Is San Francisco tap water safe to drink?

Answer 1

SF tap water is actually rated one of the best in the country. http://articles.sfgate.com/2008-03-11/bay-area/17165673_1_drinking-water-test-results-water-quality

In general, tap water is the better alternative. Tap water is regulated by the EPA, while bottled water is regulated by the FDA. The EPA has stricter standards for pollutants and more regulatory muscle, thanks to $10.02 billion FY 2010 budget versus the FDA's $3.2 billion. Bottled water also presents the possibility of leaching plastic, especially if the bottle gets hot.