Chlorine is one of the most common contaminants found in drinking water. While it’s a strong disinfectant, this chemical has numerous undesirable properties, from its distinct taste and odor to the potential for skin, eye, and respiratory irritation to long-term health risks. Chlorine also has corrosive effects that can damage appliances. 

Fortunately, whole-house water filtration systems can remove chlorine from drinking water. And there are other ways to effectively treat water without using this potentially harmful compound. Answers to the following questions will help you understand the risks of chlorine in your water supply and how you can eliminate them.

What is chlorine used for in drinking water treatment?

Chlorine is commonly used as a disinfectant in drinking water treatment to kill or inactivate harmful bacteria, viruses, and other pathogens, helping to reduce waterborne diseases.

Does chlorine affect the taste and odor of water?

Yes, chlorine can impart a distinct taste and odor to water, often described as a “chlorine-like” or “swimming pool” smell. Some people find this unpleasant, especially in larger quantities.

Are there any health concerns associated with chlorine in drinking water?

Chlorine can react with organic matter in water to form disinfection byproducts (DBPs), such as trihalomethanes (THMs), which have been associated with potential health risks, including an increased risk of certain cancers and reproductive issues.

Can chlorine cause skin and eye irritation?

Yes, chlorine can cause irritation to the skin and eyes, particularly in individuals with sensitive skin or pre-existing conditions like eczema. Prolonged exposure to chlorinated water during bathing or swimming can lead to dryness, itchiness, redness, and other skin problems.

What is the environmental impact of chlorine?

Wastewater containing chlorine, when discharged into aquatic ecosystems, can harm aquatic organisms and disrupt ecosystems.

Can chlorine have respiratory effects?

Yes, inhalation of chlorine gas or chlorinated disinfection byproducts (DBPs) can irritate the respiratory system, causing symptoms such as coughing, wheezing, and shortness of breath.

What are disinfection byproducts (DBPs) and their associated risks?

When chlorine reacts with organic matter in water, disinfection byproducts can form. Some of these DBPs, such as trihalomethanes (THMs) and haloacetic acids (HAAs), have been associated with potential health risks, including certain cancers and reproductive issues.

Can some individuals have allergic reactions to chlorine?

Yes, some individuals may be allergic to chlorine or hypersensitive to its byproducts, leading to allergic reactions such as skin rashes, hives, or respiratory symptoms.

How does chlorine affect appliances in the home?

Chlorine can corrode and damage rubber gaskets, plastic components, and water-soaked metal objects, including pipes and the anode rod inside water heaters, potentially leading to appliance failures.

What are the effects of using chlorinated water for watering lawns and plants?

Chlorinated water can kill beneficial bacteria and microorganisms in garden soil, potentially damaging the roots of plants and grass.

How does chlorinated water affect animals and fish?

Chlorinated water can be harmful to fish and smaller animals that rely on tap water, potentially leading to kidney disease, joint problems, liver disease, and premature aging.

Can chlorine be removed from drinking water at home?

Yes, there are whole-house solutions available, such as those offered by Grasshopper Heating and Cooling, that can remove chlorine from municipal water as it enters your home, providing safe and chlorine-free water for all your faucets, appliances, lawn, pets, and family.

Will removing chlorine from drinking water address all the concerns associated with its use?

Yes, removing chlorine from drinking water can help address the taste, odor, health, skin irritation, environmental, respiratory, and other concerns associated with its use.

Is chlorine necessary for drinking water treatment?

While chlorine has been instrumental in reducing waterborne diseases, ongoing research and advancements in water treatment processes aim to ensure safe and quality drinking water without relying solely on chlorine. However, the use of chlorine remains an important tool in water treatment to ensure disinfection and protect public health.