Importance of pH in Drinking Water
- Published:
- Updated: November 15, 2024
Summary
The pH level of drinking water is crucial for its safety and quality. Ideally, drinking water should have a pH between 6.5 and 8.5 to ensure it is safe for consumption and does not cause health problems. Deviations from this range can lead to issues such as the presence of heavy metals, digestive problems, neurological issues, bone disorders, and anemia. Factors affecting pH include the water source, environmental influences, industrial and agricultural activities, and the presence of minerals. Maintaining proper pH levels requires regular testing, neutralizing agents if necessary, utilizing water treatment systems, and considering natural water sources. Treatment methods can impact pH levels, with some processes removing minerals and others adding them. Ensuring the pH level of drinking water is within the safe range is vital for safeguarding public health.
pH is a value that describes how acidic or basic a solution is, and is represented as a number from 0 to 14. The pH of water for drinking is relevant as the pH will affect how the water tastes, looks and smells, as well as how much it will dissolve minerals and other materials. It also controls minerals and metals’ solubility in water – which impacts availability of crucial minerals, and the likelihood of noxious contaminants.
The pH of water is a major determinant of whether it’s suitable and safe for human consumption. The pH is "potential of hydrogen" which is the acidity or basicity of a solution. On the pH scale it is 0–14, where 7 is neutral, under 7 acidic, over 7 basic or alkaline. The pH of the water that people drink needs to be in some range so that it can be used by them safely.
What is Ideal pH range for drinking water?
Ideally, the pH of water to drink should be between 6.5 and 8.5. The water that’s in this range is never toxic for human consumption or has health issues. : Your water should not be lower than that pH level as it will either lead to the addition of corrosive elements or a reduction in the minerals in the water.
Effects of pH levels outside the safe range
If the pH of water is above or below a permissible limit, human health might be compromised. For instance, if the pH is too low (acidic), heavy metals like lead and copper could be released into the water leading to stomach aches, neurological disorders and anemia.
Conversely, if the pH is too high (alkaline), then it could produce toxicity factors like aluminum which in turn leads to diseases like kidney failure, bone disorders, and anemia. Not to mention the fact that water that has a pH outside of recommended limits can taste, smell and appear different, and people will tend not to drink it.
Factors that affect the pH level of drinking water
- Source of the water: The source of the water, whether it is from a well, a spring, or a municipal water supply, can affect the pH level of the water. Some sources may naturally have a higher or lower pH level, which may need to be adjusted through treatment.
- Environmental factors: Environmental factors, such as acid rain, can also affect the pH level of drinking water. Acid rain can lower the pH level of water, making it more acidic, and can release harmful substances into the water.
- Industrial activities: Industrial activities, such as mining and manufacturing, can also affect the pH level of drinking water. These activities can release harmful substances into the water, which can lower the pH level and make the water more acidic.
- Agricultural practices: Agricultural practices, such as the use of pesticides and fertilizers, can also affect the pH level of drinking water. These substances can seep into the water supply and lower the pH level, making the water more acidic.
The role of minerals in drinking water
Minerals play an important role in maintaining the pH level of drinking water. Some minerals, such as calcium and magnesium, have a basic or alkaline effect on the water and help to raise the pH level. Other minerals, such as carbon dioxide, have an acidic effect on the water and help to lower the pH level. The presence of minerals in drinking water also affects its taste, color, and odor.
How to maintain the pH level of drinking water?
There are several methods for maintaining the pH level of drinking water, including:
- Regular testing: Regular testing of the pH level of drinking water is crucial for maintaining its safety and quality. This can be done using pH test strips or a pH meter. Regular testing will allow you to monitor the pH level of your drinking water and take action if necessary to ensure that it remains within the safe range.
- Neutralizing agents: If the pH level of your drinking water is too low or too high, neutralizing agents can be added to adjust the pH level to within the safe range. For example, if the water is too acidic, an alkaline substance such as baking soda can be added. If the water is too alkaline, an acidic substance such as vinegar can be added.
- Water treatment systems: There are several water treatment systems available that can help to maintain the pH level of drinking water. These systems can remove harmful contaminants and add essential minerals to the water to ensure that the pH level remains within the safe range. Some common water treatment systems include reverse osmosis, distillation, and ion exchange.
- Natural sources: If you have access to natural sources of water, such as springs or wells, you may want to consider using these sources as a way to maintain the pH level of your drinking water. Natural sources of water often contain minerals that help to maintain the pH level and ensure that the water is safe for human consumption.
The impact of treatment methods on the pH level of drinking water
These filters are used to clean water for consumption, which may impact the pH level of the water. Reverse osmosis and distillation, for instance, leach minerals out of the water and make the water acidic. Alternatively, if you treat it with minerals (like calcium and magnesium), this will make the water acidic.
The effects of pH level on different health conditions
- Constipation: If the pH of tap water is low, you might get acid reflux and heartburn. That’s because the pH of the water can make the lining of the stomach and esophagus itch.
Headaches, Dizziness : If drinking water is pH lower than 8.4, it can affect the brain with headaches and dizziness. That’s because the low pH of the water can throw the body’s electrolytes out of whack.
Bone diseases: If the pH of the drinking water is too high, bone diseases like osteoporosis can occur. Because the water’s pH is very acidic and can interfere with calcium absorption – the building block of healthy bones.
Anemia: During anemia, your drinking water might have a pH that is too low or too high which can lead to anemia (a deficiency of red blood cells in the body). This is because water’s pH — low or high — will disrupt iron absorption, needed to make red blood cells.
pH of water is a major determinant of its quality and safeness for humans. You should always keep the pH within the safe range of 6.5 to 8.5 so that the water is not contaminated with contaminants and has vital minerals. Regular testing, neutralizing chemicals, water purification systems and natural sources of water are all ways to maintain the pH of drinking water.
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