Waterdrop Countertop Water Filter, Replacement for Aquasana® Filter Replacement, AQ-4035®, AQ 4025, Will Fit AQ4000, AQ4050, AQ4500 Drinking Water Systems

Good Quality, Installed Properly and Easily, Provides Good Tasting Water.

I’ve been using these filters for years they’re great!

They fit perfectly fine. I have used several of them for the past 3 years, without any leaks or noticeable issues. Recently as EPA updated guidelines for PFAS in water, I looked for certification of these. I could find none, and customer service confirmed that it has no relevant certification for WD-4035. Lots of other waterdrop products are certified, but this one is not. Not even the basic NSF 43 (aestehtic), let alone 53 (health) or 401 (emerging contaminants). Hence, I discontinued. Original aquasana filters are certified for all 3 standards. And Aquasan filters do feel clearer/better in taste, however this is highly subjective as I am trying to compare my perception of a filter changed just now with the changed filter 6 month ago.

The main purpose for the use of Aquasana Filter is to remove the odor, chlorine and all the particles floating around in the water from our city water supply, which is terrible by the way and does a good job at all three things. The other reason is the cost of the filters, half of the cost of the Aquasana filters and these Waterdrop filters seem to work just fine for our needs. A thumbs up from me !!

Good price and very timely delivery

Fits my Aquasana tabletop perfectly. Works just fine.

I have had this unit for about two years. It is the second time I bought this same unit because I liked it. It worked well and the water tested pure, and it was affordable. Now it seems this model is discontinued. I had bought more filters despite the increase in price, and just recently my current unit unit has started leaking, so it's trash now. The new units are, of course more expensive, so I'm tempted to just go back to using a pitcher, which, at least for now, is affordable. Water filter companies are marking up their products ridiculously, and in a time when people are having a hard time just affording eggs and milk. Rampant greed is ruining our country. You have to be rich to have healthy food and healthy water. Not singling out this company. They are all overcharging for products that don't last long enough to warrant investing in such purchases, even if you have the cash. Disappointing. Aggravating.

Finally found it necessary to shop for less expensive alternative to OEM. These filters fit just fine in our AQ-4000. Major difference is the flow rate which is double the OEM. Just hope the filtration is same.