What's Really in Your Water
Don't wait for the next water crisis. Your tap water already has a problem.
Tap water in most U.S. cities contains dozens of unregulated contaminants — even when it passes EPA standards.
- Kidney damage
- High blood pressure
- Impaired brain development in children
- Heart disease
- Increased cancer risk
- Thyroid disease
- Immune system damage
- Hormonal disruption
- Bladder cancer risk
- Respiratory irritation
- Dry skin and hair
- Harmful DBP formation
- Dangerous to infants
- Thyroid disruption
- Possible carcinogen
- Endocrine disruption
- Days
- Hrs
- Min
- Sec
Don't just take our word for it
Real results from real customers
See how we compare
Other filters can't cut it
Only reverse osmosis reduces up to 99.9% of total dissolved solids in your tap water — including what other filters miss entirely.
 Best Choice
NU Aqua RO
|  Pitcher Filter
|  Faucet Filter
|  Bottled Water
| |
|---|---|---|---|---|
| Reduces up to 99.9% of of total dissolved solids | ||||
| Removes lead & heavy metals | ||||
| Removes PFAS forever chemicals | ||||
| Removes chlorine & fluoride | Partial | Partial | ||
| Saves $1,000+/year vs. bottles | ||||
| Unlimited clean water on demand | 5 gal/day | Tap only | 3 gal/case | |
| No plastic waste | ||||
| Verified with PPM meter | ||||
| 3-year warranty |
Try it for 120 days. Love it or get every penny back.
We're so confident in NU Aqua that we give you 4 full months to fall in love with your water. If you're not completely satisfied for any reason, send it back for a full refund. No questions. No hassle.
Or 4 interest-free payments with Klarna
Simple setup
Installation is simple
No plumber. No special tools. Just follow the steps.
NU Aqua Platinum Series
5 Stage 100GPD RO System
(Polypropylene) Reduces larger particles such as:
- dirt
- sand
- dust
- rust
- debris
(Granular Activated Coconut Carbon) Reduces:
- Chlorine
- Pesticide
- s Herbicides
- VOCs
- Nitrates
- Hydrogen Sulfide
- Color
- Bad Taste
- Odor
(Activated Coconut Carbon) Reduces:
- Chlorine
- VOCs
- Organic Chemicals
- Mercury
- Manganeses
- Bad Taste
- Odor
(Thin Film Composite) Reduces:
- Sodium
- Chlorine
- copper
- chromium
- lead
- arsenic
- fluoride
- radium
- sulfate
- Calcium
- Magnesium
- Nitrates
- Phosphorus
(Activated Coconut Carbon) Reduces:
- Chlorine
- Bad Taste
- Odor
- Color
Got questions?
Common questions
Everything you need to know before you buy.
What contaminants does it remove?
The NU Aqua 5-Stage system reduces up to 99.9% of contaminants including lead, PFAS, chlorine, fluoride, arsenic, nitrates and pesticides. The included PPM meter lets you verify the difference immediately after installation.
Can I install this myself?
Yes — most homeowners complete the install in under an hour with no plumbing experience. The system includes color-coded tubing, quick-connect fittings, and a step-by-step video guide. Our lifetime support team is available Monday–Friday if you need help.
How is this different from a Brita or pitcher filter?
Pitcher filters remove 10–20% of contaminants and can't touch heavy metals like lead or PFAS forever chemicals. Reverse osmosis removes 99.9% — including everything a pitcher filter misses. It's a fundamentally different technology.
What if my water pressure is low?
If your home's water pressure is below 45 PSI, we recommend the version with a booster pump. Not sure of your pressure? Our support team can help you check before you order.
How often do filters need replacing?
Pre-filters (stages 1–3) every 6–9 months. The RO membrane and post-carbon filter every 12 months. Replacement filters are available on our site and are among the most affordable in the industry — keeping your annual cost far below bottled water.
What does the 120-day guarantee cover?
Everything. If you're not completely satisfied for any reason within 120 days, send it back for a full refund. No questions, no hassle, free return shipping. We also cover manufacturing defects for 3 full years.
Is it HSA or FSA eligible?
Yes — NU Aqua systems are HSA/FSA eligible through Truemed, which means you can use pre-tax dollars to purchase. This saves most customers an average of 30% compared to paying out of pocket.
Does it fit under my sink?
