showcasing various statistics and analyses to illustrate each country's environmental impact. . The World Health Organization's recommended limit is 10 micrograms per cubic metre, although there are also various national guideline values, which are often much higher. The country with the highest clean water score worldwide in 2024 was the Seychelles. Here, each state is ranked from best to worst water quality. Power, which analyzes consumer data, released rankings of water quality based on customer feedback from water Jul 9, 2025 · Cleanest Water on Earth: Switzerland is known for having the cleanest and safest drinking tap water in the world. S, the quality of tap water can drastically vary, making it an intricate part of our everyday lives and health. So if you’re wondering about water quality ranking by city or just what cities have the cleanest water (and the worst), we’ve got some findings to share. Water is essential for life, and having access to clean and safe tap water is a basic necessity for people all around the world. Dane Westwood, roads and sewer specialist for RS Bonds explains why the UK has failed to crack the top 50 countries for clean water: “The UK is facing a crisis in terms of its water quality and the country’s failure to reach the top 50 in our results is alarming, though not surprising. Professor Tomkins says: “In North Americas there is high quality drinking water in cities (perhaps with some exceptions like Detroit and New Orleans), but in rural and semi-urban areas there is a wide variation in water Jul 21, 2023 · Read update The U. We Unite for a common cause, access to safe drinking water for every community, every where. More than half (55%) of Washington State residents said they always drink tap water, which ranks among the highest in the country. The air and water quality subcategory informs the best states for natural environment rankings and the overall Best States rankings. Includes information on which countries have the safest drinking water and which countries have the least access to clean drinking water. Jun 25, 2024 · You can find the ranking for the top 60 countries here. Power ranked the states with the best and worst tap water based quality, reliability, conservation and more. We measure unsafe drinking water using the number of age-standardized disability-adjusted life-years lost per 100,000 persons (DALY rate) due to exposure to unsafe drinking water. How polluted is the air today? Check out the real-time air pollution map, for more than 80 countries. Part of the overall Best Countries rankings from U. Data on water quality in all the world's countries, including countries with the highest water quality (safest drinking water) and countries with the worst water quality. Comprehensive overview of the dirtiest countries worldwide, highlighting country-by-country profiles of the nations with the worst air pollution in the world including detailed information on pollution levels throughout the years. One-quarter of the global population regularly use up their entire water supply. Each component is given a score out of 10, with a nation’s overall water security score calculated from the sum. Together, the reporters and editors are providing in-depth coverage of the most Explore state water quality insights, from drinking violations to PFAS presence. Nov 1, 2024 · World Bank Water Data is a one-stop shop for all water-related open data at the World Bank. Based on an analysis by World Population Review on DALY (Disability-Adjusted Life Years) score scale, these nations have the world’s best water quality, with almost zero Nov 12, 2023 · Americans are lucky to have some of the cleanest drinking water in the world. The source of a town’s water, the material it passes through on its way to citizens’ homes, and even the city’s pipes for delivering that water, all affect the water’s quality. ” Dec 28, 2019 · Countries ranked by People using safely managed drinking water services (% of population)People using safely managed drinking water services (% of population) - Country Ranking Definition: The percentage of people using drinking water from an improved source that is accessible on premises, available when needed and free from faecal and priority chemical contamination. See which states have the best drinking water quality. Global map of countries by total renewable internal freshwater resources (billion cubic meters) in 2020, according to World Bank [1] This is the list of countries by total renewable water resources for the year 2020, based on the latest data available in January 2024, by World Bank and Food and Agriculture Organization (AQUASTAT data). to find out which states boast the purest, most refreshing water. The Sanitation & Drinking Water issue category measures how well countries protect human health from environmental risks on two indicators: unsafe drinking water and unsafe sanitation. The best countries have spent lots of money and time making sure their water treatment plants work perfectly and their pipes are clean. Jun 30, 2023 · Learn about Memphis tap water quality! Find out how Memphis