What is swimming pool chlorine?

Chlorine is a chemical element with the symbol Cl and atomic number 17. It is a halogen, and is the second lightest halogen after fluorine. Chlorine is a highly reactive element and forms a variety of compounds, many of which are used as disinfectants, bleaches, and solvents.

In swimming pools, chlorine is used as a disinfectant to kill bacteria and other microorganisms that can cause disease. Chlorine works by oxidizing the cell walls of microorganisms, causing them to break down and die. Chlorine also reacts with organic matter in the pool, such as sweat, urine, and body oils, to form chloramines. Chloramines are also disinfectants, but they are less effective than chlorine and can cause eye irritation and respiratory problems.

The ideal chlorine level for a swimming pool is between 1 and 3 parts per million (ppm). This level is high enough to kill bacteria and other microorganisms, but low enough to avoid causing eye irritation and respiratory problems. The chlorine level in a swimming pool should be tested regularly and adjusted as needed.

Chlorine is an essential chemical for swimming pools, and it helps to keep swimmers healthy and safe. However, it is important to use chlorine correctly and to follow the manufacturer's instructions for use.