SimPure Y7P-BW Review: Lab Analysis & Hands-On Testing

Full Analysis of the SimPure Y7P-BW

Filtration: 3.92/5.00

The SimPure Y7P-BW countertop RO system scored 3.92/5.00 for filtration. How? Most importantly, it achieved mediocre results in our 2024 lab testing, while 2025 results were excellent. The filtered water was odorless and tasted clean (2024) or much improved compared to our tap water (2025). In addition, the system has no NSF/ANSI-certified contaminants. It does have 3rd party testing for contaminant reduction but that lacks most organics and at least some wasn’t performed to full filter life.

1. Lab Results: 5.00/5.00 (2025) & 3.40/5.00 (2024)

In our 2024 and 2025 lab tests comparing an unfiltered and a filtered tap water sample, the SimPure Y7P could remove 10 undesirable impurities and contaminants to below the minimum detection level (so essentially to 100%): chlorine, bromodichloromethane, bromoform, dibromochloromethane, copper, barium, lithium, iron, manganese, and aluminum.

The following substances remained in our water:

• Chloroform was completely removed in 2024 and removed by a very high 98% in 2025.
• Boron was reduced by a moderate 50% in 2024. In 2025, it was reduced by a solid 68%.
• Strontium was reduced by a very high 98% in 2024 and was completely removed in 2025.
• Zinc was reduced by a moderate 50% in 2024 (not present in 2025).
• Nitrate was reduced by a very high 92% in 2025, which is congruent with SimPure’s third-party data (96.26% nitrate reduction). In 2024, nitrate was not present in our feed water and was measured at <0.50 ppm in the filtered water. While this may suggest leaching at first glance, we’re confident this increase is due to natural fluctuations, as we’ve found significant amounts of nitrate in our water supply before.
• Fluoride was reduced by a solid 69% in 2024. Once more, our lab findings initially may seem to contradict Simpure’s data, which claims the reduction of fluoride by an average of 97.28%. However, this apparent discrepancy may partly be explained by very different test conditions: Simpure’s feed water had a 25x greater concentration of fluoride (~10.3 ppm) compared to our feed water (0.42 ppm). Our lab’s fluoride detection method might also play a role. In our 2025 test – fluoride in the feed water was at 0.989 ppm, plus we used a different and presumably more precise fluoride detection method – fluoride was completely eliminated.

Finally, TDS decreased by 93% in 2024 and by 95% in 2025. While TDS should not be interpreted independently, as it does not override inadequate removal of individual contaminants, ≥90% TDS reduction is high (≥95% is very high) and shows that the RO membrane works as intended.

Aside from contaminant reduction, we found styrene in our 2024 filtered water that was not present in the unfiltered water, suggesting potential leaching. At a concentration of 1.06 ppb, this is more than double the strictest health guideline we could find of 0.5 ppb per the OEHHA. Consequently, we feel this amount of styrene is concerning.

We did not find any evidence of potential leaching in 2025.

Lab Results Charts

2. NSF/ANSI Certifications and Other Test Data

The SimPure has no NSF/ANSI certifications for contaminant reduction.

While it has 3rd party testing for the reduction of 17 contaminants, it lacks most organics, it doesn’t reference NSF/ANSI standards for all impurities, and at least some wasn’t performed to full filter life.

Reported reduction rates include:

• TDS (98.64%)
• Chromium 6 (>99.28%)
• Cadmium (>99.27%)
• PFOA (>98.75%)
• PFOS (>98.30%)
• Total coliforms (99.99%)
• Fluoride (97.28%)
• Nitrate (96.26%)
• Arsenic (99.65%)
• Lead (>98.46%)
• Mercury (>98.34%)
• Copper (99.50%)
• Barium (>99.95%)
• Selenium (>95.14%)
• Chlorate (>96.09%)
• Dissociate chlorine residue (>99.45%)

Reduction rates are per SimPure’s test report.

3. Filtration Process

We have 2 filter cartridges and a UV-C light which comprise 4 filtration stages:

• Stages 1+2 are performed by the composite pre-filter (PP sediment pre-filter + activated carbon block). PP sediment is mechanical filtration, acting like a sieve to remove solid, undissolved particulates such as dirt or rust. Activated carbon removes things like bad tastes and odors, chlorine/chloramine, disinfection byproducts and other organics, as well as certain metals. In addition, the block structure provides fine mechanical filtration due to its smaller pore size compared to granular carbon. By removing chlorine and other contaminants, this pre-filter protects the RO membrane from damage.
• Stage 3 is performed by the RO membrane, which uses reverse osmosis to effectively remove the vast majority of contaminants and minerals.
• Stage 4 is a UV post-filter which exposes the filtered water to germicidal UVC radiation prior to dispensing, inactivating microorganisms. This provides chemical-free disinfection; however, in our view, it should not be relied upon to make non-potable water safe to drink, but rather to help control microbial regrowth in stored water and prevent off-tastes from stagnation.

