If they do happen to use water from the tap for drinking they always seem to boil it first before consuming. Their water supply is mostly treated raw sewage. That's why the water is brown looking when they have bath's and showers.
Sure glad I don't have to go through that on an almost daily basis. The water at my place is clear 99% of the time.Never a problem with hot or cold water unless the boiler in the basement malfunctions. The only time I see brown water is when the City Maintenance flush the water lines twice a year and that's just a temporary problem.