Sara reviews the Waterdrop X12 Reverse Osmosis System including lab testing for real-life contaminant reduction. In our opinion, the Waterdrop X12 is the best under sink reverse osmosis system on the market in the premium price segment!
*Buy the Waterdrop X12:*
*→ https://www.waterdropfilter.com/products/reverse-osmosis-system-x12?ref=aqhvda420xp – Use Code “X12BOS” for 5% Off on Top of Any Current Waterdrop Sale!*
*Google sheet with our full analysis of the Waterdrop X12 and 10 other under sink reverse osmosis systems including lab reports: https://docs.google.com/spreadsheets/d/1CKTCLnp6ruZ7SIy1qjW4UaWPmYC91kqg-yyisoAVPQc/*
*If the above link doesn't work, please try this shortened link: https://bit.ly/under-sink-RO*
*Comparison video of the 11 best under sink reverse osmosis systems in 2025: https://www.youtube.com/watch?v=2lVPi2g0VGI*
Comparison video of the 10 best countertop reverse osmosis systems in 2025: https://www.youtube.com/watch?v=-W65jKwcE2w
Table of Contents
00:00 – Intro
00:29 – General Information
00:56 – How We Tested
02:05 – Lab Results
04:53 – NSF Certification & Testing
05:23 – Taste & Odor Test
05:34 – Filtration Process
06:08 – Installation & Filter Priming
07:25 – Everyday Use
07:57 – Faucet & Energy Saving Mode
09:02 – Speed Test
09:29 – More Features & Pros
09:57 – Wastewater & Auto-Flushing
14:23 – Cost
15:09 – Summary
15:49 – Outro
In our opinion, the Waterdrop X12 is the best under sink reverse osmosis system in the premium price segment in 2025. For one, the system proved to be very effective in our lab testing, its filtered water tasted and smelled perfectly clean, and it combines great usability and extremely fast filtration with a quality build.
Who Should Buy the Waterdrop X12 RO System?
The Waterdrop X12 is ideal for people who want a top notch tankless under sink RO and don’t mind a higher price tag.
Waterdrop X12 Main Pros:
-Effective in Our Lab Testing
-Clean Water Taste & Odor
-Great Usability
-Fastest Filtration in Our Under Sink RO Test
-Quality Build
-Lowest Wastewater Ratio in Our Under Sink RO Test
-Auto-Flushing Counters TDS Creep
Waterdrop X12 Main Cons:
-Pricey
-Only 1 NSF Certification
-Auto-Flushing Wastes Water (But Can Be Turned Off)
Our website: https://www.best-osmosis-systems.com
Waterdrop has provided us their X12 reverse osmosis system for free. All opinions are still 100% our own. Some links are affiliate links. If you buy a product or service through such a link we earn a commission at no additional cost to you.
Amazon disclosure: As an Amazon Associate I earn from qualifying purchases.
Link to disclaimer policy: https://www.best-osmosis-systems.com/youtube-disclaimer-policy/
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