Waterdrop G5P500A
#1 in TanklessFull review
For a buyer on a budget who still wants certified RO water with minerals added back.
Amazon $229.99$229.99
3.7/5
For a household that wants a broadly certified tankless system with low running costs and a long warranty. Budget buyers can get similar output for less.
- 600 gallons a dayOutput
- 2:1Pure to drain
- $201 a yearFilters
- YesNSF/ANSI 58
Check price at Amazon$799
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Certified to NSF/ANSI 58 and five other standards
- Filters last two years and cost about $200 a year
- Only one gallon to drain for every two made
- Five year warranty on the system
Cons
- Costs about $800
- Remineralization costs extra
- Needs an outlet under the sink
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Specifications
| Model number | DWQ1001012 |
|---|---|
| Filtration | |
| Output | 600 gallons a day |
| Pure to drain | 2:1 |
| Stages | 6 |
| Remineralization | No |
| NSF/ANSI 58 | Yes |
| Other certifications | NSF/ANSI 42, 53, 244, 372, 401 |
| Replacement filters | $201 a year |
| Build | |
| Tank | Tankless |
| Warranty | 5 years |
| Released | 2024 |
Alternatives in this type
Waterdrop G5P700A
#2 in TanklessFull review
For a buyer who wants certified RO with mineralized water and a smart faucet for around $300.
Amazon $309.99$309.99
Waterdrop G3P600
#4 in TanklessFull review
For a household that wants a certified tankless RO system with a smart faucet at a mid-range price. Its NSF 58 listing is the main reason to pick it over cheaper tankless units.
Amazon $439$439
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