What is a commonly known disinfectant used in pool maintenance?

In pool maintenance, effective disinfectants are crucial for ensuring water safety and hygiene, and each option mentioned plays a role, but the most recognized and widely used disinfectant is chlorine. Chlorine is specifically known for its effectiveness in killing pathogens such as bacteria and viruses present in pool water. It works by releasing chlorine gas, which reacts with water to form hypochlorous acid, the active form that sanitizes.

While ozone and UV light are also valuable methods of disinfection, they are often used in conjunction with chlorine rather than as standalone solutions. Ozone is a strong oxidizing agent and is effective at eliminating organic contaminants, but it dissipates quickly and does not leave a residual effect in the water. UV light is effective in neutralizing microorganisms but also does not provide residual disinfection; it is typically used to supplement other methods.

Since all these methods can work together to enhance water quality, the option indicating all of the above reflects a comprehensive understanding of pool maintenance practices, acknowledging that while chlorine is the most well-known and widely used, ozone and UV light also contribute to the overall disinfection strategy.