Which of the following is a common method of decontamination?

The correct choice is boiling water as a common method of decontamination. Boiling water is an effective technique for eliminating pathogens, including bacteria and viruses, that may be present in water or on surfaces. The high temperature achieved during boiling makes it a reliable method for disinfection, as it can kill most microorganisms within a short period of time. This method is widely recognized for its simplicity and effectiveness, especially in emergency situations or where other forms of chemical disinfection are not available.

In the context of water well monitoring and management, ensuring that equipment and tools are properly decontaminated is crucial to prevent contamination of water sources. Boiling water can be particularly useful for sterilizing tools or equipment that come into contact with well water.

Other methods such as pressure washing, air drying, and precautionary storage, while they may have their own applications, don't specifically target microbial decontamination to the same extent that boiling water does and may not reliably eliminate harmful contaminants or pathogens. Thus, boiling water stands out as a well-established and trusted method in the realm of decontamination practices.