The NU Aqua 5-Stage system is designed to fit under any standard kitchen sink cabinet. The compact housing requires no drilling and the color-coded tubing routes cleanly regardless of your cabinet layout.
This 5-stage reverse osmosis filtration system delivers exceptional water quality. Customers praised the "affordable" system for providing fresh-tasting water and ice. Installation was described as "easy" with "well done" instructions. The system can be installed under cabinet or in basement with lines to multiple outlets including ice machines.
- It has made me love drinking water again.
- Instructions were well done and install was easy.
- I really can't say enough about it.
I'm a water snob, there I said it. I grew up with reverse osmosis filter in my house and always hated drinking other water anytime I would go out to eat or visiting someone else home. Everyone would tell me it was all in my head, but I could do a blind taste test and tell you if what I was drinking was good water or not. When I moved into my house I could not stand to drink the water out of the tap even after filtering it through brita filters etc. I ended up getting massive eight 5 gallon jugs of reverse osmosis filtered water that we would constantly have to refilland was not a fan of having everythingin plastic. Last June, I purchased the Nu Aqua under cabinet filter system and I really can't say enough about it. I ended up installing it in my basement below my kitchen so I could also run a filtered line to my ice machine and my sink. It has made me love drinking water again. If you are looking for an affordable system so you can have the best water right at your sink and ice that doesn't leave a horrible taste in your mouth you need to get this system. Instructionswere well done and install was easy. Thank you Nu Aqua for bringing water back.
Excellent product and easy to install
When I unboxed everything my first thought was “what have I done?” But after separating everything and taking the install one step at a time, it wasn’t all that hard; just a little time consuming. But well worth the time, effort, and price. Only problem I had was self-inflicted and simply required pushing a couple connectors all the way in as instructed.
I knew I needed to do something with my tap water, it is clean but I could still taste the chlorine. This system is amazing, fits in the back after the cupboard under the kitchen sink like a glove. It was easy to install and get up and running, though I haven't had to change the filters yet. Thanks for your product.
Well for me there’s not much to like when you find the thing you’ve been searching for it’s kinda hard find something wrong right away. So for now this review will stand, for now. So this unit already comes pretty much put together. For me the instructions were simple you just attach the proper colored hose to the connector as instructed in the instructions. Before I started connecting the hoses I checked double and triple checked my connectors. After my setup and flush the water taste like water we use to get from a stream in Alabama where I grew up! It’s light and clean no chemicals or additives for taste just clean delicious water! The unit is quiet and very well built in my opinion. As for the functionality it fit right under my kitchen sink perfectly. And it’s very easy to use! If you want pressure you have to get the pump version I think but the water pressure is fine for me since it’s for cooking and consuming more water into our diets. All in all we love it! It goes well want kitchen decor and it’s so easy to use just like your regular faucet!
Well for me there’s not much to like when you find the thing you’ve been searching for it’s kinda hard find something wrong right away. So for now this review will stand, for now. So this unit already comes pretty much put together. For me the instructions were simple you just attach the proper colored hose to the connector as instructed in the instructions. Before I started connecting the hoses I checked double and triple checked my connectors. After my setup and flush the water taste like water we use to get from a stream in Alabama where I grew up! It’s light and clean no chemicals or additives for taste just clean delicious water! The unit is quiet and very well built in my opinion. As for the functionality it fit right under my kitchen sink perfectly. And it’s very easy to use! If you want pressure you have to get the pump version I think but the water pressure is fine for me since it’s for cooking and consuming more water into our diets. All in all we love it! It goes well want kitchen decor and it’s so easy to use just like your regular faucet!
I replaced an old system with nu aqua. Thing is light years ahead. My old one was really slow. Probably the 100gpd (gpm?) flow rate is why the tank is filling up twice as fast as my old ispring system. This thing comes with a PPM meter so I can conveniently check the water quality. I went from 250ppm to an incredible 15PPM! Not sure what is in that water but nice it’s gone.Took a morning and I just followed instruction manual and the video installation guide to install. Most of the system was already preassembled so it only took me about 45 mins to install. Water tastes fantastic.I also got the ice maker kit and hooked it up to my fridge. My ice went from cloudy to completely see through! Kinda makes it feel more luxurious for whatever reason.
