Balancing the Pros and Cons of Chlorine in Our Drinking Water
- Published:
- Updated: December 16, 2024
Summary
Balancing the pros and cons of chlorine in drinking water is essential for making informed decisions about water treatment:
Pros of Chlorine:
- Effective Disinfectant: Chlorine effectively kills harmful bacteria and pathogens, reducing the spread of waterborne diseases and improving public health.
- Low Cost: Chlorine is relatively inexpensive and readily available, making it a cost-effective option for water treatment.
- Long-Lasting Effect: Chlorine remains active in the water supply for several days, providing ongoing protection against contaminants.
Chlorine is also a common disinfectant in drinking water. The benefits of chlorine, killing off pathogens and generally making our water safe, are vast but there are risks. We should have the ability to weigh the pros and cons of putting chlorine in our water, so that we can decide whether or not to use this precious commodity.
What is Chlorine and How Does it Work in Drinking Water?
Chlorine is a chemical compound, whose symbol Cl means Greeny-Yellow Gas at room temperature. Most people disinfect their drinking water, pools and hot tubs with chlorine because it kills a wide range of bacteria and pathogens, such as E coli and salmonella.
Add chlorine to water, and it reacts with the water to create hypochlorous acid, chlorine’s active disinfectant form. It’s a powerful oxidant, which kills bad bacteria and viruses by removing their cell walls. What chlorine you add to water is based on the contaminants and the size of the water supply.
Pros of Chlorine in Drinking Water
- Effective Disinfectant: Chlorine is an effective disinfectant and has been used for over a century to kill harmful bacteria and pathogens in our drinking water. The use of chlorine has greatly reduced the spread of waterborne diseases, such as cholera and typhoid fever, and has helped to improve public health.
- Low Cost: Chlorine is a relatively low-cost disinfectant, making it an attractive option for water treatment facilities. In addition, chlorine is readily available, making it easy to obtain and use in large quantities.
- Long-Lasting Effect: Chlorine has a long-lasting effect, and it remains active in the water supply for several days, providing ongoing protection against harmful bacteria and pathogens.
Cons of Chlorine in Drinking Water
- Formation of By-Products: When chlorine reacts with organic matter in the water, it can form by-products, such as trihalomethanes (THMs) and haloacetic acids (HAAs). These by-products have been linked to an increased risk of cancer and other health problems, and they can also give the water an unpleasant taste and odor.
- Corrosion of Plumbing: Chlorine can cause corrosion of plumbing and fixtures, leading to the release of lead and other harmful metals into the water supply. This can pose a serious health risk, particularly for children and pregnant women.
- Irritation of Skin and Eyes: Chlorine can irritate the skin and eyes, and it can also cause respiratory problems in some people. This is particularly true for those who are sensitive to chlorine, such as asthmatics and people with other respiratory conditions.
Evaluating the Pros and Cons of Chlorine in Drinking Water
Chlorine is a potential con but it is still a good disinfectant and crucial to the health of our water supply. But the secret to successfully weighing the benefits and drawbacks of chlorine is to use only the appropriate amount, and to test the water frequently for contaminants (by-products and not).
Furthermore, water treatment plants can reduce by-products by, for example, flushing organic matter out of the water before adding chlorine. This can lower the THMs and HAAs in your body and mitigate some of the health hazards of these by-products.
The average consumer can also do something to minimise their consumption of chlorine-rich water, including a home water filter. These pumps can filter chlorine and other contaminates from the water, making it safer and taste better.
We should also maintain and replace filters in home filtration system on a regular basis so that they work properly. Consumers can also reduce their exposure to chlorine by avoiding things that release chlorine into the air, like showering, cooking and cleaning with chlorinated water.
The Importance of Water Treatment Facilities in Balancing the Pros and Cons of Chlorine
Water treatment plants make all the difference between the benefits and risks of chlorine in water. It’s up to them that the water is added the correct chlorine level, and that the water is tested on a regular basis for contaminants, including by-products. They can also do their part to minimise the presence of by-products, like removing organic matter from the water before mixing it with chlorine. It prevents the health risks caused by these by-products from being high, and ensures that the water you drink is healthy for you to drink.
But water treatment plants are not all the same and not every plant has the time or resources to weigh the merits and demerits of chlorine. The consumer can help keep their water treatment plant up and running by being informed about water treatment and lobbied for better water treatment.
The Role of Consumers in Balancing the Pros and Cons of Chlorine
In part, the weigh-ups among consumers for and against chlorine in water come down to consumers. They will also be able to lower their chlorine and other toxins exposure with home water filtration systems, and their drinking water will be safe and healthy. They can also avoid being exposed to chlorine by doing nothing that obliterates the chlorine, such as taking a shower, cooking, or cleaning with chlorine-laden water.
Customers can also get information about water treatment and promote better water treatment by calling their water treatment facilities, attending local meetings, and funding organizations dedicated to water quality. Consumers who are actively involved in their water’s quality can help balance the chlorine benefits and disadvantages so that their water remains clean and healthy for everyone to drink.
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