Waterdrop K19-S Countertop Reverse Osmosis System, 4 Stage Reverse Osmosis Water Filter Countertop, 3:1 Pure to Drain, Reduce PFAS, No Installation Required, BPA Free

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1. Dana K Casale Verified Buyer – 18 May 2024

   Had this over a year. I do like it for its convenience and we drink a lot of water and the filter light still has not come on. What I do not like and why I did not give 5 stars is that the tank is truly a job to clean. I have calcium in the water and iron. I have tiny hands and can barely get my scrubbing pad to clean the bottom and in the tank by hand. Tank needs to be a bit bigger for ease when cleaning and this review would have been 5 stars.
   

2. Bellwether1 Verified Buyer – 13 August 2024

   I originally bought an under the counter from Waterdrop. After using a water trester, I was extremely shocked to see the number of TDS was not much less then the tap water! I emailed them and got some information and suggestions. Andrew was so helpful; he suggested the reverse osmosis system, which would filter out the chemicals and the TDS. He also gave me two suggestions; another under the counter and on on the counter (self sustained system). I chose the ladder because I’m short. The first counter system experienced some pumping issues due to the long shipping process. I emailed them again and Kimberly was more than helpful, I did a quick exchange and she offered me an additional filter for my inconvenience. This company demonstrates what customer service used to be like here! They truly are making customer service great again.
   

3. Joseph K Verified Buyer – 15 August 2024

   With 3:1 clean water to waste water, this rates very high in efficiency. A bonus is UV (ultraviolet) treatment. Total dissolved solids are displayed while dispensing. The water tastes great.
   Dispensing is quick. For large volumes in a short period of time it will be necessary to refill the tank.
   There is no obvious way to attach a remineralization filter. Probably the easiest way to remineralize is to use a stick such as the one offered by Santevia.
   

4. Eric Verified Buyer – 2 November 2024

   I bought this product back in April and within 2 months my countertop RO unit was dripping water from the dispenser nozzle during use. I reached out to customer service to ask if they could provide any replacement parts (because obviously some type of seal is bad), but their advice was to clean the nozzle with a soft-bristle brush (I tried it and this didn’t fix the issue). I decided to live with the issue (if I escalated further, I’d have to ship in my product and go without it for who knows how long) but eventually found the time to dig deeper. If you’re nifty with repairing consumer electronics/appliances, you can pop off the front white plastic faceplate (held together with a friction fit) using a cheap electronics opening kit. Disconnect 2 tubes and 1 wire, plus pop off some more friction fit plastic (on the black glossy cover for the dispenser), and you’ve gained access the nozzle unit itself. Looking at the actual dispenser nozzle assembly, the design flaw is readily apparent. There is a set of 3 holes on the top of the assembly, plus a bunch of holes in the circumference of the lower nozzle (the part you see during normal use). There are 2 O-rings in the nozzle area, but the glaringly obvious flaw is that neither of these cover the holes that are providing the water leakage path during use. I guess this design is supposed to provide an air vent (for smooth water dispensing), but covering up the top holes with PTFE tape got rid of my leaking issue without making my water dispensing any choppier. If this were a cheaper product I’d be willing to overlook this issue and give it more stars, but for $250 it should have a more reliable and user serviceable design. I initially thought I’d be able to keep this for 10 years, but now I’m not sure how long I have until running into the next issue.

   

5. Anonymous Verified Buyer – 14 January 2025

   Had this a year now and no problems
   

6. Rob A. Verified Buyer – 13 March 2025

   I’ve only used the water filter for 24 hours, but so far it’s been great! The setup was incredibly easy. Just taking plastic wrap and tape off all the parts and filling the machine up with water. It runs a first use cleansing cycle to clean the filter of manufacturing debris initially and then you’re good to go. I ran a few extra liters of water through before drinking any just to be safe. The water tastes noticeably more clean than the regular tap water (which I’ve been drinking my entire life). The machine seems to hold a decent amount of water and as a single person probably will only need to be refilled every 1-3 days depending on how much I drink. I also like that it tells you what the TDS levels of the water are for every glass you dispense so you can see how well the filter is working and when it may be time to replace. For now it has reduced the TDS of my water from ~170 down to ~14. A major improvement!
   

