CuZn UC-200 Under Sink Water Filter, NSF/ANSI 42 & 372, 5-Year Filter Life | Reduces PFAs, PFOS, Lead, Chlorine, Improves Tap Water Taste, Inline Faucet Connection for Simple Installation

UPDATE (6/10/2025): Just installed my second CuZn 200 water filter after using the old one for 5+ years without a single problem. The old one was still sending out water without slowing down (and almost as fast as the unfiltered faucet), so I knew it was still filtering the water well, and the water tasted just as good as when we installed it back then. The new CuZn 200 filter is a bit more compact and at least an inch shorter than the old one, so I had to put some packing under it in order for my supply line to my dedicated drinking water faucet to reach comfortably. Other than that, installation was a snap. I flushed the new filter for around 8 minutes, and the water was clear and spring-fresh-tasting! I registered the filter with CuZn.com and got an extended 5-year warranty. If you can find a better filter out there, I’d be very surprised. This filter is worth every penny, and I’m confident I will have healthy, good-tasting drinking water for the next 5+ years. Oh yeah, remember to write the serial number of the filter on the instruction sheet before you install the filter. You will need it when you register your filter. The serial number is on a little sticker on the base of the filter. It would be hard to get at once the filter is installed! *** Bought this back in October, but waited for my previous filter to expire before installing this one. It was very easy, with good instructions and simple set up. Water flow is really good and the taste is great. This is a very substantial filter and very well-made. Worth every penny. I think it’s the best thing out there! I installed mine on a dedicated drinking water faucet next to my kitchen faucet. We use it only to drink and cook with. I wil definitely stick with this filter as long as CuZn continues to make them.

I feel extremely excited writing this review. I ordered this water filter system after spending many hours browsing for a water filter that was reasonably priced and offered the best filtration system for a clean supply of water. This filter was the only one in our search that offered exceptional value for our money. Not only did it not have any requirement for periodic change of filters which most other systems require, but it also had the most thorough filtration process making the water extremely clean and pure. And another amazing feature of this darling was that it was so easy to install and the system was not a bulky item. This beautiful system also offered a life of 5 years. No other filtration system we saw offered this for such an amazing price. We have been using this filter for over a month now, and we are the happiest people. We have tested the water using testing strips and the results are always positive for pureness. We use the water for all kitchen purposes with peace of mind and the water tastes crisp. This system is saving us 50 dollars a week which we used to spend buying water cans from the store. Not to forget to mention the amount of nano plastics we were injestic from these plastics cans which this system has now put an end to. This review will not be complete without mentioning the extraordinary customer service that the owners of this system provide. The team is exceptional and they are with us till the installation is complete and running smoothly. Every step of the installation process they offered guidance and shipped the required installation accessories free of charge, including a small filter system to remove TDS. They were readily available for troubleshooting and followup. And they promise replacement if we encounter any problems during the 5 year period. No company offers such a sweet deal and keeps cutomer first. Thank you Cuzn Family. We are very happy that we became part of the Cuzn family. Extremely happy customer for life.

