Clean drinking water is a priority for many households, but choosing the right reverse osmosis system can be challenging. Traditional RO systems often take up significant space under the sink, produce water slowly, and can waste a considerable amount of water during filtration.
The Waterdrop G3P800 is designed to address many of these concerns. This tankless reverse osmosis system combines a high 800 GPD capacity, 10-stage filtration, a 3:1 pure-to-drain ratio, and UV sterilization in a compact under-sink design.
But is the Waterdrop G3P800 the right choice for your home?
In this review, we'll take a closer look at its features, filtration capabilities, maintenance requirements, installation, advantages, and potential drawbacks.
Waterdrop G3P800 at a Glance
| Feature | Waterdrop G3P800 |
|---|---|
| Model | G3P800 |
| System Type | Tankless Under-Sink Reverse Osmosis System |
| Filtration | 10-Stage Filtration |
| Capacity | 800 GPD |
| Pure-to-Drain Ratio | 3:1 |
| UV Sterilization | Yes |
| Faucet | Smart Display Faucet |
| RO Membrane | 0.0001 μm |
| Dimensions | 18.11 × 5.67 × 17.73 inches |
| Weight | 32.4 lbs |
| Filter Lifespan | CF: 6 months / CB: 12 months / RO: 24 months |
| Electricity Required | Yes |
| Usage | Indoor Use Only |
| Warranty | 1 Year |
What Is the Waterdrop G3P800?
The Waterdrop G3P800 is a high-capacity, tankless reverse osmosis water filtration system designed for installation under a kitchen sink.
Unlike traditional RO systems that rely on a large storage tank, the G3P800 uses a tankless design to help save valuable cabinet space while delivering purified water on demand.
The system is designed to combine several technologies, including:
- Multi-stage filtration
- A reverse osmosis membrane
- UV sterilization
- High-flow water production
- Smart faucet monitoring
With an advertised capacity of 800 gallons per day, the G3P800 is designed for households that use a significant amount of filtered water for drinking, cooking, coffee, tea, and other everyday needs.
Key Features of the Waterdrop G3P800
1. High 800 GPD Water Production
One of the biggest advantages of the Waterdrop G3P800 is its high water production capacity.
The system is rated at 800 gallons per day (GPD), making it a high-flow option compared with many traditional residential reverse osmosis systems.
According to Waterdrop, the system can fill a 6 oz cup in approximately 5 seconds.
This can be particularly useful for households that want:
- Faster access to filtered water
- Less waiting when filling containers
- Enough capacity for multiple family members
- A convenient water source for cooking and beverages
For homes with higher daily water consumption, a high-flow RO system can offer a more convenient experience than lower-capacity alternatives.
2. Tankless Design Saves Under-Sink Space
Traditional reverse osmosis systems typically include a storage tank. While these systems can provide a reserve of filtered water, the tank can occupy a significant amount of cabinet space.
The Waterdrop G3P800 uses a tankless design, allowing the system to fit into a narrower under-sink area.
Its dimensions are approximately:
18.11 × 5.67 × 17.73 inches
The narrow design can be a major benefit for homeowners who want to keep more storage space available under the kitchen sink.
A tankless system may also be attractive to homeowners who prefer a cleaner and more modern under-sink setup.
3. 10-Stage Filtration System
The G3P800 features a 10-stage filtration system designed to reduce a broad range of contaminants and impurities.
The system uses a reverse osmosis membrane with a filtration precision listed as 0.0001 μm.
According to the product information, the system is designed to reduce specific substances that may include:
- Fluoride
- PFOA and PFOS
- TDS
- Chromium
- Chlorine
- Lead
- Heavy metals
- VOCs
- Sediment
- Rust
- Sand
- Other impurities specified in the system's performance information
It is important to note that filtration performance can depend on the quality of the incoming water and the specific contaminants present.
For the most accurate information, homeowners should always review the manufacturer's official performance data and certification details.
4. 3:1 Pure-to-Drain Ratio
Water efficiency is an important consideration when choosing a reverse osmosis system.
The Waterdrop G3P800 has an advertised 3:1 pure-to-drain ratio.
This means the system is designed to produce approximately three parts purified water for every one part of water sent to the drain under the stated operating conditions.
Reverse osmosis systems require water to flush away dissolved contaminants separated during the filtration process. As a result, some wastewater is unavoidable.
A higher pure-to-drain ratio can make a system more water-efficient than traditional RO designs with lower efficiency ratios.
For households concerned about water consumption, this is one of the G3P800's most notable features.
5. Built-In UV Sterilization
The Waterdrop G3P800 combines reverse osmosis filtration with UV sterilization.
UV technology adds another stage to the water treatment process by using ultraviolet light.
