For Home For Business
Classic Reverse Osmosis Filter with blue label, designed for clean water purification.
Classic Reverse Osmosis Filter displayed in a kitchen setting with various AquaTru purifiers.
Classic Reverse Osmosis Filter with easy-to-follow steps for changing filters, displayed in a kitchen setting.
Classic Reverse Osmosis Filter, stage 3, lasts 2 years or 1,200 gallons, suitable for under sink models.
Reverse Osmosis Filter certified by IAPMO, reduces lead and arsenic, lasts 2 years or 1,200 gallons.
Classic Reverse Osmosis Filter with a woman holding it, promoting auto-scheduled deliveries for clean water.

Classic Reverse Osmosis Filter

$59.95

Powerful membrane that filters down to a microscopic level.

For AquaTru Classic, Connect & Under Sink models.

  • Removes arsenic, lead, cysts, copper & more

  • Filters to 1/10,000 of a micron

  • Lasts 2 years or 1200 gallons
Load video: Carafe benefits and features videoCarafe benefits and features video

How Your Filters Work Together

Every AquaTru filter has one job, and they work together to get your water fully purified.

  • Pre/Carbon Filter: Captures sediment and rust, then reduces chlorine and chloramine for cleaner-tasting water. Replaced every 6-months.
  • Reverse Osmosis Filter: Reduces lead, arsenic, chromium-6, and other heavy metals. Replaced every 2-years.
  • VOC Carbon Filter: Reduces VOCs and "forever chemicals" like PFOA and PFOS. Replaced every 1-year.

*This video depicts filters user for the AquaTru Carafe. Verify which AquaTru purifier you have before purchasing filters.

Dr. Corey Herbert stands confidently with arms crossed beside an AQUA Tru water filtration system.

"One of the most popular pitcher filters that everybody thinks of is only certified to remove 8 contaminants. AquaTru is certified to remove 84. There’s really no comparison."

— Corey Hebert, MD & Chief Medical Officer

Frequently Asked Questions

What makes AquaTru different from other water purifiers?

Powered by advanced Reverse Osmosis technology, AquaTru is the only countertop RO system independently tested and certified to NSF by IAPMO to remove 84 harmful contaminants—including lead and forever chemicals (PFOA/PFOS)—delivering proven, bottle-quality water backed by third-party verification.

What contaminants does AquaTru reduce?

AquaTru is certified to reduce 84 harmful contaminants, including lead and forever chemicals (PFOA/PFOS), chlorine, fluoride, arsenic, nitrates, and even microplastics. Most filters don’t come close

How long do AquaTru filters last?

AquaTru filters last from 6 months up to 2 years, making maintenance simple, affordable, and hassle-free.

What's the difference between Classic, Carafe, and Under Sink models?
  • Classic: Countertop design, 0.75-gallon tank, great for families.
  • Carafe: Compact, 0.5-gallon glass carafe, perfect for smaller households.
  • Under Sink: High-capacity, hidden installation, best for high water demand.
Does AquaTru offer a warranty?

Yes, every AquaTru purifier comes with a 1-year limited warranty, with extended coverage available. If there’s ever an issue with materials or workmanship, we’ll repair or replace it for you. Customers are responsible only for shipping and processing fees on returns.

Overall rating: 4.908046 / 5 from 87 reviews.

AI Generated Review Summary

The Classic Reverse Osmosis Filter is highly regarded for its powerful membrane that filters water down to a microscopic level. Users find the water tasting exceptional and the system convenient. The filter is praised for its effectiveness in removing contaminants and its longevity, lasting up to 2 years or 1200 gallons.

Summary topics

  • Water Quality (35%): A substantial number of customers appreciated the AquaTru water purifier, describing it as the best ever.
  • Water Taste (10%): It was observed by customers that the water from the product is the best tasting they have ever experienced.
  • Filter Effectiveness (31%): Many customers appreciated the filter, stating that it is great and they are very happy with it.

Review topics: ["quality","customer service","service","filter","water","system","aquatru","tasting","taste","difference"].

Review highlights

  • "Filter was very easy to install very good tasting water now" — laurie h.
  • "AquaTru Is great company with great service and great equipment along with some of the best water." — Patrick M.
  • "Purest and best tasting water" — MJ L.

Reviews

This family has owned many

"This family has owned many units over the years and love this most efficient and economical system. But it would be nice if the outlet in front and the two in back did not leak. The intake opening leaks, maybe more than the others. More than one of our units have had the same problem after the machine has finished and the tanks are emptied. We use the descaler and change the filters before the required time. We have a dedicated sponge just for that... but we should not have to do that, in my view. In your experience, what might be going on here? Reno NV"

— Sharon M. (5/5)

Best tasting water ever. My

"Best tasting water ever. My water report had bad things in it. A 1/2 carbon lasts100 gallons. A 3/RO filter is lasting 425gallons. A 4/VOC lasts 200 gallons. We are now drinking Aquatrue water least 4 liters per person per day just at home."

— Benjamin D. (5/5)

Thank you! The last time

"Thank you! The last time I respond to this I told about my problems with the tank not filling. Your customer service got in touch with me and sent out a new manifold which fixed the problem! We are so happy to have our filter back! We just love the under counter filter and we’re so pleased they responded with the perfect fix!"

— Amy T. (5/5)

I've been using your counter

"I've been using your counter top machine for over a year. No glitches, all good experience every glass. Also, the filters are SOOOO easy to replace! Thanks!"

— Kim W. (5/5)

We are on a well

"We are on a well so we need to filter the drinking water we consume. Aquatru is the best. Makes really good drinking water."

— Rob H. (5/5)

Great product. Have been using

"Great product. Have been using it for a few years."

— Enid P. (5/5)

This is a great product!

"This is a great product! I’m glad I found this company!"

— Carly A. (5/5)

I can taste as soon

"I can taste as soon as the filter goes out! Glad to have replacements."

— Tiffany B. (5/5)

"EXCELLENT REVERSE OSMOSIS WATER FILTER!!!"

— Nicholas (5/5)

Indeed yes, It's truly a

"Indeed yes, It's truly a wonderful water purifier,....thank you sooo very much .... !!!!!!"

— Michael C. (5/5)

Q&A