The term refers to the process of adding a high dose of chlorine or a non-chlorine shock treatment to swimming pool water. This procedure rapidly raises the sanitizer level to break down combined chlorine (chloramines) and other organic contaminants that can cause cloudy water, unpleasant odors, and irritation to swimmers. It’s essentially a super-chlorination or oxidation process intended to restore water quality.
The practice is vital for maintaining a safe and sanitary swimming environment. By eliminating unwanted organic matter and chloramines, it improves water clarity, reduces the risk of algae growth, and minimizes the potential for bacterial and viral infections. Historically, methods for disinfecting water have been crucial for public health, and this specific application extends those principles to recreational water facilities. Regular application is an essential component of comprehensive pool care.