Although municipal water services ensure water is fit to drink and use without fear of getting sick, avoid regularly drinking from the bathroom sink. There is a risk of contamination from bacteria in the reservoir or tank, especially the hot water.
In most parts of the United States and Canada, it's safe to drink tap water from public water systems. Tap water that's been properly filtered is equally safe as bottled water and provides you with essential minerals you may not get from bottled water.
Once the water enters the home, however, it travels through pipes in the walls. The extra circulation of bathroom water also means that it's less likely to get a metallic taste from sitting in pipes, which can be another factor that causes tap water from the bathroom to taste different from tap water from the kitchen.
Stored water is more likely to be stale or contain bacteria. Some boilers use storage tanks, so hot water for drinks should be taken from the mains and boiled.
In the bathroom, the water is often very cold because the person getting a drink first uses the water closet (toilet) and flushes. Then they wash their hands, which continues to flow the cold water. By the time they take a drink, the water is nice and cold. This fools the brain into thinking it tastes better.
2 Answers. All water coming into your house comes from the same single source, so unless you have two separate storage tanks for your kitchen taps and bathroom taps (highly unlikely) then the water will be identical.
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The exponential constant is an important mathematical constant and is given the symbol e. Its value is approximately 2.718. It has been found that this value occurs so frequently when mathematics is used to model physical and economic phenomena that it is convenient to write simply e.