Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: does it filter ALL water coming out of the faucet ?  Or can you press it (?) to only use the amount you wish to?  (e.g. for only 1 cup)
Document: This is the third one I have bought in 10 years. They last at least 5 years with out filter replacement. Yes they really work. When I have people taste the water coming out of it they are delighted. I have a well. Culligan said I have the worst water in our sub division.Sulfur, rust, a bad smel. I use to buy water up town and would use that for ice & drinking water. But now this taste better than any bought water.
I love his product- Easy to install and easy and ready to use. Quick adapter makes the connection easy to do, a turn of the faucet and handle and your ready to use. Able to move around on counter-top makes it a plus. I am able to fill those large bottles to make Ice Tea in.
So I did a search hear at amazon.com and found it. I ordered it and its in transit now. Can't wait to get it and get it hooked up. BTW easy to hook up, easy to use. I highly recommend it. My well water with this filter tastes like spring water.UpdateReceived it, It is very easy to hook up, and it works great.
Water would drip back out of both ends depending on the position of the valve on the faucet. When the valve was open and water was run, it would drip out of the metal tube on the top of the filter. Not good when I was trying to run hot water into the sink and some of it was clearly being directed to the filter and of course slowly ruining it. And when the valve was closed, the water would drip back out of the faucet for hours.
We absolutly love this filter. We purchased one from sears over 6 years ago and finally had to replace it this year. It is the easiest and best filter I have ever used. Where we live the water is very hard and since we are on a well (no city water for us) it can have some sediment in it. This is the best filter ever. We have tried other filters and styles. From pitcher to faucet mount and none are as good as this 5 stage filter.
The filter is good and appears to be high quality. I gave it four stars because my facet required the use of the adapter I received with the filter. The adapter was cheap and did not fit correctly. I did get another one from the local hardware store. I cannot believe that the company would risk its reputation to save a few pennies on an inferior adapter.
I am very happy with this product. I previously had a filter that attached to the faucet, it was slow and in the way all of the time. I did not encounter any of the leaking or installation problems that others mentioned. I took it out of the box, hooked it up and presto!
It is large enough that anybody can use it. Even with our hard water it has never frozen or broke. The spigot at the top is tall enough that you can place almost any size continer under it to fill. We keep it at the edge of the sink so you can fill as tall or deep a container as you need. Try it and you will love the ease and convience of setting it on the counter and forgetting about it for the next 5 years. No maintence is necessary.
I think the other brands that require replacement after so many gallons, or 1-2 months are a SHAM. You will not find a great product like this because your local business only keep items on the shelf that force you to return for the replacement filters often.Examples:ZeroWater (12-14 Gallons then it is bad!!! - Most expensive gravity filter, and very slow!!!
I've bought these filters for the past 15 years, including for my icemaker, and wouldn't do without them for my drinking and cooking water. My husband says he can't tell the difference in the taste (he's a smoker), but I definitely can! The unit is very easy to hook up to the kitchen faucet.
Answer: no