Why Is Chlorine Used in Swimming Pools?

Chlorine is an additive used in pools to keep the water safe and clean. Because pools are closed systems, you have to test the water periodically to ensure that the levels of chlorine in the water are acceptable. If the pool has too little chlorine or too much chlorine, the pool will be unsafe for swimming.

Kills Naturally Occurring Germs

• Chlorine kills germs that occur naturally when the water in a pool is exposed to the air. While these germs are all around us, in the closed environment of the pool the levels can become extremely dangerous.

Reduces Algae

• When water is exposed to sunlight, algae can form. Chlorine reduces the risk of algae forming by making the conditions in the water unfavorable for the algae.

Sterilize the Water

• Body fluids, including sweat and urine, contaminate pools. However, chlorine neutralizes these contaminants to make the water safe for swimming.

Reduce Odors

• Without chlorine in a pool, the water will begin to smell stagnant. Adding the appropriate amount of chlorine to the water will alleviate this smell.

Minimize Cloudiness

• Water in a pool can become cloudy without chlorine treatment. Adding chlorine to the water can reduce this cloudiness.