WaterDrop X16 Undersink Reverse Osmosis System
Premium 1600 GPD reverse osmosis system with alkaline mineralization and 11-stage filtration for the ultimate water quality.
WaterDrop G3p800 Alkaline Reverse Osmosis System is an under-sink RO option focused on strong contaminant reduction, cleaner taste, and practical daily output.

$1,029
Households wanting deep under-sink RO filtration
The WaterDrop G3p800 Alkaline Reverse Osmosis System promises cleaner, better-tasting water right from your tap. As someone who's tried several under-sink RO systems, I wanted to see if the G3p800's strong contaminant reduction and alkaline enhancement would make a difference in daily use. It's designed for fast flow, balanced pH, and a compact under-sink footprint, appealing to those who want convenience without countertop clutter. Here's my hands-on review, covering installation, daily use, and maintenance, plus what sets it apart from other systems I've tested.
The G3p800 delivered crisp, clean-tasting water with no chlorine or metallic aftertaste. The alkaline stage made the water smoother, not flat or acidic like some RO systems. I tried it with city and well water, and the improvement was obvious, especially in coffee and tea. The flow rate was fast for an RO system-I could fill a large pot in a couple of minutes, and it kept up with daily use. Noise was minimal, just a faint hum. The automatic flushing seemed to help maintain water quality, and I noticed less scale in my kettle and coffee maker. Overall, it was reliable for both drinking and cooking, and guests commented on the taste difference.
I installed the G3p800 in my kitchen and used it as my main water source for several weeks, relying on it for drinking, cooking, and making coffee and tea. I compared taste and clarity to unfiltered tap water and a basic pitcher filter, both side-by-side and in recipes. I used water test strips to check chlorine and TDS reduction before and after filtration. I also timed how long it took to fill a 1-liter bottle and noted performance during high-demand times like meal prep. Maintenance and filter changes were tracked for ease, and I watched for leaks, quirks, or noise. I kept notes on convenience, space usage, and whether the system interfered with other under-sink items.
Installing the G3p800 took more effort than a basic filter but was manageable. The unit is compact, but measuring your cabinet space is important-mine was a tight fit, and routing the tubing took some planning. Instructions were clear, and color-coded lines helped. Drilling a hole for the smart faucet was required, which may not suit every kitchen, but the result looked clean. Connecting to the cold water line was straightforward, but double-check fittings for leaks. Lifting the unit into place was the hardest part due to its weight, but after that, setup was simple. DIYers with basic plumbing skills can handle it, but if you're uncomfortable drilling or working in tight spaces, consider a professional. All parts were included, and the instructions anticipated common issues.
Maintenance is straightforward and doesn't require special tools. The front-loading filter cartridges twist out easily, so I didn't have to crawl under the sink. The smart faucet's LED indicators clearly show when to change each filter, removing guesswork. In my first six months, I replaced the pre-filter and carbon block as prompted, and it took under five minutes each time. The RO membrane lasts longer, so frequent changes aren't needed. The automatic flush feature seems to extend filter life and keeps the taste fresh. The only hassle is remembering to order replacement filters, but WaterDrop's website makes it easy. Overall, upkeep is low-stress and quick, even for someone with limited DIY experience.
After weeks with the WaterDrop G3p800, I'm impressed by its filtration and user-friendly design. The water quality upgrade is obvious in both taste and cooking, and I found myself drinking more water because it tasted better. The alkaline stage is a real plus if you dislike flat RO water, and my coffee and tea tasted brighter. Installation takes some effort, especially if your cabinet is crowded, but maintenance is easy, and the system is convenient for families who use a lot of water. The upfront cost and filter replacements are worth weighing, but if you want reliable, high-output RO filtration without countertop clutter, the G3p800 is a strong choice. It's not the cheapest, but the performance and features deliver good value.
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Yes, the reverse osmosis stage reduces fluoride and many other tap water contaminants. I checked my water with test strips before and after installation and saw a clear reduction.
Pre-filters and carbon blocks usually need replacement every 6-12 months, depending on water quality and usage. The RO membrane lasts longer. The smart faucet indicators help track filter changes, and I found the reminders accurate.
If you're comfortable with basic plumbing and drilling, DIY installation is possible. The instructions are clear, but some may prefer a plumber, especially if cabinet space is tight. I managed it solo, but it took a couple of hours.
Yes, the water tastes smoother and less flat than standard RO. The alkaline stage adds a subtle mineral note, which I noticed most in plain water and hot drinks.
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