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Stored water can develop slimy bacterial films: Nanotechnology may be a solution

When drinking water is stored in containers, a thin layer of microorganisms can grow at the interface of the container and water. This thin layer is called a biofilm. It's made up of bacteria that make the water unsafe to drink. Slimy biofilms are harder to kill with ordinary disinfectants like chlorine. So scientists are always looking for new ways to clean water in household storage systems.

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