It's never made sense to me that some people refuse to drink water even if they know it keeps you functioning properly. The same people will complain of constipation or dry skin but don't want to do the thing that fixes their issues.
The pipes in my residence are at least 60 years old, made of metal, and the resulting water tastes a bit suspect. I get water from the grocery store and put it in the water cooler. Costs about $10-20ish for 20 gallons, but probably far safer than what the tap provides.
The plumber a couple weeks ago showed me some pictures of the pipes from the inside. It explains why I needed filter cartridges for my shower, why my sink needed looking at, how come the toilet was losing flushing power, and why the water heater's recirculator never worked. Turns out, the thing burned out from debris.
This residence totally needs a revamp, well beyond my means. 😒