If you have good water coming out of your faucet consider yourself lucky. That is definitely not the case everywhere. My water has stuff floating all over it. I have refillible gallons of water that I pay $.39 for(filtered water from the supermarket) and I occasionally get a pack of 500ml water bottles as well when they are $.10/bottle or less.
The tap water we received back in California (Silicon Valley) was like this. There were days you could fill a pot to boil water, and a white cloud would prevent you from seeing the bottom of the pot. Bathroom and kitchen fixtures quickly became marred with whatever was coming from the tap, which included an excessive amount of what smelled like chlorine. So, we never drank the Bay Area water.
I question the "safety" of tap water in the Bay Area. For the longest time, we gave our cats tap water. Given their dry food diet (at the time), they drank a lot of it. Over the years, we lost many of our cats to sudden health issues related to the liver and kidneys. These cats died between the ages of 9 and 12, which for indoor cats is a bit too young. About 10 years ago, we started giving our cats the same bottled water we drank, and about 5 years ago we started replacing part of their dry food diet with wet (canned) food. Two of our cats are now 12 and 13 (a 3rd is 8), and both had very good test results last month. It saddens me to think that the tap water back in the Bay Area might have been detrimental to our cats' health.
Here in central Texas, the water is fine, but it is very hard. Because of that, we have a water softener installed in the house we purchased last year. We actually used tap water a couple of days before the installation, and water this hard really dries the skin. While there are debates about whether it is safe to drink salt-softened water, it doesn't taste very good. So, we're still using bottled water.
I only wish we could find a store that sells steam-distilled drinking water to refill 3 and 5 gallon dispenser bottles. It works well for coffee and tea makers, making ice, for cooking, and for drinking. Alas, I have not found one like we had back in Campbell and San Jose.