1 / 7Waterdrop M6HG WD-M6HG Countertop Hot RO Water Filter
The Waterdrop M6HG WD-M6HG is a corded countertop reverse-osmosis filter with mineral addition, selectable hot-water temperatures and a glass pitcher. Its no-plumbing design suits kitchens or apartments, while its listed tank capacity and reported leakage concerns are worth considering before purchase.
At a glance
- The listing describes eight-stage reverse-osmosis filtration and mineral addition.
- Five stated temperature choices range from room temperature to 203°F.
- The 185 oz tank is divided between 135 oz of tap water and 50 oz of wastewater.
- A detachable 40 oz glass pitcher and no-installation design are described.
Reference price: $429.00
Price checked: Nov 14, 2026
View offerAhead of Black FridayExplore the selectionPros and cons
Pros
- Countertop operation avoids plumbing installation, according to the listing.
- Temperature presets and five dispensing-volume options allow different serving sizes.
- The feed-water and wastewater tanks are described as separate, and wastewater may be reused for household tasks.
Cons
- The listed 185 oz total tank includes wastewater capacity, not just filtered-water capacity, so usable feed-water volume is 135 oz.
- The unit requires a corded power connection and countertop space.
Technical specifications
12 specifications| Brand | Waterdrop |
|---|---|
| Model | WD-M6HG |
| Purification method | Reverse Osmosis |
|---|---|
| Pure-to-drain ratio | 3:1 Pure to Drain |
| Water temperatures | room-temp for daily drinking, 113°F for baby formula, 149°F for tea, 185°F for coffee, and 203°F for oatmeal |
| Upper temperature rating | 203 °F |
| Filter life cycle | 12 months |
| Power configuration | Corded Electric |
|---|---|
| Material listed | RO Membrane, Carbon Block, PP Cotton |
| Installation type | Countertop |
|---|---|
| Dimensions listed | 15.9"L x 9.3"W x 14.5"H |
| Capacity | 4 liters |
What to know before buying
- The listing describes a 3:1 pure-to-drain ratio and separate 135 oz feed-water and 50 oz wastewater compartments. Follow its instruction to keep the pitcher on the unit during flushing. The 4 liters capacity entry does not explain what volume it measures, so confirm the capacity definition if it matters.
What’s in the box
Included- M6HG RO System with 1 pre-installed filter
- User manual
Who is it for?
A good fit for
- Apartment or kitchen users seeking a countertop RO system without plumbing installation.
- Buyers who want mineral addition and hot-water temperature presets for drinks or cooking.
- Households that can accommodate the unit's listed dimensions and manage its feed-water and wastewater tanks.
Less suited to
- People who need a high-capacity supply of filtered water without frequent refilling.
- Buyers who cannot place a corded appliance on the counter or want an under-sink installation.
Customer reviews on Amazon
- 5 stars
62% 62% - 4 stars
14% 14% - 3 stars
11% 11% - 2 stars
5% 5% - 1 star
8% 8%
Customer feedback highlights perceived quality, taste, functionality, ease of use and temperature options. Some customers also criticize the water capacity as small and report leakage. Those concerns matter for a countertop unit with a listed 135 oz feed-water tank, especially for heavier household use. The aggregate ratings are favorable overall but include a meaningful spread of lower ratings, and they do not establish why any individual customer rated it as they did.
Positive themes
- Customers report favorable impressions of quality, taste, functionality, ease of use and hot-water options.
Negative themes
- Customers criticize the water capacity, and some report leakage.
Frequently asked questions
Does the Waterdrop M6HG need plumbing installation?
The listing describes a countertop design that requires no installation. It does require a corded power connection and filling the feed-water tank.
What hot-water temperatures are listed?
The listing gives five choices: room temperature, 113°F, 149°F, 185°F and 203°F.
How much water does its tank hold?
The listed tank capacity is 185 oz total, split into 135 oz for tap water and 50 oz for wastewater. The listing also gives a separate 4 liters capacity without specifying what it measures.
What should I know about flushing?
The listing instructs users not to remove the pitcher during flushing and to keep the pure-water pitcher on the unit.
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