This bundle brings together the Waterdrop G3 Reverse Osmosis System and essential tools for a smooth DIY installation. It is designed for homeowners looking to install a high-efficiency water filtration system under their sink. The included products collectively help in setting up an RO system efficiently and without professional help.
Curated by Workshop Notes · Updated June 2026
Built for homeowners comfortable with a wrench who want to bypass permanent plumbing modifications. Not for people looking for high-volume whole-house systems—this shop focuses strictly on independent under-sink point-of-use units.
Curator's pick: Waterdrop G3 Reverse Osmosis System
The tankless design is a win for serviceability because it eliminates the bacteria-prone pressure vessel and saves half your cabinet space. Just watch the power requirement; you need a dedicated outlet under the sink that most older kitchens don't have.
⚠ Worth knowing: These quick-connect fittings are convenient but unforgiving if your poly-tubing cuts aren't perfectly square. If you don't use a proper tube cutter, you’ll likely deal with a slow drip that can rot your cabinet floor over time.
Main Line Pressure Regulators and GaugesCountertop Gravity Fed Filtration SystemsCabinet Water Damage Mitigation and Sensors
This shop is built around the Waterdrop G3 Reverse Osmosis System and provides all the necessary tools for a successful DIY installation. It focuses on empowering homeowners to take control of their water filtration setup without the need for professional plumbing services.
This bundle is ideal for the handy homeowner who desires high-quality, purified drinking water and wants to save money on installation costs. It's specifically tailored for under-sink installation in kitchens or utility rooms.
To get started, prioritize the Waterdrop G3 system, a basin wrench, and plumbers tape. A full build, including all tools for a seamless installation, will range from $502 to $805.
Full build
$502–$805
Starter
$427–$655
RO System + Basin Wrench + Plumbers Tape
Best forDIY EnthusiastsHomeownersUnder-Sink InstallationWater Quality ImprovementCost Savings
The Waterdrop G3 Reverse Osmosis System is a tankless, 3-stage filtration unit designed for under-sink installation. It provides purified drinking water and replaces traditional bulky RO systems, suitable for households seeking efficient water purification.
Tankless design, saves space
3-stage deep filtration
Fast water flow (400 GPD)
Smart faucet with TDS monitoring
Easy filter replacement
In this shop: The Waterdrop G3 Reverse Osmosis System is the core of this bundle, aligning with the "Waterdrop Under Sink Reverse Osmosis System G3" vibe by offering advanced, user-friendly water purification.
This replacement cartridge is designed for the Waterdrop G3 Reverse Osmosis System, ensuring continued high-quality water filtration. It is for existing users of the G3 system who need to maintain its purification performance by replacing old filters.
Specifically for Waterdrop G3 system
Multi-stage filtration media
Up to 12-month lifespan
Twist-and-pull installation
NSF certified materials
In this shop: An essential accessory, the Under Sink Water Filter Replacement Cartridge directly supports the longevity and effectiveness of the Waterdrop G3 system, fitting the maintenance aspect of the vibe.
The Basin Wrench Telescoping Long Reach is a specialized tool used for tightening or loosening nuts in hard-to-reach areas, particularly behind sinks. It is for DIY plumbers and homeowners to manage plumbing connections in confined under-sink spaces.
Telescoping shaft for reach
Swivel jaw for angles
1/2-inch to 1-1/4-inch capacity
Steel construction for durability
Ergonomic handle grip
In this shop: This Basin Wrench is crucial for the "DIY Installation" theme, as it directly addresses the challenge of fitting the Waterdrop G3 system in cramped under-sink environments.
Plumbers Tape PTFE Pipe Thread Sealant is a thin, white tape used to seal pipe threads, preventing leaks in plumbing connections. It is for anyone working with threaded pipes to ensure a watertight seal.
PTFE material
1/2 inch x 520 inches
Non-stick, easy to apply
Withstands wide temperature range
Prevents galling and seizing
In this shop: Plumbers Tape is a fundamental item for securing leak-free connections during the installation of any under-sink system, perfectly suiting the practical "DIY Installation" aspect of the vibe.
The Quick Connect Push to Connect Tube Cutter is designed for making clean, precise cuts on plastic tubing, commonly used in water filtration systems. It is for installers who need to trim poly tubing accurately for secure push-to-connect fittings.
Clean, burr-free cuts
For 1/4" to 1" tubing
Spring-loaded return
Durable ABS plastic body
Safe cutting mechanism
In this shop: This Quick Connect Tube Cutter facilitates precise preparation of tubing for the Waterdrop G3 system, emphasizing the ease and precision of the "DIY Installation" experience.
The Adjustable Pipe Wrench 10 Inch is a versatile hand tool with an adjustable jaw for gripping and turning various sizes of pipes and fittings. It is for general plumbing tasks, offering strong leverage for tightening or loosening connections under the sink.
10-inch length for leverage
Adjustable jaw capacity
Drop forged steel construction
Hardened teeth for grip
Heavy-duty utility
In this shop: The Adjustable Pipe Wrench is a general-purpose yet essential tool for securing the Waterdrop G3 system's plumbing, aligning with the practical needs of a "DIY Installation".
This bundle provides all the necessary components for a confident DIY installation, eliminating the need for professional help.
The comprehensive toolset ensures clean cuts, secure connections, and access to tight spaces for a leak-free setup.
Achieve significant savings by installing a high-quality reverse osmosis system yourself rather than hiring a plumber.
What to know
While designed for DIY, the installation still requires some mechanical aptitude and adherence to instructions to ensure proper function.
The initial cost of all the tools and the RO system might be higher than simply purchasing the system alone, but it offers long-term savings on installation.
How to use this together
1
Prepare Your Workspace
Before starting, ensure you have clearance under your sink and can access all necessary pipes. Turn off your main water supply to prevent spills. Read the Waterdrop G3 Reverse Osmosis System manual thoroughly before beginning installation.
2
Cut and Connect Tubing
Use the Quick Connect Push to Connect Tube Cutter to make precise, clean cuts on the plastic tubing for the Waterdrop G3 System. Clean cuts are crucial for preventing leaks at the quick-connect fittings, ensuring a secure and reliable connection.
3
Secure Pipe Connections
Apply Plumbers Tape PTFE Pipe Thread Sealant to all threaded pipe connections before tightening them. This step is critical for creating a watertight seal and preventing leaks. Use the Adjustable Pipe Wrench for general tightening and the Basin Wrench Telescoping Long Reach for fittings in awkward, hard-to-reach areas behind the sink.