7. Lisa parker Verified Buyer – 17 March 2025

   I purchased the water drop about a month ago. It was leaking. I talked to Carina she sent me a new one right away with a one year warranty. Great company to deal with. Thanks again Carina.
   

8. ViTiger Verified Buyer – 4 May 2025

   I bought this to replace Zero Water pitcher water filter, which were very expensive especially for water quality in California as I get to replace the filter so quickly. So far so good, I followed instructions and got the system running at 30 TDS level though (I guess because of California water was heavily treated). Let’s see if it will work as promise-1 filter per year. Updated: after adding more water the TDS level kept rising to 45, 60 now 95 this is so unstable and I found a note stating that maybe because of water source and/or the residue of water mixing the reservoir but if it keep rising I would doubt the effective of this water filter system

   

9. Trevor Verified Buyer – 5 May 2025

   I don’t write many product reviews, but I feel like this one warrants it. This is an amazing device feels high-quality and the water that comes out great I add some electrolytes to my water, but it’s nice to know that I’m drinking clean water and bring it with us on roadtrips set up and bring into somewhere like a hotel room

   

10. Kindle Customer Verified Buyer – 7 May 2025

    May 2024 I purchased the Waterdrop countertop RO waterfilter. Love the product and rely on it for my drinking water. The water where I live is absolutely not drinkable. This machine is easy to use and with it my water tastes like bottled water. It is absolutely worth the price. After a year, I started having problems with one of the water ports on the back of the filter. I emailed the service department at Waterdrop and I was contacted the very next morning by Robbie Li. Robbie put me in contact with the technicians and they did their best to help me remedy the situation but nothing worked. Within 2 days I received a new replacement machine with filter and was sent a return label for the broken machine. I really appreciated Robbie’s prompt attention to my issue. I am very happy with the product and 2 of my family members have purchased it as well and have had no issues at all.
    

11. GM reviews Verified Buyer – 8 May 2025

    The machine has a good size, super easy to set up and the quality is excellent. The filter is last about a year. We have been using this machine for about 4 months. There is no problem at all. It is good for apartment that not allowed any under-counter water filter. There is four modes to dispense water 4oz, 8oz, 16oz and 32oz. The touch button is nice and sensitive. The water tase great. You can see from the video that it decreases the bmp from 100bmp(tap water) to 3bmp(after filtered). Plus the smell of the chlorine that comes with tap water is gone. Only some downside are the water tank is kind small(L1 means refill water) and it doesn’t able to dispense 24oz (mostly water bottles we have on that size so you need to do 16oz and 8oz) lastly is about the price is slightly expensive. However, it will be worth it for the long run.

    

12. Sai Verified Buyer – 8 May 2025

    I’ve been using it for 2 years now. Recently, I noticed an issue—if I don’t dispense the filtered water within 3 hours, it develops a pungent taste and smell. The filter life indicator hasn’t turned on yet, so it suggests there’s still life left in the filter. Before this, it was working fine and the water tasted great.
    

13. Jeffrey Lester McEachern Verified Buyer – 14 May 2025

    Good system, good water, good design, but vague directions.

    For tech support call the US number if you live in Canada

    Your instruction manual should be more informative and in a larger font.

    After flushing your system for the first time and you get a reading under 20 you are good to go. The 20 on the manual makes you think that you have to reach that number before you can use the water.
    

14. Gosha Verified Buyer – 8 June 2025

    The water is amazingly light, feels fluffy almost, taste-wise personaly, i really loved it, but it’s nothing alike to bottled water, brita, tap, etc. It pours pretty fast, we use about 4 full tanks a day, and it doesn’t become much of a hassle. Changing the water I’d say was the annoying part for me, the tank is super tall and doesn’t fit into my kitchen sink, so i have to take it to my bath sink, also since it removes by pulling it upwards, and i have shelves right over the system, i have to pull the whole system out and take the tank, it’s my personal problem with the lack of adequate space, but worth mentioning. Also i use a massive jug, 2.5gal, to store the water it filters, and i really wish if it was possible to set a custom volume of pour, there’s 4oz, 8oz, 16oz and 32oz, would be far more comfortable to have a “full tank” pour option perhaps.