- Capacity/Lifespan: 5 years
- Estimated gallons: 50,000
- Depending on incoming water quality
Second unit
"This unit replaced one bought 5 years ago. Works so good, replaced with same unit. Only took 10 minutes to remove old unit and insta New one."










America’s favorite under sink water filter systems for over 20 years. Removing impurities such as Chlroines, PFAS, heavy metals, etc.
CuZn’s UC-200 Series under sink water filters are NSF/ANSI 42&372 certified. Featuring industry leading filtration performance, legendary lifetime support and are without question the best value on the market.
CuZn’s UC series is featured on Amazon and remains the only under sink water filter to have continuously maintained a 5 star rating for 5000+ reviews because you aren’t just buying a product off the shelf, you are purchasing years worth of guaranteed top quality drinking water service for your home from APEC CuZn.
Designed to connect directly to your existing kitchen sink cold water line.

The UC-200 Series Water Filters have been America's favorite under sink water filter systems for over 2 decades.
CuZn's UC-200 model is featured on Amazon and remains the only under sink water filter to have continuously maintained a 5 star rating for 5000+ reviews because you aren't just buying a product off the shelf, you are purchasing years worth of guaranteed top quality drinking water service for your home from CuZn.
The UC-200 Series water filters will reduce a wide variety of organic and inorganic contaminants including but not limited to: chlorine, chloramine, water soluble cation heavy metals (lead, mercury, chromium VI, cadmium, etc.), herbicides, pesticides, sediment, algae, molds, bad taste, odors and other undesirable contaminants that may effect the quality of your water supply. Unlike carbon only filters, bacteria can’t grow inside the bacteriostatic CuZn UC-200 Series Water Filtration Systems.
The UC-200 requires virtually no maintenance and installs in minutes, hooking up to the cold water supply of your kitchen sink. When you turn on the cold water side of your kitchen sink, pure CuZn filtered water will be dispensed on demand for all your cooking and drinking needs. New video installation instructions can be viewed by scrolling below further or searching "UC-200 Water Filter Install" on Youtube.
The UC-200 Series purify the water selectively, allowing health beneficial water mineral content to remain in the filtered water. A UC-200 Series type water filter system DOES NOT reduce TDS or PPM type meter readings.
To test the UC-200 Series performance, utilize DPD#1 Chlorine Test Strips. Replace the UC-200 Series filter system with a fresh one when chlorine breakthrough is detected in the filtered water. CuZn recommends using sensitive chlorine test strips that list 0.25ppm as the minimum level on the strip for the earliest and most accurate detection of chlorine breakthrough.
Total hardness (total hardness = concentration of calcium & magnesium in the water) will pass through the UC-200 Series type water filter systems and remain in the filtered water dispensed from the systems. Calcium & magnesium are health beneficials minerals to ingest and give the water a nice flavor profile when present at low to moderate levels, the UC-200 Series purification method that allows the Hardness Minerals to remain in the filtered water is one of the reasons why it is a popular choice.
The average level of Hardness Minerals (calcium & magnesium) in city water systems in the USA is only 5 grains per gallon, which is a low to moderate level of Hardness Minerals that is ideal for health and drinking water flavor profile, making a UC-200 series type water filter an ideal choice for folks the vast majority of city water supplies in average Hardness Mineral levels range.
However, there are still some city water supplies that that contain excessively high level of total hardness (calcium and magnesium). The level of total hardness (calcium & magnesium) is used to determine if your water is "soft water" or "hard water", water that contains excessive or extreme concentrations of total hardness is referred to as "hard water".
While it is perfectly healthy to drink water that contains excessively high concentrations of total hardness (calcium and magnesium) that is considered "hard" water, way too high a concentration of Hardness Minerals can cause some minor aesthetic issues. For example, if your water contains excessively high hardness minerals and is considered "hard", you'll experience "hard" water mineral residue build up symptoms (white/tan/light-colored mineral residue on glasses, tea kettles, sink spouts, etc) and perhaps an overly "minerally" flavor profile.
We are proud to offer 1 day order processing (excluding weekends and holidays). Orders that are placed prior to 12:00 pm PST with express shipping services will be guaranteed to ship out the same day – subject to order verification and credit approval. Our shipping charges are based on the method of service and the location.
Products can be returned within 30 days from the date of invoice. Please carefully review APEC's Return Policy details and conditions.
Overall rating: 4.7 / 5 from 50 reviews.
The CuZn UC-200 Series Under Counter Water Filters are highly regarded for their ability to deliver clean, refreshing, and great-tasting water. Customers appreciate the high quality and ease of use of the filters, making them a top choice for under sink water filtration.
Review topics: [water, quality, glass, tasting, filters, chlorine].
"This unit replaced one bought 5 years ago. Works so good, replaced with same unit. Only took 10 minutes to remove old unit and insta New one."
"I love this filter and am glad it has been revised on the inlet, these are truly the best filters for long term use!!"
"This was a replacement for a previously purchased CuZn filter that had been contaminated due to a water main break. Both filters provide easy installation, crystal-clear water and high GPM waterflow, making it the best replaceable filter product in the industry."
"The water was grey for over a week after installation. Too much water was wasted trying to get the excess carbon dust out of the filter."
"Improves taste, and test strip shows no chlorine."
"It is a reasonable size, well built, easy to install, lasts for about 5 years, produces good tasting water and reasonably priced too. I'm very happy with it. Thank you!"
"Installed for about a month and so far, so good. Removed the chlorine taste. Bought this filter to remove a range of unwanted contaminants found in municipal water so I trust those are removed also."
"Love this product. Wr have well water and this filter does an excellent job of removing unwanted particles in our water."
"Enjoying my water filter. Water has a great taste."
"Easy to install, and just forget about!"