[Rephrased -mod]
Can you explain whatever it is that's making you laugh specifically, and provide information to further the discussion?
Mods: Apologies in advance if this post constitutes unauthorized moderation.
After thirty+ years in the industry (self employed over half that time) as a licensed plumber (specializing in service and repair) in three different states, I can say that some of the replies are a bit suspect, not enough to get your panties all bunched up but enough to cause a chuckle, sorry not interested in picking on any one post but the best information I've seen posted in this thread is to regularly flush your water heater, that thing should go fifty or more years and it will with regular maintenance.
Once a scale is formed in the water pipes (doesn't take long) then the water passing through them is isolated from the pipe, fittings, and solder joints, no more contact, no leaching. Acidic water can be a problem and is typically addressed at the municipality level, that is what happened in Flint Michigan, they changed to an acidic water supply and did not do enough adjustment for it and the acidic nature of the water not only exposed the lead but leached it into solution. As an aside, leaded solder was basically outlawed with the other lead products when California banned high lead content, before I started plumbing. Plumbing solder is comprised of 95% tin and 5% antimony, or 95/5.
If you live in a house built after about 1996 then your house water pipes could be pex, or a combination of pex and copper.
Speaking of municipality water purveyors, many city connections (depends on location) are a lead tap with lead wiped support for the taps from the water main to the corp stop, from there the residential/commercial supply lateral goes to the building, many areas are finally getting around to replacing their taps. I found these in Wisconsin working for a plumber that did the heavy lifting for the city.
I would never draw water off the bottom of my tank type water heater to brew with, If the dip tube is compromised (happens all the time) then you are not circulating that tank completely with use, dip tubes are plastic and become brittle with time and will break off in the water heater as they decompose, water heaters can be a breeding ground, dark warm and stagnant. If you take a functually perfect fifty gallon water heater but only run about five or ten gallons of water a week through it, it will grow a nasty smelling black sludge in the bottom. Tankless water heaters are a great idea, they are just more maintenance and require a vinegar (acidic) flush annually to flush the hard water deposits from the copper heat exchanger to keep the flow rates up and protect the equipment warranty.
The state of Oregon is on the cutting edge of clean water technology, most all of the other states are taking their cues from Oregon and how we are protecting our water shed. When the human body is made up of 60% or so of water it makes sense to drink your supply upstream of the herd.
Hope ya all have a good day.