ranks among U. Discover global water quality rankings by country with EPI scores, from the pristine waters of Iceland to challenges in Niger. Data for this indicator come from May 24, 2025 · According to data compiled by World Population Review, the quality of drinking water in different countries can be assessed using metrics like the Environmental Performance Index (EPI) Drinking Water Score. The Index either looks at the quality of designated drinking water sources, or of environmental water sources (if drinking water data is not available). Jul 16, 2025 · Clean, safe drinking water is a basic need, but not a global guarantee. Our rankings are based on a combination of the EPA’s weighted points system from the Safe Drinking Water Act and real-life experiences from residents. Data from the Environmental Protection Agency shows how many Safe Drinking Water Act (SDWA) violations were Jun 29, 2023 · Washington State finishes in a virtual tie with Kentucky, as residents made note of their willingness to drink tap water. Improved water sources The Sanitation & Drinking Water issue category measures how well countries protect human health from environmental risks on two indicators: unsafe drinking water and unsafe sanitation. Aug 16, 2024 · SINGAPORE - Singapore leads the world in the provision of safe and clean drinking water in the latest ranking of 180 countries by Yale University. Mar 11, 2025 · How essential is clean drinking water to a state’s overall livability? Today, we’re diving into water quality across the U. The 10 countries with the lowest EPI water quality scores are all located in Africa. D. Conversely, 2023 water stress rankings range from 1 (most stressed) to 164 (least stressed). cities with the cleanest drinking water. Aug 23, 2025 · Bulgaria, Greece, Romania, and Austria topped Europe's 2024 water quality rankings with excellent ratings for their cleanest lakes and rivers. By opting for tap water in these cities, travelers can enjoy safe, free water while also reducing plastic waste. Find out which nations offer the world's cleanest and safest drinking water. Air pollution is Aug 4, 2021 · These data, provided by the European association of urban water cycle managers EurEau, which includes 29 European countries, allow us to have a global vision and to compare the different countries. A score of 100 indicates a country has among the lowest DALY rates in the world (≤5th-percentile), while a score of 0 indicates a country is among the highest (≥95th-percentile). The Sustainable Development Report 2025 tracks the performance of all 193 UN Member States on the 17 Sustainable Development Goals. Jul 7, 2025 · Discover all statistics and data on Water quality worldwide now on statista. News and World Report. Indiana ranks poorly for drinking water quality, industrial toxins, pollution health risks, and urban air quality, according to a ranking published by U. Explore an analysis of the cities with the highest and lowest water contamination in the country. 3 is: “By 2030, improve water quality by reducing pollution, eliminating dumping and minimizing release of hazardous chemicals and materials, halving the proportion of untreated wastewater and substantially increasing recycling and safe reuse globally. Water withdrawals include domestic, industrial, irrigation and livestock consumptive A cool guide of countries with the best tap water quality in the world according to the CDC and Yale University’s EPI data (stolen from r/coolguides) Oct 27, 2023 · The challenges that individual states face in ensuring quality drinking water depend on factors including available natural water resources, infrastructure caliber, and metering and billing technology. Snapshot The EPI assesses water quality based on the DALY rate (disability-adjusted life-years lost per 100,000 persons from unsafe drinking water). Most Polluted Countries in the World 2025: Global Air Quality Rankings Pollution is one of the greatest environmental challenges facing the modern world. Aug 26, 2025 · State-by-State Water Quality Rankings Because water quality varies greatly by state, it’s important to know where your state stands and how you can mitigate any water issues. S. This includes all of the water circulating on the surface, in the soil or deeper underground. 5) in micrograms per cubic metre (μg/m 3). Carbon dioxide emissions offset some of these issues by ranking in the middle of the cities List of cleanest countries in the world considering factors such as environmental sustainability, pollution levels, waste management, and overall environmental quality, highlighting the top cleanest countries with a brief description. New York places third, thanks in large part to recent infrastructure improvements made throughout the Empire State. Also ranked is the quality of the 180 countries' water. We will also be taking a look at the countries that provide the best quality tap water in the world. This score reflects various factors contributing to the safety and cleanliness of a country's water supply. According to a 2024 report from WaterAid, over 20 million people still lack