So kitchens and bathrooms need cleaned regularly. The moisture and food in these rooms specifically make it easy for pathogens to grow. Plenty of people get mould problems in their homes. Kitchens need cleaned with disinfectant sprays to make them safe to produce food in.
What about the inside of taps though? Depending on the age of your house, the pipes and taps could be decades old, and will have never been cleaned on the inside, yet we don’t think twice about pouring a glass of water. Why is this? How are the insides not full of rust, grime and bacteria?
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The water that flows through fresh water pipes and taps is usually treated and is reasonably clean and free of pathogens.
Most wells tap fossil water from deep underground that is also free of pathogens.
So there’s few molds and bacterial present. The water pressure tends to flush the insides of pipes clean, too.
Finally, many homes use copper pipes, a metal that is naturally anti-microbial and resists corrosion, and brass fittings, an alloy containing copper.
Copper kills most pathogens on contact so they cannot adhere to the walls of the pipe.
There are some modern plastic fresh water pipes (PEX) that can support biofilms, if the water source is contaminated.
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