Which of the following is NOT typically considered a method of water disinfection?

Filtration is primarily a physical method used to remove particles, sediments, and microorganisms from water, rather than actively disinfecting it. While it can improve water quality by clearing out impurities, it does not eliminate pathogens through chemical or thermal means.

In contrast, chlorination involves adding chlorine to water, which effectively kills bacteria and viruses, providing true disinfection. Ultraviolet light works by using UV radiation to disrupt the DNA of microorganisms, also ensuring disinfection. Boiling water is a reliable method that kills pathogens through high temperatures, effectively rendering water safe for consumption. Thus, filtration stands out as the choice that does not fit within the commonly recognized methods of disinfection.