Waterdrop Products Ranked

Last updated: November 2, 2026

8 Waterdrop products ranked. Each one is scored and ranked against every brand in its type, so "#3 mid-size" means third of all mid-size RO systems here, not third among Waterdrop's own.

Waterdrop makes 6 current RO systems: 6 tankless. Prices run from $229.99 for the Waterdrop G5P500A to $1,099 for the Waterdrop X12. Its best-rated model: the Waterdrop G5P500A (#1 of 15 tankless, rated 3.8).

Waterdrop makes 2 current whole-house filters: 2 cartridge. Prices run from $106.98 for the Waterdrop WHF21-PG to $269.99 for the Waterdrop WHF3T-PG. Its best-rated model: the Waterdrop WHF21-PG (#1 of 13 cartridge, rated 3.4).

Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Waterdrop RO systems 6

  1. Waterdrop G5P500A
    #1 tankless3.8Full review

    For a buyer on a budget who still wants certified RO water with minerals added back.

    Amazon $229.99
    $229.99
    500 gpd2:1$125 a year
  2. Waterdrop G5P700A
    #2 tankless3.8Full review

    For a buyer who wants certified RO with mineralized water and a smart faucet for around $300.

    Amazon $309.99
    $309.99
    700 gpd2:1$130 a year
  3. Waterdrop G3P600
    #4 tankless3.6Full 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
    600 gpd2:1$145 a year
  4. Waterdrop X12
    #5 tankless3.5Full review

    For a large household that wants the fastest flow and lowest waste, and will pay a premium for it.

    Amazon $1,099
    $1,099
    1,200 gpd3:1$173 a year
  5. Waterdrop G3P800
    #6 tankless3.4Full review

    For a busy kitchen that wants fast RO water and low waste from a certified system, and can pay for it.

    Amazon $849
    $849
    800 gpd3:1$160 a year
  6. Waterdrop G2P600
    #7 tankless3.4Full review

    For a buyer who wants tankless RO at a low price and low running cost and can do without third-party performance certification.

    Amazon $299
    $299
    600 gpd2:1$80 a year

Every under-sink reverse osmosis system ranked

Waterdrop whole-house filters 2

  1. Waterdrop WHF21-PG
    #1 cartridge3.4Full review

    A low cost starter system for chlorinated city water in a small home.

    Amazon $106.98
    $106.98
    -15 gpm-
  2. Waterdrop WHF3T-PG
    #3 cartridge3.2Full review

    A lower priced three stage big blue system for city water. Running cost is hard to judge without a gallon rating.

    Amazon $269.99
    $269.99
    -15 gpm-

Every whole-house water filter ranked