Copper is easily worked and joined, it is inert to most potential contaminants and trace impurities in mains water, it is non-toxic, it is moderately cheap
Copper was good, mainly because it doesn't rust. Now there many pipes in plastics such as PEX, which are infinitely better than copper. Nobody smart uses copper any more.
Copper Wire, Copper Water Pipes, Pennies,
Copper has several redeeming qualities. It last long, does not rust, and won't grow bacteria. It also does not interact with water, making it good for pipes.
It conducts heat and electricity very well. It is good in pipes for keeping the heat in the water.
Very good BUT you cannot have the velocity exceed 8 FPS
Good for anal
Copper pipes are perfectly safe. If you were to consume too much copper you could then suffer from copper toxicity, however metallic copper is not very soluble in water, and you will not get any excessive amount being dissolved by using copper pipes. Also note that in very small amounts, copper is actually beneficial, since it is a necessary trace element. So copper pipes are good. Or what I was told is that the Romans drank out of copper pipes and they all went mad but that's what i heard.
They don't rot out like galvanized does, easier to work with, good with pressure.ANS 2 - ALL copper pipes eventually develop pinholes. MUCH better to go PEX for interior water piping !
properly installed - yes
Galvinized piping fell out of favor because they a-didnt last as long as the new copper pipes and b-there was concern about the zinc coating contaminating water. If there in good condition for 70 years your probably fine. If your concerned have your water tested for lead and zinc.
Copper is a good choice for a gasket because it has the capacity to form a good water-tight seal. It is softer than steel, and under pressure will deform slightly, which enables it to make a better fit.
Copper pipes and wires, furniture made of metal (like chairs, tables, cupboards, filing cabinets), metal gutters and down-pipes, metal fences, concrete reinforcement bars (re-bars) made of steel, corrugated iron sheeting, other sheet metal items, etc.