If tap water must be used in an emergency in Bali, what provides an extra layer of protection?

Answer

A quick swish with an antibacterial mouthwash afterward

In a genuine emergency where using tap water for oral rinsing is unavoidable, an additional, albeit non-guaranteed, protective measure should be taken immediately after use. This measure involves utilizing an antibacterial mouthwash for a quick rinse following the use of the tap water. This step is intended to help neutralize or kill any microbes contacted during the emergency rinsing, serving as a supplemental barrier against potential waterborne contaminants when safer options are unavailable.

If tap water must be used in an emergency in Bali, what provides an extra layer of protection?
BaliSafetywatertoothbrush