I initially ordered a reverse osmosis countertop system (Simpure - don’t recommend them) but it arrived with the broken filter and had the fish smell. At around $400 I was extremely disappointed and sent it back. Then I came across this solution that does not require an electric outlet and is very simple to install for someone who’s not a plumber. As a renter I selected the two year unit for $100 just in case we extend our lease. The installation took 10 minutes and was extremely simple, as described. This was actually the part I was the most worried about, but turned out to be a no brainer. It’s logical and easy to follow. I am including a video that shows you how this unit helped me get from 160 or 180 TDS to 0 TDS and 0 Chlorine. As you can see in the video, I’ve tested the water from different cups I filled about every 30 seconds after installation. I skipped the very first batch because it was black due to the particles released from the filter, as it is mentioned in the manual - no worries there. Anyway, as you can see the initial TDS was in the high 300s as the filter was clearing & it eventually got down to around 114 or 120 area after running the water for 3 minutes full on. That is great and let’s not forget, this already filters the lead and chlorine etc. For the record. our default tap water before the installed showed 160 to 180 - so definitely an improvement, but again, still unfiltered. At this stage, I also tested the chlorine levels with the included tester and it did achieve zero! The water smelled pure after the installation, no odor. The Chlorine strip showed the very first - lowest indicator for no chlorine. So, end result is 120 TDS, 0 chlorine. Btw. it is mentioned in the manual that TDS and PPM meter reads are not valid with this unit, but since I had one, I tested it and it showed an improvement. The Chlorine strip (included in the box and again showed 0) which as per manual, SHOULD be used to test with this unit. Now, as in how to get from the 120 TDS to zero TDS, I simply used our 52 cup Zero Water filtration system with the proprietary two filters that cost about $27 for a pair and last about three months or more. (The 52 cup dispenser comes with 2 filters anlready and is about $50. Every few months it’s around $27 for 2 filters from then on). This ladies and gentlemen is a noob friendly and no-electricity requiring $150 system all-in, with the filter that lasts for two years under the sink and a system that last for two-three months with zero chlorine and zero TDS for about $27 at 3 months, or $12 a month. If you were to buy the one year unit at $70 this comes out even cheaper. You can’t beat this cost to performance ratio for this simple set up. Ideally, you could still add a UV filter (which can be purchased on Amazon for under $100 also) and put it in between this unit and the outlet hose, but since we don’t have an outlet under the sink, I couldn’t. New technologies have LED UV that never need a replacement bulb still at that price point. I am very happy with the investment and its ability to remove chlorine and other contaminants to 0 as proven by the tests. The countertop system took care of the rest for very cheap. I recommend this combination for zero TDS and zero chlorine, but don’t forget neither of the systems eliminate water that might have parasites and other contaminants. In other words, you need drinkable water IN to get drinkable high quality water OUT. If I would own my own house, this would be my in-between peace, not my main piece and I would still use a proper (UV) ultraviolet (Reverse Osmosis) RO system - but this one fits the bill for everything else. If you were to buy everything brand new, you would literally go from bad water to pure healthy water in 20-25 minutes including the flushing of the Zero Water filters. Super convenient for something you can literally use for years at a time. I hope this helped.

I don't have a single bad thing to say about this filter. It's super well made, super easy to install and the water tastes as good as my old triple stage reverse osmosis unit. After a pretty exhaustive search, I don't think you can do better in this price range. Construction- Really well built. Heavy and sturdy. They did a great job. It looks like the person or people that made this really cared about the kind of water you are going to drink as opposed to how to cost effectively deliver a decent water filter. Still, at $119.00 this is great and in person, it looks/feels a lot more well built than it does online. Installation- First off I love how this can just stand in the corner and not get in the way of anything. I've tried a few other filters and they took more work to get them out of the way. The hose it came with didn't look cheap and matched the hose I already have that attaches to the faucet. Also where you mount the existing hose to the sink is built into the filter. So many other under the sink filters have another hose that connects with a male to male adapter. This reduces clutter and makes it really easy to install. Size- It's pretty big and it's a lot more filter than you would think when looking at the pics. Make sure you know how much room you have under your sink. Still, I had a lot of room left before it would hit the top. There is a lot of filtration going on. Water Flow- It's almost unnoticeable after it's installed. My wife or nanny didn't even notice the difference. I was really worried about an under the sink filter because I knew any good filter would probably not filter water as well if it had high flow. I tried some, like the Woder 10K and the Hansing 13k. They weren't bad but neither flowed like this. My main concern with the faucet was too much reduced cold water flow would cause the hot water to be too hot but this is really close. Water Taste- Not only does this flow well the water tastes really good. The place we moved to couldn't house our Reverse Osmosis unit so I had a lot of trouble finding something comparable. Luckily we now have much better water so I didn't need as much filtration to get the same taste. It blew away the Hansing 13K and is noticeably better than the Woder 10k. It also blew doors on some sink top filters I tried as well like the CleanWater4Less and Apex Countertop Waterfilter. The water is clean and crisp. Before this the water from the other filters didn't taste that great and sometimes made my stomach a little off. Nothing bad but just wasn't settled like it use to be. Now the Woder 10k wasn't bad and I could have probably lived with it but the CuZn was so much better. After being unsatisfied with all these highly rated countertop and under sink filters I finally found the right one. It tastes like bottled water and I'm so happy I took the time to write up this review. I feel like I owe it to this company for standing so far out above the competition. Hopefully, it will help others in a similar situation as myself. I'm buying their refrigerator line filter next and my incredibly frustrating search for a good water filter is finally over. Thanks CuZn and you make a really great product. I don't think there is a better under the sink filter in this price range or even a good bit higher that can do what the CuZn does.

