Waterdrop G3P800 Reverse Osmosis System review
By Daryna Klochko · Published · Specs checked Oct 13, 2026 · 
Scores 9.75/10, tied for 1st of the 20 RO systems we track. At $999 it costs 2.2 times the category median of $459.99. IAPMO lists it for Lead, PFOA/PFOS, TDS, Fluoride, one of 12 RO systems out of 20 with a certifier listing for a health claim. Waterdrop also claims Chlorine, which is not in the listing.
- Price
- $999
- Certified for
- Lead · PFAS · Fluoride +1
- Flow
- 0.5 gpm
- Cartridge life
- 550 gal claimed
- Cost per year
- $160
- Warranty
- 1 year
Certification
Listed by IAPMO under NSF/ANSI 53 · 58 for Lead, PFOA/PFOS, TDS, Fluoride, checked Oct 13, 2026. Waterdrop also claims 1 more substance that is not in the listing. Search the IAPMO listings
- Lead
- PFOA/PFOS
- TDS
- Fluoride
Waterdrop also claims Chlorine: brand claims, not in a certifier listing.
The contaminants or other substances removed or reduced by this water treatment device are not necessarily in your water. Listing checked on Oct 13, 2026. What a listing means and what it doesn't
Specs and sources
Checked Oct 13, 2026 · source under each valueFiltration
Cartridges and install
Buying
Warranty, returns and shipping
Warranty: 1 year. Returns: 30 days. Shipping: not stated by the brand. Source: waterdropfilter.com, checked Oct 13, 2026.
Source: waterdropfilter.com, checked Oct 13, 2026.
Compared with similar RO systems
All 20 RO systems →| Model | Price | Certified for | Cost per year | Warranty | Score | Where to buy |
|---|---|---|---|---|---|---|
| Pentair FreshPoint GRO-575 5-Stage Reverse Osmosis | $669.29 | Lead · Cysts +14 | $238 | 1 year | 9.25/10 | Check price → |
| Waterdrop G3P800 Reverse Osmosis SystemTHIS MODEL | $999 | Lead · PFAS +2 | $160 | 1 year | 9.75/10 | Check price → |
| Coway All-In-One Under Sink RO (P-160AL) | $1,099 | Lead · Cysts +5 | $433 | 1 year | 8.75/10 | See specs → |
| Coway Under Sink RO (P-09CL) | $1,199 | Lead · Cysts +4 | $372 | 1 year | 8.75/10 | See specs → |
| Waterdrop X12 Reverse Osmosis System | $1,299 | TDS | $175 | 2 years | 9.5/10 | Check price → |