When traveling to a region with uncertain water safety, which recommendation best reduces risk from water and ice?

Rely on local tap water because long-term residents have adapted to it and the microbes present will not affect short-term visitors, making bottled water unnecessary.

Use untreated river water for drinking and ice production because natural sources are always preferable to municipal systems when traveling in rural areas.

Drink bottled water with an intact seal, avoid ice in drinks unless you know it was made from safe water, and use bottled or boiled water for brushing teeth.

Only consume alcoholic beverages because alcohol content neutralizes all waterborne pathogens and ice safety is irrelevant when alcohol is present.