4. Taste and Odor Tests

In our 2024 tests, the filtered water was odorless and had a perfectly clean taste. In 2025, the water was odorless as well, and the taste was much better than our tap water but not 100% perfect.

Usability: 3.80/5.00

The SimPure achieved a usability score of 3.53/5.00, based on its performance in the following categories:

1. Initial system assembly including filter priming (0.80/0.80)
2. Everyday use (2.50/3.70)
3. Filter replacements (0.50/0.50)

1. Initial Setup: 0.80/0.80

Assembling the SimPure is easy. In addition to clear, illustrated directions in the user manual, there is a tutorial video on YouTube.

Here’s a quick breakdown of the setup procedure:

1. Install drip tray beneath the spout; note that both of the filters come pre-installed.
2. Remove and fill the feed water tank with tap water to the MAX level, then reinstall into the base and close the cover.
3. Place a large container on the drip tray and have another ready to alternate.
4. Plug the power cord into a power outlet to turn unit on; all indicator lights will turn on briefly.
5. The system will automatically begin flushing the membrane for 30 seconds – this process is internal and the water will be returned to the feed tank. Next, the filtering light will turn on.
6. The system will automatically start to filter, and the pure water will be transferred to the internal pure water reservoir. Wait until the filtering indicator light turns off (about 10 minutes), which indicates the internal pure reservoir is full.
7. Press the “Flushing” button to empty the internal pure water reservoir. The filtered water will flow from the spout until the pure reservoir is empty.
8. The system will continue filtering when the internal pure tank is empty. Wait until the filtering indicator light turns off, and then push the “Flushing” button again to empty the internal pure reservoir.
9. Continue repeating the filtering and flushing process until the “Change Water” indicator light starts flashing, then empty the remaining water in the feed tank.
10. Repeat steps 2-9 for a total of 3-5 times to ensure the system is adequately flushed before using.
11. Now your system is ready to use.

2. Day-to-Day Use: 2.50/3.70

2.1 Speed & Water Capacity: 1.20/1.40

Although the SimPure lacks a carafe or external pure tank for instantly accessible water, it’s still suited for daily use. Its pump-driven dispensing speed — generally slower as is inherent to this type of countertop RO system — is acceptable, and the volume presets help offset the slower flow.

You can fill a 40-oz bottle from a single feed tank all in a single button push – no need to refill the tank in-between or wait for additional cycles of water processing. Plus most standard 40-oz bottles should fit under the spout without tilting, as its height is 9.65” from the base.

You can’t fit a standard 2-quart carafe under the spout, as it’s not high enough. However, assuming you found a container that would fit, you could still dispense 2 quarts in a single button push without refilling the feed tank. More specifically, based on a single full feed tank (1.5 gal), in our test the system could dispense 70 oz of ambient water in one go.

We also investigated how much ambient filtered water could be produced from one full feed tank, regardless of how much time or how many button pushes it took to fully process and dispense this entire volume. For the SimPure, this maximum volume was 155 oz (~19.4 cups). Assuming 25.5 cups or 31.5 cups of daily water consumption for the average US and US-family households, respectively, and 19.4 cups filtered water per full feed tank, we estimate 2 daily refills – fewer than average for the countertop ROs we tested.

Even for a pump-driven system, the SimPure still filters fast enough to meet the daily water needs of the average-sized US households, and it can handle thirst bursts. In our speed tests, it could dispense 1 cup in 19 sec and 4 cups in 1:11 min when the water was pre-processed, meaning the feed tank was filled and allowed to fully filter this water first. Upon refilling the tank, it took 3:15 min to dispense 4 cups of water.

2.2 Dispensing: 0.90/1.00

Dispensing water is easy and splashless using the intuitive but not always responsive touch screen. There’s no ramp up or down for the pour – it starts and stops as soon as you press the button.

This system has three volume presets (6, 12, or 15 oz) to choose from, or you can dispense a custom volume using the “Flushing” button. There’s also a magnetic drip tray to catch any errant droplets.

2.3 Refilling & Size: 0.40/0.70

Refilling the SimPure is less straightforward. The large tank is tall and located in the back of the unit, making it a little more difficult to remove and put back on its base. This of course depends on where you place it; plan on allowing enough space for access when choosing your setup spot. Also, the tank cover sometimes needed a little guidance to close flush.

It’s simple to keep track of when it’s time to empty the wastewater and refill, as the system has a water shortage/change indicator light on the LED display. That said, the MAX fill line on the tank is a little hard to read.

