Review: ProOne Traveler+ Gravity Water System With G2.0 5″ Filter

Full Analysis of the ProOne Traveler+

Please note: We tested the ProOne Traveler+ using one legacy G2.0 5″ filter.

Filtration: 1.29/5.00

In our filtration category, the ProOne Traveler+ scored 1.29/5.00. In our lab test, only 5 impurities were removed to 100%, while others weren’t reduced by much or at all, and 2 even increased considerably, one well above the strictest health guideline. Despite that, the taste and odor of the filtered water were perfect. While ProOne backs their G2.0 filter elements with NSF and other testing for well over 200 contaminants, which is good, none were NSF-certified, and at least some were not tested for their 900-gallon claimed filter lifespan.

1. Lab Results: 1.79/5.00

In our lab testing comparing a filtered vs unfiltered tap water sample, the ProOne Traveler+ only removed 5 impurities below the minimum detection level, and the following were not removed, partially removed, or increased:

• Bromodichloromethane and dibromochloromethane, common disinfection byproducts, were reduced by 76% and 81%, respectively. This isn’t terrible, but almost all the other water filters we tested completely removed these substances.
• Barium was not removed at all, and instead saw a 125% increase. While any increase is concerning, at least at 0.09 ppm it was considerably lower than the strictest (EWG) health guideline we found, set at 0.7 ppm. Interestingly, we saw an even higher increase in barium (200%) when we tested the ProOne pitcher with the legacy G2.0 M filter element as part of our big water filter pitcher comparison.
• Boron was only reduced by 33%, which is rather poor.
• Lithium had 0% removed. But to be fair, lithium was at the lowest possible level and we possibly would have seen at least some reduction with the ProOne if pre-filtration levels had been higher.
• Strontium was only reduced by 30%, which also isn’t great.
• Nitrate was only reduced by 24%.
• Fluoride was reduced between 67% and 99%, which was actually a really high reduction rate!
• Benzene increased from none detected to 0.72 ppb. We find this especially concerning given that it’s nearly five times higher than the strictest (OEHHA) health guideline we found, set at 0.15 ppb with leukemia as the Health Risk Category. Again, interestingly enough, the lab also found benzene in our filtered water when we tested the ProOne pitcher + G2.0 M filter element. This, and the fact that, so far, none of the other gravity water filters we tested showed any benzene at all, suggests a potentially serious leaching issue.

Lab Results Chart

*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

2. NSF Certifications and Other Test Data

The ProOne Traveler+ was thoroughly tested against NSF and other standards for the reduction of 272 contaminants, which is very good (all test data can be found here). However, ProOne did not pursue any actual NSF certifications. And for at least some contaminants, they only tested for 5 to 200 gallons rather than the 900 (or 1,000) gallon lifespan they claim. Another issue is that most of the company’s test data is unclear on whether the 5″ or 7″ filters were being tested, so we cannot say which filter the data applies to. Finally, their official testing showed that ProOne filters could remove certain bacteria and parasites from non-potable water. However, keep in mind that boiling is the best way to deal with waterborne diseases in non-potable water, followed by chemical disinfection.

3. Filtration Process

The ProOne Traveler+ uses a gravity-fed filtration process. Water is filtered through a silver-infused (bacteriostatic) outer ceramic shell with a carbon-based granular media core.

4. Taste and Odor Test

The taste and odor of the filtered water were perfect.

Usability: 3.50/5.00

The ProOne Traveler+ was easy to set up, use, and maintain. While the filter’s initial priming was slow, that’s pretty standard for home gravity filters. However, the daily filtration speed was also very slow using the one filter element included in the package. One thing we liked was how the included stand allows you to push the unit farther back on the counter while still fitting a glass underneath.

1. Initial Setup

The ProOne Traveler+ was very easy to set up. The only downside: Initial filter priming was slow. Here is an overview of the process:

1. Wash the system with dish soap or a 50/50 vinegar and water solution.
2. Install the lid knob inserting the screw and washer from below, tightening it with a screwdriver.
3. Install the spigot, applying a nylon washer and a stainless steel washer on both sides, and secure it with a nut.
4. Tighten the spigot nut with the included spigot wrench to prevent leaks.
5. Place a rubber washer on the filter stem and insert it into the holes in the upper chamber.
6. Use a wing nut to secure the filter(s) in place, careful not to over-tighten.
7. Place the upper chamber onto the lower chamber and apply the lid.
8. To prepare the system, run 2-3 tanks of water through it, discarding the water each time.

2. Everyday Use

While everyday use was easy and straightforward (simply fill the upper chamber with water and wait for it to filter), the filtration speed was slow. On the plus side, though, we liked how the tank stand allows you to push the unit farther back on the counter while still fitting a glass underneath, which made storage and dispensing convenient.

The Traveler+ is also very portable thanks to its sturdy design, ease of disassembling, light weight (6.2 lbs with filter installed), and ability to transport it with the upper tank stored in the lower tank for compactness.

3. Filtration/Dispensing Speed Test

Using the one filter element the system came with, it took the ProOne Traveler+ 2:16 hours to dispense 4 cups of filtered water (after adding 2 gallons to the tank), so rather long. However, you could speed things up by installing an additional filter element. Plus, you also have 2.25 gallons of storage capacity, so you should have enough filtered water if you plan ahead.

4. Maintenance (Filter Replacements)

There is no filter life indicator, but the company suggests a 900-gallon or 6-month (or 1,000-gallon and 6-12 month) lifespan. They also suggest replacing the filter if you notice any taste or odor in your water or if the filtration speed has slowed and cleaning the filters doesn’t speed it up. Replacing the filters is easy and self-explanatory.

Costs: 3.92/5.00

1. Upfront Price

As of January 2025, the ProOne Traveler+ system including 6″ tank stand costs $209.95 which seems affordable, but remember that you only get 1 G2.0 5″ filter element!

2. Long-Term Expenses for Filter Replacements

Using two filters in parallel (which would increase filtration speeds) would result in an annual cost of about $270 for the 5″ filters or about $290 for the 7″ filters which is pretty high for a home gravity water filter and hard to justify given the poor filtration performance.

Additional Ranking Factors

1. Stainless Steel Parts

The 304 stainless steel tanks and spigots are nice and durable. They are even offered in polished or brushed finishes, so you can choose one to match your decor.

2. Excellent Long-Term Warranty

The manufacturer offers a 5-year (limited) warranty on all stainless steel parts. Filter elements are warranted for 1 year.

3. Frequent Customer Complaints

Frequent 3rd-party customer complaints included taste issues, clogged filters, slow filtration, and leaking from the dispenser.

Bottom Line: One of the Lowest-Performing Gravity Filters We’ve Tested

The ProOne Traveler+ did not perform very well at all in our testing, scoring a final rating of just 2.26 out of 5.00. This was primarily due to very poor results in our lab testing, where the ProOne only removed 5 contaminants to below the minimum detection level. All other contaminants were only partially reduced or not at all, and 2 increased – primarily benzene to nearly 5 times higher than the strictest (OEHHA) health guideline we could find. Besides, there are no NSF certifications for contaminant reduction and the 3rd party testing wasn’t (always) performed to the full filter life. On the upside, taste and odor of the filtered water were great!

Initial setup, everyday use (we like the tank stand), and maintenance were straightforward. However, the filtration speed was pretty poor with just 1 filter element included. The cost of annual filter replacements also seems pretty high, considering its poor filtration results. The 5-year limited warranty on all the stainless steel parts was a plus.