I replaced an old system with nu aqua. Thing is light years ahead. My old one was really slow. Probably the 100gpd (gpm?) flow rate is why the tank is filling up twice as fast as my old ispring system. This thing comes with a PPM meter so I can conveniently check the water quality. I went from 250ppm to an incredible 15PPM! Not sure what is in that water but nice it’s gone.Took a morning and I just followed instruction manual and the video installation guide to install. Most of the system was already preassembled so it only took me about 45 mins to install. Water tastes fantastic.I also got the ice maker kit and hooked it up to my fridge. My ice went from cloudy to completely see through! Kinda makes it feel more luxurious for whatever reason.
Just got my new reverse osmosis water filter system a few days ago. Setting it up was a breeze, taking less than an hour. The YouTube tutorial was super helpful and way easier to follow than the written instructions.The water tastes incredible! No more weird plastic taste from bottled water. Plus, I love that it comes with a water shut-off valve, just in case of any leaks. It gives me peace of mind knowing that I won't flood my house.The system itself feels really well-made. The parts are sturdy and the color-coded tubing made the installation process a lot smoother.If you're looking for a reliable and easy-to-install water filter system, I highly recommend this one.
It came time again.. to buy new pitcher filters but this time I was sick and done. For years I have been bound to a continual labor. Drink one cup of water then a second cup and now a debt must be paid. I must bring the pitcher to the sink and stand, toe the line, and wait with great patients as my pitcher filled. Day after day year after year I toiled at that work. No more!! My domestic routine Gods have died and I have found a new way, the way of the NU Aqua Countertop Water Filter System. This thing was super easy to set up. Took lest time then it would have taken me to clean my pitcher and swap a filter. After letting it run for a few minutes per the instructions to get any excess carbon out it started cranking out tasty clean water. Super simple, and the quality for the price is super solid too. Not made of metal or anything but the quality and durability of the housing/filter feels like solid. highly recommend.
This is a great product! Installing it was an absolute breeze! Literally takes 1 min. The pressure the water comes out at is really good, you don't have to wait for days to get what you need from it. Takes up minimal space on my counter as you can see in the picture. Also the taste from it is totally fine (way better than my tap water tastes that's for sure!). Didn't I mention it is easy to use? Totally is, I can switch between regular tap water and using the filtered water with just a twist of the knob. I'm excited to see how well it holds up in the coming months, but so far I'm loving it!
The Tesla of water filters!I have been using this system for about three months! The water tastes crisp, clean, and is so good! I will never go back to bottled water. This system was easy to install and took me a little over an hour.The Good!1. Easily the best tasting water I have ever had! (Get the remineralization filter)2. Leak proof (Includes a safety valve that automatically stops water flow in case of a leak.)3. Takes up minimal space under my sink.4. System runs quiet and barely makes any noise.5. Water flow speed is fast! (Takes about 3 seconds to fill a cup)6. Excellent customer service. When I needed help setting up the system, I easily found online chat support and got quick answers to my questions.The Bad1. The instructions could be much better. ( Skip the manual and just watch the video)2. To get the lifetime warranty, you must sign up for the replacement filter service. There is no option to purchase a warranty extension.3. Needed to buy extra parts to connect my fridge and ice maker. It would've been nice if they were included.Overall, I am really happy with this system! It's a great choice for anyone wanting better water quality. Don't worry about the installation, it’s pretty straightforward if you have some time and patience.
I just installed the unit, and it seems to be working fine and the water is great so far. Wasn't hard to install, just follow the steps and take your time. Also got the refrigerator connection hooked up without any trouble so thanks!
Install was pretty straightforward. If you have any mechanical ability you should be able to manage it. The instructions are a bit vague. They rely on the pictures to guide you. I replaced a 40 year old Culligan system. Bought this unit for the price point. We’ll see about the longevity. Clean looks for as many filters involved.
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Tomé la decisión de dejar de comprar agua embotellada y buscaba un buen filtro. Definitivamente este cubrió las expectativas, instalación rápida y sencilla, además de ser fácil de usar.
Good instructions for easy install. We installed this in our laundry room, right next to the kitchen. Water quality is excellent. Very happy with the system. Now we don't have to haul the 5 gallon bottles of water into the house anymore!
It was very easy and very basic to install anybody could do it besides that the water taste amazing and their custumer service is very good
This is an addendum to the review I left earlier. It illustrates the various TDS readings of unfiltered versus filtered water.
