You Shouldn’t Drink Hot Water From Your Tap
Household tap water is usually heated in a hot water tank or by an inline water heater. Water tanks particularly, collect sediments overtime and are breeding grounds for bacteria. You might be thinking that bacteria cannot survive in hot water, but you need water above 165 degrees Fahrenheit to kill most bacteria. That’s why your meat thermometer recommends you cook chicken until that internal temperature is reached.
Hot water also dissolves contaminants such as lead that may be found in the solder of your hot water pipe. Newer copper tubing and fittings or PEX (plastic) pipes would be safer in this respect.
If you’ve ever read the manual for your coffee maker, it clearly states that you should make coffee using cold water. This is not because the temperature of the water makes better coffee, it’s because you should only consume tap water from the cold side of the tap.
If you need water that is always hot, there are food grade water heaters that you can use. For example, you may have a water cooler/heater or an installation under your kitchen sink for dispensing water that is always hot. Otherwise, always use cold water and then heat it in a kettle, microwave, pot…etc.
Photo: Malla Mi (Creative Commons)