This is very easy to install and seems to be a good, long lasting, first line of defense for water filtering. I did not mount it; just cradled it on top of a big, folded towel. You will need to create space as it is quite large. It comes with everything you'd need "normally". Very easy installation, though I had one small leak due to my special setup, described later, which was easily remedied with additional tightening. Once completely installed one needs to run water continuously for ten minutes to allow all the sediment and loose/small particles to run out. The water will be quite "dirty" looking for the first few minutes. After this time the water is supposedly safe to drink, though you will find it cloudy for another few gallons or so. I ordered this without visiting the manufacturers website in detail first - for those that know me I realize I may not have been well that day 😉 I mention this because after I ordered I later went to their site and compared the models relevant to my situation - long lasting (many moons) with the ability to deal with and remove chloramines and fluoride. In doing so I realized I had ordered the wrong one 😣 I contacted them and requested the chloramine and fluoride removing model and they very graciously sent me the desired one with a return label for my mistake. Amazing!!! No charge. Highly recommended. I have pasted one reply from our conversation: "Hello Daxvieor, Hope you had a great weekend! We'd be happy to exchange that item for you. As of Feb 2017, all UC-200 Standard Wide Spectrum Models are now manufactured with SNRF Catalytic Carbon, so they'll preform great with water that is treated with Chlorine or Chloramine. However, we have not yet standardized on the Fluoride reduction stage being included, so we'll get the UC-200F-85 model shipped out to here shortly. I'll be sure to follow up with a tracking# for the exchange package when it departs our facility. Additionally, we'll include a return ship label for UC-200 Wide Spectrum model that you received previously. If it is not too much trouble, would you mind using that included return ship label to mail that unit back to us? Please let us know if you have any additional questions!" For anyone interested in water filtering I have a visitor and family approved setup teed off the cold water line going to the CuZn UC-200F-85 which then proceeds through the under sink New Wave Enviro 10-stage water filtration system conversion kit (with some adapters). I fill up a pur water pitcher (third filtering of the water) and refrigerate it. Water tastes great despite all the chloramines upstream. Having the three stages of filtering, with the long lasting and reasonably priced CuZn filter (if purchased through Amazon; manufacturer's site prices are higher) at the beginning ensures the other two filters last longer since they don't have to filter as much big stuff. Saves money, saves time and tastes great!

So I was looking for a under-sink water filter for a long time. I did pretty decent amount of research before deciding on this one. I looked at reverse osmosis (which wastes tons of water.) and other filters. But noticed for the amount of money you pay for most filters the replacement cost more than the unit itself and you have to replace the filters every 6 months. So here’s a few things: Pros: Super f***ing easy to i stall! And Imma woman Don’t have to worry about changing filters for 5 YEARS!! (Or unless chlorine test strip shows chlorine idk need to get this) Super friendly and fast customer service! Made in the USA Cons: You have to throw out the whole unit and get a new one. Not much of a con but wanted to mention. Takes a long time (about 7 days) to be drinkable. Let me explain about this: When you first in any filter they tell you to get it run for a bit or filter out a certain amount. With this filter I believe it stated to let the water run through for 10-15 mins. Which I did. But after doing this the water had a very heavy dense taste. I guess it has a lot of magnesium and iron to filter out before it’s easy to drink. I contacted CuZn customer service and they were very understanding and let me know about letting it run a little longer and after a week should be fine or they’ll send me other another unit. It took about a week or so to loose that dense/heavy taste. Now I am able to drink and cook with it with out worry! And give my one year old water!! I live in Austin Tx so the water has a weird smell and tastes kinda salty. I do taste a difference in the smell and taste! I am happy that I bought this and will def. buy again!

