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Our Verdict (Best For)
The SimPure Y7P-BW is a bit of a mixed bag. Although the touch screen can be finicky, usability is generally solid with a slim design. Also, the system wastes very little water and achieved decent results in our lab testing for contaminant reduction. The filtered water tasted and smelled great, too. Still, the biggest strike against the SimPure was the styrene that appeared post-filtration at levels above the strictest OEHHA health guideline. Furthermore, despite SimPure’s testing against NSF and other standards for 17 contaminants, the Y7P-BW doesn’t hold any actual NSF certifications. Bottom line: There are better countertop ROs out there.
The SimPure Y7P-BW is a countertop reverse osmosis system that doesn’t require a plumbing connection. 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 system with our own hands:
- Hands-on experience: We installed/assembled, 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, a filtration speed test, and a wastewater 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: | Countertop Reverse Osmosis System |
| Price (Jan 20, 2025, w/o Short-Term Sales): | $369.99 (Use Code SPY7P for 20% Off!) |
| Estimated Yearly Cost Based on Rated/Claimed Filter Life (Aug 28, 2024): | ~$120 |
(Use Code SPY7P for 20% Off!)
Final Rating: /5.00
What We Like Most
- Achieved good results in our lab testing for contaminant reduction.
- Filtered water tasted and smelled perfect.
- Third-party tested for contaminant reduction (but not all performed for full filter lifespan and we miss most organics).
- Easy to set up, use, and maintain, with continuous dispensing or set amounts, and a slim design, and one-touch flushing.
- Produced very little wastewater in our test.
- Filter life indicator + water shortage and change reminders.
- Replacement filters are relatively cheap.
- 2-year warranty with registration (1 year without).
What We Don’t Like
- Styrene appeared in filtered water above the strictest health guidelines for cancer risk.
- No actual NSF certifications for contaminant reduction.
- Touch screen is not always responsive, and the max fill line is hard to read.
- 3rd-party customers complained about units that stopped working after a couple of months and unsatisfactory filtration results.
How the SimPure Y7P-BW Compares to…
25 Other Countertop Water Filters
In this video, Sara highlights our countertop water filter top picks. The SimPure Y7P-BW was included in our testing, but didn’t make the cut.
Please note: Our full guide on the best countertop water filters is available here.
Video Chapters + Comparison Sheet
- Link to Comparison Sheet
- 00:00 – Intro
- 00:33 – Our 26 Countertop Filters
- 03:14 – How We Tested & Rated
- 09:11 – Best Overall (AquaTru Classic)
- 14:33 – Best RO Budget Pick (AquaTru Carafe)
- 16:50 – Honorable Mention (Bluevua RO100ROPOT)
- 18:27 – Best “Regular” Filters (Aquasana CWM & ZeroWater)
- 27:47 – Best “Regular” Budget Pick (Waterdrop ED04)
- 33:04 – Summary
9 Other Countertop Reverse Osmosis Systems
In this video, Sara highlights our countertop RO top picks. The SimPure Y7P-BW was included in our testing, but didn’t make the cut.
Please note: Our full guide on the best countertop RO systems is available here.
Video Chapters + Comparison Sheet
- Link to Comparison Sheet
- 00:00 – Intro
- 00:27 – Our 10 Countertop ROs
- 01:15 – How We Tested & Rated
- 04:23 – System Setup & Filter Priming
- 04:38 – Sampling Process
- 05:41 – Lab Testing Disclaimer
- 06:07 – Taste & Odor Test
- 06:28 – Speed Test
- 07:05 – Pure-to-Drain Ratio Test
- 07:31 – Best Overall (AquaTru Classic)
- 10:49 – Best Budget Pick (AquaTru Carafe)
- 12:30 – Best for Hot Water (NU Aqua & APEC)
- 15:30 – Honorable Mention (Bluevua)
- 16:00 – Summary
Full Analysis of the SimPure Y7P-BW
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) | ✖ | ✖ | 0.44 | 0 | 100% |
| Disinfection Byproducts | |||||
| Bromodichloromethane (µg/l) | ✖ | 2.68 | 0 | 100% | |
| Bromoform (µg/l) | ✖ | 4.42 | 0 | 100% | |
| Dibromochloromethane (µg/l) | ✖ | 5.32 | 0 | 100% | |
| Chloroform (µg/l) | ✖ | 1.36 | 0 | 100% | |
| Metals | |||||
| Copper (mg/L) | ✖ | ✖ | 0.01 | 0 | 100% |
| Iron (mg/L) | ✖ | 0.01 | 0 | 100% | |
| Aluminum (mg/L) | ✖ | ✖ | 0.01 | 0 | 100% |
| Barium (mg/L) | ✖ | 0.05 | 0 | 100% | |
| Boron (mg/L) | ✖ | 0.1 | 0.05 | 50% | |
| Zinc (mg/L) | ✖ | 0.02 | 0.01 | 50% | |
| Lithium (mg/L) | ✖ | 0.01 | 0 | 100% | |
| Strontium (mg/L) | ✖ | 0.53 | 0.01 | 98% | |
| Salts | |||||
| Fluoride (mg/L) | ✖ | 0.42 | 0.13 | 69% | |
| RO Salt Rejection | |||||
| TDS (mg/L) | ✖ | 395.2 | 26.4 | 93% | |
| Impurities NOT Detected in Unfiltered Tap Water Sample | |||||
| Nitrate (N) (mg/L) (Flawed?) | ✖ | 0 | <0.5* | ||
| Styrene (µg/l) | ✖ | 0 | 1.06 | ||
| *We’re confident the nitrate increase is due to natural fluctuations and not an issue with leaching, as we’ve found significant amounts of nitrate in our water supply before. | |||||
| 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!
About the Author(s)
Sara has been a lifelong home-improvement fan (she’s been hooked on This Old House since she was five) and taught herself any project she didn’t already know by watching YouTube tutorials. She is also an award-winning filmmaker. Armed with this skillset, Sara installs, primes, samples, uses, and maintains nearly every point-of-use water treatment systems we test – then brings her results to life on camera for our YouTube channel.
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.