Buy Waterdrop reverse osmosis systems directly from an authorized partner and get certified installation included. From countertop units to whole-home filtration — we sell, deliver, and install every Waterdrop product across California.
Everything you need for clean, filtered water
Full installation of undersink reverse osmosis system including faucet, water line, and drain connection.
Unbox, assemble, and configure your countertop RO system with water quality testing.
Connect your RO system to the cold water supply with proper fittings and shut-off valve.
We come to your home, replace all filters, flush the system, and test water quality.
Complete whole-house water filtration system installation with bypass valve and pre-filters.
TDS testing, contaminant analysis, and personalized system recommendation for your home.
From box to clean water in under 2 hours
Test your water, evaluate under-sink space, and plan the optimal installation approach.
Mount the system, connect water lines, install the dedicated faucet, and route the drain.
Run initial flush cycles, test water quality with TDS meter, and check all connections for leaks.
Show you how to use the system, when to replace filters, and set up maintenance reminders.
Buy from California's authorized Waterdrop partner — full manufacturer warranty + certified installation by professional technicians
Waterdrop's flagship undersink reverse osmosis systems. Multi-stage filtration, NSF certified, smart monitoring, and tankless design. Our #1 sellers.
| Undersink RO System | GPD | Unit Price | Unit + Install |
|---|---|---|---|
| G3P800 800GPD RO System Flagship, smart faucet, UV sterilizer | 800 | $999 | $1,199 – $1,399 |
| G3P600 600GPD RO System High flow, smart monitoring | 600 | $539 | $739 – $939 |
| D6 600GPD RO System Compact design, 7-stage filtration | 600 | $399 | $599 – $799 |
| G2P600 RO System 600GPD, tankless, composite filter | 600 | $359 | $559 – $759 |
| G2 RO System Classic undersink, 7-stage | 400 | $299 | $499 – $699 |
| T3-C 450GPD RO System Budget-friendly, twist-and-lock filters | 450 | $279 | $479 – $679 |
The ultimate in water filtration. Advanced multi-stage RO with smart display, instant hot water, and premium build quality. Designed for those who want the absolute best.
| X Series System | Unit Price | Unit + Install |
|---|---|---|
| X16 Undersink RO Top-of-line, 1600GPD, smart display | $1,999 | $2,199 – $2,499 |
| X12 RO System 1200GPD, UV sterilization, smart | $1,299 | $1,499 – $1,799 |
| X8 RO System 800GPD, advanced filtration | $799 | $999 – $1,199 |
| X8-PRO Dual Flow Dual flow output, hot & cold | $899 | $1,099 – $1,299 |
Perfect for renters or anyone who doesn't want undersink plumbing. Plug in, fill the tank, and enjoy purified water. Many models include instant hot water dispensing.
| Countertop System | Unit Price | Unit + Setup |
|---|---|---|
| K6 Instant Hot Water RO Dispenser Instant hot/cold, 4 temps, large tank | $799 | $899 – $999 |
| A2 Hot/Cold Water Dispenser Hot & cold dispensing, RO filtration | $499 | $599 – $699 |
| M1 Instant Hot RO Dispenser Compact, instant hot water, 3 temps | $379 | $479 – $579 |
| K19 Countertop RO Portable, no install needed | $309 | $409 – $509 |
| C1H Instant Hot Water RO CoreRO with instant hot water | $299 | $399 – $499 |
| C1S Countertop CoreRO Ultra-compact, budget countertop RO | $249 | $349 – $449 |
Great filtration at an affordable price. Perfect for first-time RO buyers who want clean water without breaking the bank.
| Budget System | Unit Price | Unit + Install |
|---|---|---|
| G5P700 RO Filter 700GPD, 7-stage filtration | $349 | $549 – $749 |
| T3-M Remineralization RO Adds healthy minerals back | $279 | $479 – $679 |
| G5P500 RO Filter 500GPD, compact undersink | $249 | $449 – $649 |
Prices include product + professional installation + plumbing connections. Free delivery in our service area.
Your authorized Waterdrop partner in California
Listed on Waterdrop's official installer directory. Full manufacturer warranty honored on every system.
Product + professional installation by certified technicians. One price, no surprises.
We deliver the system to your door and handle everything from unboxing to final testing.
All water line connections, faucet installation, and drain routing included in every install.
We come back on schedule to replace your filters and test water quality. Never worry about maintenance.
We test your water before and after installation to guarantee your system is performing at peak filtration.
Waterdrop reverse osmosis systems use multi-stage filtration to remove up to 99.9% of contaminants from your tap water, including lead, chlorine, fluoride, arsenic, PFAS, and hundreds of other harmful substances. Every Waterdrop system is NSF 42, 53, and 58 certified, ensuring it meets the highest standards for water filtration. Unlike basic pitcher filters that only reduce chlorine taste, a Waterdrop RO system delivers truly purified water with TDS reduction of 90% or more — giving you bottled-water quality straight from your tap.
Undersink RO systems like the G3P800 and X16 are permanently installed under your kitchen sink. They offer higher flow rates (up to 800-1600 GPD), a cleaner countertop look with a dedicated faucet, and are ideal for homeowners who want a long-term filtration solution. Installation requires connecting to your cold water line and drilling a hole for the faucet. Countertop systems like the K6 and M1 require no plumbing at all — just plug them in, fill the tank, and pour. They're perfect for renters, small kitchens, or anyone who wants instant hot water dispensing. Many countertop models offer multiple temperature settings for tea, coffee, and baby formula.
Compared to Aquasana, iSpring, and APEC, Waterdrop stands out with its modern tankless design, smart monitoring features, and significantly longer filter life. Where competitors use bulky tanks that take up half your under-sink cabinet, Waterdrop's tankless systems are compact and deliver fresh-filtered water on demand. The smart faucet displays (on models like the G3P800) show real-time TDS levels and filter life — features that competitors simply don't offer. Plus, Waterdrop's twist-and-lock filter replacement system makes maintenance a 30-second job anyone can do.
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