According to the product information, the UV sterilization system is designed to address bacteria and viruses, with Waterdrop advertising up to 99.9% elimination under its stated conditions.
The addition of UV technology may appeal to users who want an additional water treatment stage alongside reverse osmosis filtration.
However, UV performance can depend on system conditions and water quality, so users should refer to the manufacturer's documentation for specific performance claims.
6. Smart Display Faucet
The G3P800 includes a smart display faucet designed to provide useful system information.
The faucet can help users monitor information such as:
- Water quality indicators
- TDS levels
- Filter life
This feature can make daily use and maintenance more convenient.
Instead of relying solely on a calendar to remember when filters may need replacing, users can monitor the system's filter status directly.
For households that prefer a more modern and connected user experience, the smart faucet is a useful addition.
What Does the Waterdrop G3P800 Reduce?
The Waterdrop G3P800 is designed to reduce a variety of contaminants and impurities.
Depending on the applicable filtration and certification claims, these may include substances such as:
- Chlorine
- Lead
- Fluoride
- PFOA and PFOS
- Chromium
- Heavy metals
- Total dissolved solids (TDS)
- VOCs
- Sediment
- Rust
- Sand
- Taste and odor-related impurities
Not every water supply contains the same contaminants.
Before purchasing any water filtration system, it is a good idea to understand your local water quality. Homeowners using private wells or dealing with specific water problems may also need additional water treatment before the RO system.
Certifications
The product information lists certifications associated with the following standards:
- NSF/ANSI 42
- NSF/ANSI 53
- NSF/ANSI 58
- NSF/ANSI 372
These standards cover different aspects of water treatment systems and their performance claims.
NSF/ANSI 42
This standard generally relates to the reduction of certain aesthetic contaminants that can affect water quality characteristics such as taste or odor.
NSF/ANSI 53
This standard covers the reduction of specific contaminants that may have health-related effects, depending on the certified performance claims.
NSF/ANSI 58
NSF/ANSI 58 is a key standard associated with residential reverse osmosis water treatment systems.
NSF/ANSI 372
This standard addresses low-lead requirements for certain materials and components used in drinking water systems.
Consumers should review the official certification and performance documentation to understand exactly which contaminants are covered by the system's certified claims.
Waterdrop G3P800 Installation
The G3P800 is designed for under-sink installation.
The product is marketed as a system that can be installed by homeowners, but the actual installation process depends on the existing plumbing configuration.
Installation generally involves connections for:
- Cold water supply
- RO faucet
- Drain line
- Water tubing
- Electrical power
Because the G3P800 includes electronic components and UV sterilization, electricity is required.
The manufacturer states that the system can be installed in approximately 30 minutes under suitable conditions.
However, installation time may vary.
Homeowners who are comfortable with basic plumbing connections may be able to complete the installation themselves. Others may prefer professional assistance, especially if modifications to existing plumbing are required.
Filter Replacement and Maintenance
Like all reverse osmosis systems, the Waterdrop G3P800 requires regular filter replacement to maintain performance.
The listed replacement intervals are:
| Filter | Estimated Replacement Interval |
|---|---|
| CF Filter | Approximately 6 months |
| CB Filter | Approximately 12 months |
| G3P800 RO Filter | Approximately 24 months |
Actual filter lifespan can vary depending on:
- Incoming water quality
- Household water consumption
- Levels of sediment and contaminants
- Local water conditions
The smart faucet's filter monitoring features can help users keep track of maintenance needs.
When evaluating the overall cost of an RO system, buyers should consider both the initial purchase price and the ongoing cost of replacement filters.
Waterdrop G3P800 Pros and Cons
Pros
High 800 GPD Capacity
The high flow rate is one of the system's biggest advantages and can provide faster access to purified water.
Space-Saving Tankless Design
The system does not rely on a traditional storage tank, helping free up under-sink space.
3:1 Pure-to-Drain Ratio
The system is designed for improved water efficiency compared with many conventional RO systems.
10-Stage Filtration
The multi-stage system is designed to reduce a broad range of contaminants and impurities.
UV Sterilization
The addition of UV technology provides another stage in the overall water treatment process.
Smart Display Faucet
Users can monitor important information such as TDS and filter life.
Cons
Premium Initial Price
The G3P800 is positioned as a premium reverse osmosis system, so the upfront investment may be higher than basic water filters or lower-capacity RO systems.
Requires Electricity
The system requires access to electrical power.
Installation Is More Involved Than Simple Water Filters
While designed for DIY installation, an under-sink RO system still requires plumbing and drain connections.
Ongoing Filter Costs
Replacement filters are an additional long-term expense that buyers should consider.
Standard Model Does Not Include Built-In Alkaline Mineralization
Users specifically looking for a system that adds minerals back into filtered water may want to explore compatible options or alternative models.