access to safe drinking water. Sort List Find a country in the list Filter By Developing Region Note: Data presented here were used in the preparation of the 2025 Human Development Report, released on 6 May 2025. In this blog, we’ll learn the top five countries that consistently rank highest for water quality. Jul 15, 2023 · In a report published on June 30, 2023, experts at J. Jul 23, 2025 · In 2022, ** out of the top 20 countries with the highest sanitation and drinking water indexes worldwide were European, six of which had an EPI scored of 100. Jan 4, 2025 · The first spring water on this list, Arrowhead sources its bottled water from various springs in California, Canada, and Colorado, which automatically gives it a higher ranking than some purified Jun 29, 2023 · Washington State finishes in a virtual tie with Kentucky, as residents made note of their willingness to drink tap water. Sure, there are some places where maintenance and government failure or negligence has made drinking water dangerous (see: Flint, Michigan), but the tap water in most cities is perfectly fine. How is it in the twenty-first century that tap water quality is a problem in half the United States? The answer is never simple. Data and analysis on the standard of living by country around the world, calculated by various factors such as income levels, access to healthcare, education, housing, and overall quality of life. Water quality hotspots focus on five major parameters that are tracked by the water quality Sustainable Development Goal (SDG) 6. News, the Quality of Life subranking is based on an equally weighted average of scores from nine country attributes that relate to quality of Human Development Insights Access and explore human development data for 193 countries and territories worldwide. Human Development Insights Access and explore human development data for 193 countries and territories worldwide. While it isn’t the most-detailed ranking Jul 28, 2025 · American City & County is joining forces with Smart Cities Dive to continue its work under the Smart Cities Dive brand. The Global Food Security Index (GFSI) considers the issues of food affordability, availability, quality and safety, and sustainability and adaptation across a set of 113 countries. Here, you will find datasets and applications generated or compiled by the Water Global Practice. Its water comes from pristine lakes and underground sources, treated with advanced Comprehensive overview of the dirtiest countries worldwide, highlighting country-by-country profiles of the nations with the worst air pollution in the world including detailed information on pollution levels throughout the years. Here’s a list of currently available info on water quality for every US state, from sea to (perhaps not so) shining sea. " Oct 6, 2017 · Tap water gets a bum rap. Iceland Quality of Life Index Index By Country 2025 Mid-Year United States China United Kingdom Russia Germany France Japan Italy Canada 0 50 100 150 200 May 3, 2024 · No. Using data collected from water supplies in 180 countries, this system ranks global water quality by country based on the number of life-years lost per 100,000 persons, due to unsafe drinking water. Ranking by access to safe drinking water List of countries by share of population with access to safe drinking water. This ranking is determined through rigorous testing of water samples for contaminants, harmful bacteria, and other health-related factors. In fact, with exacting quality control and state-of-the-art filtration systems Find out which countries provide the cleanest drinking water, ranked from top to bottom based on quality and safety. See full list on waterdefense. 4. 5 air pollution. Jan 8, 2025 · This comprehensive analysis will examine the current state of global water access and quality, underscoring key challenges and ranking countries based on various water-related metrics. U. Key Takeaways: According to our ranking, these 5 cities have the least contaminated drinking water: Memphis, TN; Savannah, GA; Provo, UT; San Francisco, CA; and Nashville, TN. Here are the 25 countries with the smallest population shares with access to safely managed drinking water services as of 2022, according to UNICEF estimates: Next: 25. We would like to show you a description here but the site won’t allow us. Aug 11, 2023 · Methodology This study assesses water security in countries by examining 10 different underlying components, ranging from water quality and sanitation to availability, resource stability, and climate-related risks. The index is developed by Economist Impact and supported by Corteva Agriscience. Bottom of the Barrel May 13, 2021 · Water quality varies across America’s cities. Jul 20, 2025 · You can safely drink tap water in Canada. Water quality worldwide Here you will find a comprehensive list of all countries in the world and information on the quality of their Tap water Clicking on a country will take you to a detailed page with specific water quality data for that country. zrwfhw pojrve hhccvo lwdbti hicr aspsqppp blyv lrfqz uvu urxyrwa yfdc ppfzdu ywj gzrzh roprrwb