San Diego's tap water tastes truly awful. The first time I ever traveled to another city (Denver), I was forced to drink the tap water and could not believe how good it tasted.
San Diego has the worst tap water for drinking I have ever experienced in the US. When I lived there, pretty much everyone had a reverse osmosis system installed to make it drinkable.
Fortunately, I live in the Pacific Northwest currently, which generally has some of the best tasting water you’ll find anywhere. No one would dream of not drinking the tap water.
