The capability of silver to render potable liquid safe for consumption is a phenomenon stemming from the oligodynamic effect. This effect describes the biocidal action of small amounts of heavy metals, including silver, against a wide range of microorganisms. Silver ions (Ag+) disrupt essential cellular processes in bacteria, viruses, and fungi, inhibiting their growth and replication. As an example, silver-infused filters can be incorporated into water filtration systems to reduce microbial load.
The antimicrobial property of silver has been recognized for centuries, with historical records indicating its use by ancient civilizations for water storage and preservation. Modern applications leverage this characteristic in various forms, including silver nanoparticles, silver-coated ceramics, and silver salts, to combat waterborne pathogens. The deployment of silver-based technologies in water treatment can provide a relatively simple and cost-effective method for disinfection, particularly in resource-limited settings where advanced treatment infrastructure is unavailable. Furthermore, its use can contribute to preventing waterborne diseases and improving public health outcomes.