What pH Should Drinking Water Be?

Water is a fundamental element for life, and the quality of the water we consume can significantly impact our health and well-being. One crucial aspect of water quality is its pH level, which measures the acidity or alkalinity of the water. Scientists have varying opinions on the ideal pH of drinking water. In this comprehensive guide, we’ll explore the topic of drinking water pH, understand its significance, and present insights from scientists on the matter. For more information on the pH levels of bottled water, visit site for a comprehensive list of the highest pH water options available.

The Basics of pH

pH is a measure of the acidity or alkalinity of a substance and is expressed on a scale from 0 to 14. A pH of 7 is considered neutral, while pH values below 7 are acidic, and values above 7 are alkaline (or basic). The pH scale is logarithmic, meaning that each whole pH value below 7 is ten times more acidic than the next higher value, and each whole pH value above 7 is ten times more alkaline than the next lower value.

The Importance of pH in Drinking Water

The pH level of drinking water is essential because it can influence the taste, safety, and potential health benefits of the water. Here are some key aspects of pH in drinking water:

1. Taste

The pH of water can affect its taste. Water with a pH that is too low (acidic) or too high (alkaline) may have an unpleasant taste, which can deter people from drinking enough water.

2. Corrosion

Highly acidic water can be corrosive and may damage plumbing systems, causing lead or other harmful metals to leach into the water. This can have serious health implications.

3. Health

The pH of drinking water can influence the body’s pH balance. While the body naturally regulates its pH, extremely alkaline or acidic water may have an impact on this balance.

4. Chemical Reactions

The pH of water can affect the chemical reactions that occur within it. For example, certain chemicals used in water treatment processes work optimally within a specific pH range.

The Ideal pH of Drinking Water

There is no universally agreed-upon ideal pH for drinking water because it can vary depending on several factors, including personal preference and health conditions. However, there are some general guidelines:

EPA Guidelines

The United States Environmental Protection Agency (EPA) recommends that the pH of drinking water should be between 6.5 and 8.5. This range is considered safe for consumption and is unlikely to cause any adverse health effects.

WHO Guidelines

The World Health Organization (WHO) provides a similar guideline, suggesting that the pH of drinking water should ideally fall between 6.5 and 8.5 for both health and taste considerations.

Personal Preferences

Some individuals may prefer drinking water with a specific pH level for taste reasons. For example, slightly alkaline water with a pH of around 8 may have a smoother taste that some people find more enjoyable.

Insights from Scientists

Scientists have conducted various studies and investigations to determine the potential health benefits of consuming water with specific pH levels. While opinions vary, here are some insights from scientific research:

Acidic Water

Some research suggests that water with a slightly acidic pH (below 7) may have antioxidant properties and can help neutralize harmful free radicals in the body.

Alkaline Water

  • Alkaline water, with a pH above 7, is thought by some to have potential health benefits, such as aiding in digestion and reducing acid reflux symptoms. However, more research is needed to confirm these claims.
  • Some studies indicate that alkaline water may help hydrate the body more effectively than regular water. This is due to its smaller molecular cluster size, allowing for better absorption.
  • Research is ongoing to determine if alkaline water has potential benefits for individuals with certain health conditions, such as acidosis or high blood acidity.


The ideal pH of drinking water is a topic of ongoing research and debate among scientists. While regulatory guidelines suggest a safe pH range for drinking water, individual preferences and potential health benefits associated with specific pH levels have led to varying opinions. It’s essential to consider both personal preferences and scientific insights when choosing the pH of your drinking water.

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