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Our Verdict (Best For)
The ProOne Pitcher with the legacy G2.0 M filter delivered water that tasted and smelled 100% clean. But otherwise performance was abysmal: In our lab testing, benzene and radon were detected in our filtered water above the strictest health guidelines (we observed similar results testing the ProOne Traveler+ with the legacy G2.0 5” filter). Also, too many contaminants weren’t 100% removed, including a 200% increase in barium. And while we appreciate ProOne’s very extensive third-party testing for contaminant reduction, at least some of it wasn’t performed for the full claimed filter life. Also, no actual NSF certifications. Finally, it took 12 hours to filter just 90% of the water. Bottom line: Do not buy.
The ProOne is a water filter pitcher. It’s designed for use as a drinking water filter and can purify both tap water and properly disinfected well water.
As usual, we’ve tested the pitcher with our own hands:
- Hands-on experience: We assembled, primed, used, and maintained it.
- Filtration effectiveness: We sent an unfiltered and a filtered tap water sample to a professional lab for analysis in order to determine real-life contaminant reduction capabilities. Plus, we checked for NSF certifications and other test data.
- More testing: We performed a taste & odor test as well as a filtration speed test.
- All other product aspects: We considered initial + long-term cost, product warranties, additional features, frequent customer complaints, etc.
Contents
Final Rating: /5.00
Filtration: /5.00
Usability: /5.00
Costs: /5.00
| Type: | Water Filter Pitcher |
| Price (Jan 20, 2025, No Short-Term Sales): | Currently Not Available |
| Yearly Cost for 300 gal Based on Rated/Claimed Filter Life (Mar 19, 2024): | ~$55-85 (Might Be Considerably Higher Depending on What You’re Trying to Remove) |
Final Rating: /5.00
What We Like Most
- Filtered water tasted and smelled 100% clean.
- Extensive third-party testing for contaminant reduction (but at least some not over full filter life).
- Easy to set up and maintain.
- Filters can be cleaned and reused.
- Comes with a fruit/vegetable infusion tube for flavored water.
What We Don’t Like
- Failed to fully remove 5 (6) contaminants in our lab testing, including a 200% increase in barium.
- Benzene and radon appeared in our water post-filtration above the most stringent health guidelines (potential benzene leaching also seen in our ProOne Traveler+ lab test using the G2.0 5″ filter).
- No actual NSF certifications for contaminant reduction.
- Limited 6.75-cup size.
- Extremely slow filtration speed (12+ hours).
- Lid must be removed to fill, and the lid and reservoir fall out when pouring the last water or when there is unfiltered water in the reservoir.
- No filter life indicator.
- Rather expensive to purchase, and 225 gal claimed filter life could be unrealistic increasing maintenance cost.
- Short 120-day warranty.
- 3rd party customers complained about clogged and leaking filters.
How the ProOne Water Filter Pitcher Compares to…
10 Other Water Filter Pitchers
In this video, Mike highlights our water filter pitcher top picks. The ProOne was included in our testing, but didn’t make the cut.
Please note: Our full guide on the best water filter pitchers is available here.
Video Chapters + Comparison Sheet
- Link to Comparison Sheet
- 00:00 – Intro
- 00:58 – Our 11 Pitchers
- 02:00 – How We Tested & Ranked
- 04:29 – Pitcher Assembly & Filter Priming
- 05:21 – Sampling Process
- 06:18 – Taste & Odor Test
- 06:58 – Speed Test
- 08:28 – Best Overall (Clearly Filtered)
- 12:27 – Best for Usability + Affordability (Waterdrop)
- 15:45 – Best for Bacteria & Cyst (LifeStraw)
- 18:30 – Best for Nitrate (ZeroWater)
- 23:00 – Best for Fluoride
- 23:39 – Summary
Full Analysis of the ProOne Water Filter Pitcher
Filtration: /5.00
1. Lab Results: /5.00
Remember that our before vs after lab comparison is not an exact science. It’s informational and subject to variability, inaccuracies, and interferences caused by natural fluctuations in water quality, accidental contamination, human error, instrumentation issues, and more. Furthermore, our lab-testing is limited to those contaminants present in our water supplies and at their respective concentrations. As such, it can only give us a general idea for how effective a certain water treatment product might be.
Lab Results Chart
| Potentially Harmful | Aesthetic Issues | Feed Water Level | Filtered Water Level | Reduction Rate | |
| Water Disinfectants | |||||
| Chlorine (mg/L) | ✖ | ✖ | 0.2 | 0 | 100% |
| Disinfection Byproducts | |||||
| Bromodichloromethane (µg/L) | ✖ | 0.58 | 0 | 100% | |
| Bromoform (µg/L) | ✖ | 0.75 | 0 | 100% | |
| Dibromochloromethane (µg/L) | ✖ | 0.94 | 0 | 100% | |
| Metals | |||||
| Copper (mg/L) | ✖ | ✖ | 0.01 | 0 | 100% |
| Barium (mg/L) | ✖ | 0.01 | 0.03 | 200% Increase | |
| Boron (mg/L) | ✖ | 0.04 | 0.01 | 75% | |
| Lithium (mg/L) | ✖ | 0.01 | 0.01 | 0% | |
| Strontium (mg/L) | ✖ | 0.18 | 0.08 | 56% | |
| Salts | |||||
| Nitrate (N) (mg/L) | ✖ | 1.65 | 1.43 | 13% | |
| Fluoride (mg/L) (Flawed?) | ✖ | 0.46 | 0.11* | 76%* | |
| Other | |||||
| Uranium (µg/L) | ✖ | 7 | 0 | 100% | |
| Aesthetic Parameters | |||||
| Hardness (mg/L) | ✖ | 111.9 | 97.5 | 13% | |
| Impurities NOT Detected in Unfiltered Tap Water Sample | |||||
| Benzene (µg/L) | ✖ | 0 | 0.59 | ||
| Vanadium (mg/L) | ✖ | 0 | 0.01 | ||
| Radon (pCi/L) | ✖ | 0 | 471 | ||
| *Due to known interferences of the applied testing method, we assume fluoride levels must be taken with a grain of salt. | |||||
| Explanation: | |||||
| Full Removal | |||||
| Considerable Reduction | |||||
| Concentration More Than Double of Unfiltered Water Sample | |||||
| Potential Leaching Reached or Exceeded the Strictest Public Health Guideline We Could Find | |||||
*100% means reduction to below the minimum detection level. To learn more about our testing procedures check our editorial guidelines.
Link to Filtered Water Report
Link to Unfiltered Water Report
Usability: /5.00
Costs: /5.00
Please note: This page is still a work in progress. Additional content and details will be added shortly – stay tuned!
Further Reading
About the Author(s)
Mike is a former team member who made his mark by contributing to our first big water filter pitcher comparison video and reviewing a couple POE water treatment systems. Beyond the world of water solutions, Mike is a full-time blogger and YouTuber alongside his wife, Ashley. Together, they’ve transformed their passions into a creative space called Joyfully Growing, where they share DIY tutorials and simple home improvement tips to help others love the homes they’re in.
Raoul has a background in mechanical engineering and has been writing about home water treatment since 2015. He designs our product review processes, analyzes the results, and ties everything together. As editor-in-chief, he tries hard to keep the whole operation running smoothly behind the scenes.