Hawaii consistently ranks as the U.S. state with the cleanest tap water, boasting a near-perfect score of 99.9 out of 100 on federal EPA data. The state's water is naturally purified through porous volcanic rock into deep underground aquifers.
There is no single state with universally the "worst" tap water, as quality varies by utility. However, based on high contaminant counts, EPA violations, and population exposure, Texas and New Jersey consistently rank at the bottom.
There is no single "cleanest" city, as rankings vary based on whether the focus is on a lack of contaminants, federal compliance, or taste. However, Memphis, Tennessee and Sioux Falls, South Dakota consistently rank at the top for tap water purity.
The "healthiest" water depends on your personal nutritional goals—such as needing more electrolytes or a naturally alkaline pH. The top five natural and mineral-rich brands frequently recommended by experts and dietitians include:
New Jersey has the most highly contaminated drinking water system, with 556 systems. There are approximately 294,554 active lead pipes that need to be replaced. At least 379 water systems, serving more than 5 million residents, have detected elevated levels of TTHMs in their supply.
No U.S. state completely bans or prohibits drinking tap water. However, all tap water contains varying levels of contaminants. Several states face significant water safety or quality concerns—ranging from aging lead pipes to agricultural runoff—making certain municipal or rural supplies unsafe or unpalatable without filtration.
🌍💧 99% of all liquid freshwater on Earth is hidden underground as groundwater. It quietly powers our daily lives, supplying nearly 50% of drinking water, 40% for irrigated agriculture, and 35% for industries. Yet, population growth, pollution, and climate change are putting this vital resource under increasing stress.
Approximately 64% of all bottled water in the U.S. is sourced from municipal tap water. Major brands package local tap water, then purify it using reverse osmosis and typically add minerals for taste.
Cardiologists warn against drinking from plastic bottled water primarily due to microplastics, nanoplastics, and chemical additives. These contaminants are shed from the bottles themselves and can directly impact your cardiovascular health.
Boiling water is an excellent way to sanitize it, as high temperatures kill disease-causing microorganisms like bacteria, viruses, and parasites. However, it does not purify the water because it does not remove physical sediment or chemical contaminants like heavy metals and PFAS.
Tap water quality varies significantly across the U.S. based on industrial runoff, aging infrastructure, and chemical treatments. Cities with the worst tap water often feature high levels of contaminants like PFAS, lead, or radioactive byproducts.
Boiling is the most effective way to kill waterborne parasites like Giardia and Cryptosporidium. Bring water to a rolling boil for at least 1 minute (or 3 minutes if you are above 6,500 feet).
Safety. Both are safe, although each is regulated by different agencies. Bottled water is regulated by the Food and Drug Administration (FDA) and is tested for contaminants similar to tap water. Tap water, on the other hand, is regulated by the Environmental Protection Agency (EPA) under the Safe Drinking Water Act.
There is no single state universally recognized as having the "worst" water quality, as rankings vary depending on whether the focus is on raw waterway pollution, lead infrastructure, or Safe Drinking Water Act (SDWA) violations. However, Pennsylvania, Texas, New York, and West Virginia consistently rank among the worst.
The following ten states have the best drinking water in the country:
Drinking water contamination is widespread across the U.S., with the EPA reporting PFAS ("forever chemicals") in all 50 states. States like California, Arizona, and Texas are heavily impacted by multiple contaminants (like arsenic and chromium-6), while states including Pennsylvania, New Jersey, and New York frequently rank high for tap water violations.
The #1 worst drinks for your heart are sugar-sweetened beverages (SSBs), such as regular sodas, sweetened fruit juices, sports drinks, and energy drinks. Cardiologists and medical bodies consistently rank these highest in danger due to their ability to drive up inflammation, blood pressure, triglycerides, and heart disease risk factors.
The 10-gulp rule is a hydration habit designed to help you easily meet your daily water intake goals. The rule is simple: Every time your water bottle or glass touches your lips, take exactly 10 large gulps before putting it down.
Bottled Water Can be Contaminated
Most bottled water is likely safe. However, the bottled water industry does not have a perfect track record. An article from CBS.com states there have been more than 100 recalls of bottled water. The article lists common water contaminants like algae, types of bacteria, and chlorine.
The healthiest bottled waters are defined by their natural electrolytes, pristine deep-well sources, and eco-friendly packaging. Leading options include:
Depending on your criteria, the "#1" water varies: Evian is frequently ranked as the top premium/cleanest bottled water, Fiji is the top pick for taste, and Aquafina is the highest-selling by volume. Generally, natural spring waters are considered the healthiest options.
The "worst" bottled waters generally fall into two categories: those that are simply glorified, heavily filtered municipal tap water (often tasting minerally or salty), and those linked to contamination, environmental violations, or misleading marketing.
Maryland is the only U.S. state with absolutely no naturally formed lakes.
No, life on Earth will not exist forever. Scientists estimate that all life will go extinct in about 1 billion to 1.5 billion years as the Sun gradually grows brighter and hotter, boiling away our oceans. Ultimately, the Earth itself will likely be swallowed by the Sun when it becomes a red giant in about 5 to 7.5 billion years.
The ocean holds about 97 percent of the Earth's water; the remaining three percent is found in glaciers and ice, below the ground, in rivers and lakes. Of the world's total water supply of about 332 million cubic miles of water, about 97 percent is found in the ocean.