What does shocking the pool water with chlorine do?

Shocking the pool water with chlorine involves adding a large dose of chlorine to quickly raise its levels, effectively sanitizing the water. This process helps eliminate contaminants such as bacteria, algae, and organic matter, ensuring the pool remains clean and safe for swimmers. Additionally, shocking can help restore water clarity and balance chemical levels, especially after heavy usage or rainfall. It is typically recommended to shock the pool regularly or as needed to maintain optimal water quality.