Honest Waterdrop Water Filter Review 2025 (G3P600)

So, you’re thinking about jumping into the clean water movement and you’re curious about the Waterdrop water filter? I was right where you were, doing all the research I could on the best water filters for my family.

If you’re like me, you don’t trust tap water straight out of the municipal water supply (And honestly, how could we?) There are all kinds of harmful contaminants floating around—heavy metals, volatile organic compounds, and who knows what else. So, after way too much time researching water purification products, I finally got my hands on a Waterdrop Filter, and here’s what I really think about it.

(If you’re anything like my husband and you want to get straight to what could be better or what to know before buying/installing, scroll down to the table of contents and skip straight to that part 😉 Otherwise, stick around for my full review)

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Is Waterdrop a Good Water Filter Brand?

If you’re looking for a solid water filter brand that actually does what it claims, Waterdrop is a great option, in my opinion.

It’s one of the more well-known names in water purification products, and offers everything from reverse osmosis systems to countertop water filters, refrigerator filters, and sink filters.

I’ll be completely honest here- I really really wanted (and still do) the whole house reverse osmosis system, but it’s just not in the budget right now. However, I’ve been so very happy with the waterdrop!

And regardless of whether you’re filtering out heavy metals, volatile organic compounds, fluoride, or chlorine, Waterdrop has a system that gets the job done.

A few things that make the Waterdrop a good brand…

High-Quality Filtration – Their multi-stage filtration systems use activated carbon, reverse osmosis membranes, and carbon block filters to remove harmful contaminants while keeping important minerals intact. Many models are certified by the Water Quality Association, so you know they’re legit.

Good Value for the Price – Some reverse osmosis filters come with a high price, but Waterdrop is a lower-cost alternative without sacrificing quality. Their tankless RO system is a clear winner for people who want pure water without taking up a ton of space (like myself).

Easy(ish) Installation & Maintenance – The waterdrop water filter comes with straightforward installation instructions, and replacement filters are easy to swap out. It also has a filter life indicator, so you’re not guessing when it’s time for a new filter. (Read more on our installation experience below).

Does the Waterdrop Water Filter Actually Work?

Yes! The Waterdrop Water Filter gets rid of that weird water taste and filters out all the junk that doesn’t belong in my cup.

I went with the Waterdrop G3 series, which is a tankless RO system. That basically means I don’t have to deal with a bulky water tank under my sink, and I get pure water straight from the tap.

The reverse osmosis membrane in this thing is no joke—it removes heavy metals, fluoride, and all those mystery contaminants that you don’t wanna be drinking (or your family to be drinking).

The flow rate is way better than I expected. I don’t have to stand there forever waiting to fill a glass or a pitcher.

We use it for drinking water, cooking, and even water for my sourdough starter (which, by they way, my sourdough starter loves this water so much)!

What I Love About Waterdrop Water Filter

The Water Taste is Actually Good! – I no longer have to deal with the chlorine or weird aftertaste. Just clean, fresh water that doesn’t make me wanna gag. My boys even love this water (and they aren’t easily impressed when it comes to water, BUT they are LOVING this thing)!

Fast Flow Rate – Some traditional water filters take forever, but this one moves fast, especially for an RO filter. It takes no time to fill a cup, pot, or pitcher.

No More Plastic Water Bottles – I used to go through gallons of water in bottled water, especially since my boys would open a bottle and forget where they put it or whose is whose, leaving us with a ton of opened and unclaimed water bottles all over the house. But now I don’t have to. That alone saves me money and cuts down my carbon footprint.

Replacement Filters Last a Long Time – I don’t have to swap out a filter cartridge every month, which is a win. The filter life indicator lets me know when it’s time for a new filter, so I’m not guessing.

Easy-ish Installation – If you can follow installation instructions, you can set this up. I don’t install things (haha). I leave all that up to my husband. He will flat-out tell you that something will always go wrong before it goes right when he tries to repair or install anything. But we did it without having to call reinforcements (although we had a couple hiccups)!

What You Should Know Before Installing the Waterdrop (According to My Husband)

Installing this system isn’t rocket science, but you’ll want some basic plumbing knowledge—or at least know someone who does. This was definitely not something I could have done on my own. I would have sent it back before I tried to install this myself.

A Few Things to Keep in Mind:

Plumbing & Tools – You’ll need a basic understanding of plumbing to avoid leaks during installation. A decent set of tools helps too!

Drilling Required – You’ll need a ¼-inch drill bit to install the runoff tubing into your sink drain.

Countertop Hole – If you don’t have an existing hole from a soap dispenser or sprayer, you’ll have to drill one. We didn’t have one already so we drilled with a 1 ⅜-inch diamond hole saw (although the manual suggests a one inch).

Power Source – This system needs an outlet under the sink. If your dishwasher is hardwired (like ours was), you may need someone to install an outlet for you. My husband installed one for us pretty easily.