Measuring 7.5″x16.2″x16.5″ (WxHxD), the Y7P fits under standard height (18”) kitchen cabinets, and at 14.6 lbs, it’s lighter than average across the countertop ROs we tested. Its footprint is about average compared to the other tested systems, occupying 123.75 in2 (~0.86 ft2), and at almost 8” wide it is not quite streamlined enough to fit in narrow spaces.

2.3 Other: 0.00/0.60

The SimPure Y7P doesn’t provide TDS readings and, as already mentioned, there is no portable clean water tank, which lowered its usability score in our analysis.

3. Filter Replacements: 0.50/0.50

Filter replacements are easy as there are only two filters to replace. Plus, they are accessible behind the feed tank and quickly twist in/out.

The two filter change indicator lights on the control panel alert you when it is time to change each filter. Rated life for each cartridge is 528 gal or 6 months.

Assuming 500 gallons of yearly water consumption for the average household, we predict the frequency of your filter changes will be dictated by filter age rather than water consumption. Therefore, expect to replace them every 6 months.

Costs: 4.76/5.00

Based on value for money, the SimPure achieved a cost score of 4.76 out of 5.00, indicating it is priced below average for what it offers compared to competing systems (a score of 4.00 represents average value). Notably, both its upfront price and annual filter replacement costs are well below-average for the countertop RO systems we tested.

1. Upfront Price

As of November 4, 2025, the SimPure Y7P-BW is priced at $369.99. However, the manufacturer frequently offers sales, so you can get it for as little as $208.99. This is well below the $321.89 average across all the countertop ROs we tested. If there isn’t a major sale at the time of purchase, you can also apply our 20% discount code.

2. Long-Term Expenses for Filter Replacements

Based on 500 gallons consumption and a 528-gal or 6-month filter life for each filter, we estimate $96 in annual filter replacement costs, which is well below the $149.47 average across all tested systems.

3. Product Warranty

The system is covered by a 1-year warranty. However, this is increased to a long 2-year warranty upon product registration.

4. Other Cost Factors

• UV-C light prevent off-tastes from stagnation.

Additional

1. Pure-to-Drain Ratio Test

We measured a pure-to-drain ratio of ~1:0.23 (2024) and ~1:0.24 (2025), which is very low wastewater for RO systems in general and better than the average ~1:0.61 across the countertop RO systems we tested.

2. Construction

The system feels sturdy and well built, except for the hinged feed tank cover which doesn’t always line up perfectly for seamless closing.

3. Design

The SimPure has a sleek appearance.

4. Flushing Options

This system performs automatic RO membrane flushing for 30 seconds when powering it on (plugging it in) and for 18 seconds after every filtration cycle. You can also manually flush the RO membrane for up to 60 seconds by pressing and holding the “Flushing” button for 5 seconds.

While flushing extends RO membrane life, it may also waste water; however, the manufacturer states this process is internal and the flushed water will return to the feed tank for recirculation.

In addition, you can completely empty the internal pure tank (rather than flushing the RO membrane) by pressing the “Flushing” button once. This is helpful if you want to flush the system after not having used it for a while.

5. Frequent Customer Complaints

We read about issues with leaking, cracked water tanks, and malfunctioning units. Other customers complained of water with a bad, plastic, or chemical taste or smell.

We did not experience most of these issues firsthand, though we did feel that our 2025 water, while much better than our tap water, did not taste perfectly clean.

Bottom Line: No Match for Better-Performing Systems (4.07/5.00)

Filtration weighted at 60%, and usability and cost at 20% each, the SimPure Y7P-BW scored a final rating of 4.07 out of 5.00.

It’s a bit of a mixed bag. It removed most contaminants in our 2024/2025 lab tests and produced odorless water that tasted clean (2024) or much better than our tap water but not perfect (2025). However, its third-party testing misses most organics and at least some testing wasn’t performed to full filter life and/or to NSF/ANSI standards. Plus, this system has no NSF/ANSI-certified contaminants. Concerningly, it showed evidence of styrene leaching in 2024, exceeding the strictest health guideline by more than double.

That said, it’s fairly easy to setup, use, and maintain, with minor grievances (e.g. no TDS monitoring, the feed tank can be hard to remove to refill, and the touch screen isn’t always responsive). In addition, there is no carafe or external feed tank for instantly accessible water – you have to wait for it to dispense. That said, it’s still fast enough for most households, and requires fewer refills than average for a countertop RO.

Finally, it looks sleek and generally feels well-built, has convenient volume presets, wastes very little water, and is competitively priced, with low upfront and ongoing costs.

Bottom line: Solid, but we think there are better options out there.

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