As promised, A Giant Cartoon Map of the San Francisco Water System, from the San Francisco Public Utilities Commission.
Click on it to swim around and see where your tasty San Francisco wawa comes from. What’s that you say, what about lead and stuff? Well they test for that all the time, Silly Billy. What’s that you say, what about the lead solder that’s in the pipes in your building? Well, one thing you can do is let your water run for a bit to minimise exposure to the lead that’s leached into the water sitting in the pipes. It can’t hoit.
Anyway, click expand.