Under-Sink Placement – This unit is not something you want sitting on your countertop. There’s a lot of tubing, plus an adapter and hose that ties into your cold water line (hot water is a no-go).

Tools You’ll Need:

¼-inch drill bit
1 ⅜-inch diamond hole saw (or 1 inch if you follow the manual exactly- we didn’t)
Wrenches (for securing the adapter to the cold water line)

The kit includes Teflon tape and most of what you need, but having the right tools on hand will make the job smoother.

What Could Be Better?

Pricing – Look, I’m not gonna lie, reverse osmosis filters aren’t cheap (especially if you are really frugal like me). But compared to other water systems, I think this is a great option for the price. I was looking into the Berkey, but found that the Waterdrop was actually a tad cheaper (barely, but cheaper nonetheless), and reverse osmosis products can’t be beat when it comes to quality.

Some Models Require Extra Space – If you go with a tank RO system, be ready to sacrifice some cabinet space. That’s why I went with the tankless design (and also why I decided against a Berkey, given I am already short on counter space as is).

Did you notice that I never mentioned anything about quality in this “what could be better” section? That’s because I have zero complaints when it comes to performance or taste.

Sure, we had a couple set up challenges and it was definitely a financial investment (maybe not for some but for us), but once we got it installed, we have been so pleased with our purchase!

How Long Does a Waterdrop Filter Last?

The lifespan of a Waterdrop filter depends on the type of filter you’re using and how much gallons of water you run through it. Here’s a breakdown of how long different Waterdrop products typically last:

PP filter (pre-sediment filter): ~6 months
Carbon block filter: ~12 months
Reverse osmosis membrane: ~2 years
Post-carbon filter: ~12 months

One of the best features of the Waterdrop G Series (as previously mentioned) is its built-in filter life indicator, so you don’t have to guess when it’s time for a replacement.

How to Know When to Change Your Filter

Slower flow rate – If water is taking forever to come out, your filter head might be clogged.
Change in water taste – If your fresh water starts tasting funky, it’s time for a replacement filter.
Filter life indicator is on – Many Waterdrop products have built-in reminders when it’s time for a filter change.

Are the Waterdrop Filters Hard to Replace?

Nope! Waterdrop filters are known for their easy installation, and swapping out a new filter usually takes just a couple of minutes.

Is It Healthy to Drink Reverse Osmosis Water?

Yes, reverse osmosis (RO) water is safe and healthy to drink, but there’s a little more to it than just a simple yes or no.

Reverse osmosis water filters are great at removing harmful contaminants like heavy metals, volatile organic compounds, chlorine, fluoride, and bacteria, making it one of the most effective water purification products out there. Trust me, I did a ton of research so you don’t have to!

The Pros of Drinking Reverse Osmosis Water

Removes Contaminants – If you’re getting your water from a municipal water supply or an untrustworthy water source, an RO filter helps remove all the bad stuff, leaving you with pure water.

Better Taste – Many people switch to reverse osmosis water because it eliminates that weird tap water taste caused by chlorine and other chemicals.

Reduces Exposure to Harmful Substances –The waterdrop water filter filters out lead, arsenic, pesticides, and other nasty contaminants. The RO system is one of the best ways to ensure you’re drinking clean, fresh water.

What About the Minerals?

The argument that reverse osmosis systems remove minerals sounds concerning at first, but in reality, tap and even bottled water aren’t major sources of essential minerals in the first place. Most of our calcium, magnesium, and other necessary nutrients come from food—things like leafy greens, nuts, dairy, and meats.

Even if you’re drinking non-RO filtered water, the mineral content is usually minimal, especially if you’re on municipal water, which is often treated and stripped of naturally occurring minerals anyway. Bottled water isn’t much better—it’s often just filtered tap water, and even “mineral water” typically contains only trace amounts.

Final Thoughts

If you’re worried about water quality, live in an area with high contaminants, or just want pure, great-tasting water, a reverse osmosis system is one of the best investments you can make.

Would I drink it every day? Absolutely. Would I recommend adding minerals back in? It’s optional, but not necessary. Either way, RO water is one of the cleanest, safest, and healthiest choices.

Waterdrop delivers solid filtration without the hassle—their systems are well-made, easy to use, and a good value compared to other brands. If you’re looking to upgrade your water and ditch plastic bottles, this is a smart choice.

Would I recommend it? Yep. Would I buy from them again? Without a doubt.

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Waterdrop G3P600 Reverse Osmosis System

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So, what do y’all think—worth the investment, or do you have another water purifier you swear by? Let me know in the comments! 💧

Love, Kacie from Her Country Roots

About The Author

Kacie Barlow

Founder at Her Country Roots | Website | + posts

Kacie is a wife, homeschool mom of 4 boys, holistic esthetician, and a sixth-generation homesteader with a passion for natural and sustainable living, creating a home that educates the mind and nurtures the soul, and reclaiming our independence like our ancestors before us.