Does it matter if you use tap water rather than filtered water with a regular coffee maker?

Question

I've noticed people using tap water because they think the coffee maker sufficiently boils the water, thus making it safe to use. Others use only bottled water.

Answer 1

actually i suggest that u use bottled water.some times if the coffee maker is faulty and it is contaminated water it can be a health hazard

Answer 2

Your standard run-of-the-mill coffee maker uses an inline heater and a check valve. The water flows down through the check valve into the inline heater, where it is heated to the flash point. The steam then blows the boiling water up out of the pipe into the coffee basket, emptying the pipe. When the pipe is empty, the cold water in the tank flows by gravity through the check valve and refills the inline heater. If you put hot water in the tank, the inline heater is much too powerful. It is designed to take a certain amount of time to heat up a load of cold water, but when it encounters hot water it will heat it up in no time and pass the water through to the coffee basket faster than it can filter it.... overflowing basket, water everywhere, and weak coffee. There will also be a lot of steam and rattling - after discharge the inline heater is still hot, until the cold water cools it off. Then it heats up the cold water until it is hot enough to flash. Imagine, though, what happens when hot water drops onto a hot heater - it flashes immediately and explosively, blowing water and steam out with some violence. You could certainly design a coffee maker to run on hot water - all you have to do is put a much, much weaker heating element in it. In fact, commercial coffee makers do use a tank of preheated water - when you push the button it just drops the hot water at a measured rate through the basket.

Answer 3

If the tap water is good , then the coffee would be good. But if your local water would not pass all the water tests and is not safe to drink then I would not use it in a coffee maker. It does not get it hot enough to make it safe to drink.

Answer 4

It's more a matter of leaving mineral deposits in the coffie maker. There is also a difference in taste. As far as being safe water to drink it should get hot enough to kill any bacteria that might be in tap water.

Answer 5

If you use filtered water your coffee will have a prettier, clearer color and taste better. Also if you have hard well water (particularly iron) or city water (lime) the minerals will deposit in the works of the coffee maker making it run slower and slower and make your coffee taste worse and worse.
The very hard water also makes your brewed tea, hot or iced, very black.

Answer 6

it depends where you are. a lot of european countries have very poor water, and advise you not to drink it, and to keep onto bottled stuff. in the UK and america though, the waters fine from the tap. you may get a little residue from using regualr tap water, but its nothing to worry about. tap waters safe to drink anyway

Answer 7

Bottled is better

Answer 8

No, it doesn't matter. It may taste wise though. I doubt it though.

Answer 9

it does not matter ether way its all the same .................. i think fillterd water