What chemical is used in both water purification and sewage treatment to give long-term disinfection?

Question

Quizplus · Accepted Answer

Chlorine is commonly used in both water purification and sewage treatment to provide long-term disinfection. It is effective against a wide range of microorganisms and can remain active in water systems for an extended period of time, helping to prevent the growth of harmful bacteria and viruses. While other chemicals such as copper sulfate and activated charcoal may be used in some specific circumstances, chlorine is the most commonly utilized disinfectant in these applications.

What Chemical Is Used in Both Water Purification and Sewage