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Not to mention, hot water tanks are a prime facility for some of these pests to grow while most people have no idea they should avoid their home hot water for anything other than washing. It should not be consumed in any way... this is why coffee makers specifically tell you to use cold water.

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Lead dissolving in hot water is the primary reason that one should not consume hot tap water. Nor should one wash their hands with hot water after lead exposure. Some gun ranges go so far as to remove the hot water tap from the bathrooms.

Pretty sure that is because of metals. Living things die when boiling anyway

The temperature of a typical hot water tank is 120-140 degrees Fahrenheit, which is significantly less than the boiling point of water, 212 degrees Fahrenheit. If the water tank temperature is just a little lower, at 115 degrees, it's the prime temperature for these buggers.

Also, this might be a fun read for you: https://en.m.wikipedia.org/wiki/Thermophile

Hot water tanks aren't hot enough to sterilize. In fact, they're a perfect temperature to grow many things.

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