I purchased in Fall 2023, and replaced with same unit in 2026. Filter is well made with included braided connector, easy to install. After 2 1/2 years I decided to replace due to subtle chlorine taste, I tested the filter's efficiency with the included test kit and it was under the threshold concentration for warranty replacement of 0.25 ppm. I detected a slight taste that may have been from other contaminates than chlorine, and decided to replace the filter. New filter provides cleaner taste and suspect other contaminates may have been passing through filter. I figured I treated approximately 2,500 gallons, cold water used from kitchen sink.

This is filter no. 5 that installed over the last couple years in different projects, and I'm still impressed how good the water tastes after the filter, no chlorine taste at all! the installation is easy and simple, everthing whats needed is included. The water flow is sufficient,

Très satisfait de mon achat ! J'ai fait beaucoup de recherches avant de me décider, car il y a énormément de modèles différents sur le marché. J'ai hésité à cause du prix initial, qui est plus élevé que la moyenne, mais quand on calcule sa longévité exceptionnelle, c'est un investissement extrêmement rentable à long terme. Installation : Très facile et rapide à poser sous le lavabo de la cuisine. Qualité : La qualité de fabrication est au rendez-vous, c'est du solide. Goût : L'eau est parfaite, plus aucun goût ni odeur de chlore. Si vous cherchez la tranquillité d'esprit pour un bon bout de temps sans devoir changer les cartouches aux 6 mois, n'hésitez pas. Je recommande à 100 % !

Personally, I can't taste the difference between ditch water and rainwater, but my wife is Canadian and has always lamented the poor taste/quality of tap water here in Perth. This unit gets her tick of approval for water quality, and it gets my tick of approval for value for money, ease of install (did it myself with the excellent instructions provided), and customer service from the company. These guys really care about providing you with a quality water filtration system and a hassle-free experience. Gotta love that.

El filtro leí que es una de las mejores opciones qué hay. Pero llevo dos meses buscando un conector que me sirva para conectarlo al tubo de plástico de 1/4 (tipo filtro de agua) que va a mi llave de sobretarja exclusiva para agua purificada. Para conectarlo a una llave de cocina normal, no hay problema. Las mangueras de 3/8 funcionan Perfecto. Pero en MEXICO no he encontrado el conector necesario para un tubo

Based in Singapore, I was not sure if I would be able to successfully use this given the differences in plumbing standards between the United States and Singapore. Nevertheless, I took a leap of faith, and decided to give it a go. After trying to find the fittings unsuccessfully, I reached out to the CUZN customer service and it was a lifesaver. CUZN sent over the required fittings to me and provided the plumbing schematics, and with some additional hardware bought from the local store, I was able to get it working. Thanks!

I'd been using jug filtration systems for many years and after using the CuZn system now for a couple of weeks I am wondering why. After you factor in a jug, replacement filters over 5 years based on a 3 month replacement cycle, taxes etc. you are around $150 TCO. With this system you are around $180 TCO but no need to refill jugs and wait for it to filter, it's right out of the tap, for $30 difference that not a lot pay for the convenience since this lasts for 5 years. The install is so easy and comes with everything you need. You do need your own wrench though. Suggestion to the manufacturer to include a mini wrench like IKEA does? Anyhow, on to the most important thing, how does the water taste since that is where you really find the value in this system. For my family, we love it. We compared it to the jug filtered water and could really notice the things left behind in the jug filtered as opposed to the CuZn system, no after taste at all, super clean and crisp. Initially you will see cloudiness in the water as the filter primes but that passes very quickly and you get a great tasting glass of cool H20. I highly recommend this product to anyone interested in a water filtrations system.