One-Year Warranty
Some premium water filtration systems offer longer warranty periods.
Waterdrop G3P800 vs. G3P600
The G3P800 and G3P600 share several similarities, including their tankless design and under-sink installation.
However, there are important differences.
| Feature | G3P800 | G3P600 |
|---|---|---|
| Capacity | 800 GPD | 600 GPD |
| Filtration | 10-Stage | 8-Stage |
| Pure-to-Drain Ratio | 3:1 | 2:1 |
| Smart Faucet | Yes | Yes |
| RO Filter Lifespan | Up to 24 Months | Up to 24 Months |
| Warranty | 1 Year | 1 Year |
The G3P600 may be a better option for buyers looking for a lower-capacity system at a more accessible price point.
The G3P800 may be a better fit for households that prioritize:
- Higher water production
- Faster flow
- Additional filtration stages
- Better pure-to-drain efficiency
Who Should Buy the Waterdrop G3P800?
The Waterdrop G3P800 may be a good option for:
Large Households
Families with multiple people may benefit from the system's high water production capacity.
Homes With High Filtered Water Consumption
The system may be useful for households that regularly use filtered water for:
- Drinking
- Cooking
- Coffee
- Tea
- Ice
- Filling reusable water bottles
Homeowners With Limited Under-Sink Space
The tankless design can help preserve valuable cabinet space.
Users Who Want High Water Flow
The 800 GPD capacity is designed to provide water more quickly than many lower-capacity RO systems.
Buyers Looking for Smart Monitoring
The smart display faucet provides a convenient way to monitor system and filter information.
Who May Want to Consider Another System?
The G3P800 may not be the best choice for everyone.
You may want to consider another option if:
- You have a limited budget
- You only need a basic water filter
- You rent your home and cannot modify plumbing
- You do not have convenient electrical access under the sink
- You specifically want built-in alkaline remineralization
- You have unusual water conditions that require specialized pre-treatment
Choosing the right water filtration system depends on your water quality, household size, available space, and budget.
Is the Waterdrop G3P800 Worth It?
The Waterdrop G3P800 is a feature-rich option in the premium tankless reverse osmosis category.
Its strongest selling points are its combination of:
- 800 GPD high-flow capacity
- Tankless design
- 10-stage filtration
- 3:1 pure-to-drain ratio
- UV sterilization
- Smart display faucet
For households that use a large amount of filtered water and want faster access to purified water, the G3P800 can be an attractive option.
The premium price may not make sense for every household, especially for users with low daily water consumption.
However, for buyers looking for a high-capacity under-sink RO system with modern features and space-saving design, the Waterdrop G3P800 offers a strong combination of performance and convenience.
Frequently Asked Questions
How much water can the Waterdrop G3P800 produce?
The Waterdrop G3P800 is rated at 800 gallons per day (GPD) under the manufacturer's stated conditions.
Does the Waterdrop G3P800 require electricity?
Yes. The system requires electricity to operate its electronic components and UV sterilization features.
Does the Waterdrop G3P800 have a storage tank?
No. The G3P800 uses a tankless design, which helps save space under the kitchen sink.
What is the Waterdrop G3P800 pure-to-drain ratio?
The system has an advertised 3:1 pure-to-drain ratio.
Does the Waterdrop G3P800 have UV sterilization?
Yes. The G3P800 includes a UV sterilization component as part of its overall water treatment system.
How often do the filters need to be replaced?
The listed replacement intervals are approximately:
- CF filter: 6 months
- CB filter: 12 months
- RO filter: 24 months
Actual replacement schedules may vary depending on water quality and usage.
Is the Waterdrop G3P800 difficult to install?
The system is designed for DIY installation, but it requires plumbing, drain, faucet, tubing, and electrical connections. Installation difficulty can vary depending on your existing setup.
Does the G3P800 add minerals back into the water?
The standard G3P800 configuration does not list built-in alkaline mineralization. Buyers looking for remineralization should check compatible options or alternative systems.
Final Verdict
The Waterdrop G3P800 is designed for homeowners who want more than a basic water filter.
Its high 800 GPD capacity, efficient 3:1 pure-to-drain ratio, tankless design, 10-stage filtration, and UV sterilization make it a compelling option for households with higher filtered water demands.
It is not the cheapest RO system on the market, and buyers should factor replacement filters and installation requirements into the overall cost.
However, if your priorities are high water flow, space-saving design, advanced filtration, and convenient smart monitoring, the Waterdrop G3P800 is certainly a system worth considering.
Looking for a high-capacity tankless RO system?
If the Waterdrop G3P800 sounds like the right fit for your home, you can check the latest availability, pricing, and current offers directly from Waterdrop Canada.
