1 / 7DREO WF511 Countertop Reverse Osmosis Water Filter
The DREO WF511 countertop reverse osmosis water filter is a corded, no-plumbing purifier with a built-in TDS meter and two pitcher containers. Its listed 5-liter capacity and compact countertop format suit buyers seeking a portable setup, though the listing says to use municipal tap water only.
At a glance
- The listing describes a seven-stage filtration system using reverse osmosis and activated carbon, and claims 99.99% contaminant removal based on SGS testing.
- No plumbing is required according to the listing. Setup instructions say to plug in the unit and flush two full tanks before drinking the water.
- Two pitchers are claimed, with the second described as auto-refilling while the unit operates.
- A built-in TDS meter and filter-change indicator provide readings and replacement reminders, according to the product information.
- The claimed pure-to-drain ratio is 3:1. The listing also says to discard concentrate water after filtration rather than reuse it.
Reference price: $299.99
Price checked: Nov 14, 2026
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Pros and cons
Pros
- Countertop, installation-free design avoids plumbing connections and permanent installation.
- The listed built-in TDS meter and filter-change indicator make water readings and filter reminders available on the unit.
- Two pitchers are listed, offering more than one vessel for holding filtered water.
Cons
- Corded operation requires access to an electrical outlet.
- The listing restricts use to municipal tap water and says not to use well, hot or untreated water.
Technical specifications
11 specifications| Brand | DREO |
|---|---|
| Model | DR-KWF001 Ivory |
| Purification method | Activated Carbon, Reverse Osmosis |
|---|---|
| Listed features | Built In TDS Meter, Change Filter Indicator, Child Lock, Portable, Reduce TDS |
| Maximum supported water TDS level | 1000 |
| Capacity | 5 liters |
| Power configuration | Corded Electric |
| Installation type | Countertop |
|---|---|
| Dimensions listed | 15.91"L x 9.06"W x 13.07"H |
| Weight listed | 14.6 pounds |
| Material listed | Acrylonitrile Butadiene Styrene |
|---|
What to know before buying
- The listing says to flush and discard two full tanks before first use, and to discard leftover concentrate water after filtration. It specifies municipal tap water only, not well, hot or untreated water. Its 3:1 pure-to-drain ratio and claimed contaminant-removal performance are manufacturer claims, not independently established here.
What’s in the box
Included- Water filter body
- RO filters
- PPC filter
- PCF filter
- 2 water pitchers
Who is it for?
A good fit for
- Households or small workspaces wanting a countertop RO filter without plumbing installation.
- Buyers who want an onboard TDS reading and filter-change reminder.
- People who can use municipal tap water and have room for a corded countertop appliance.
Less suited to
- People needing filtration for well water, hot water or other untreated sources.
- Buyers seeking an under-sink or non-electric system.
- Anyone who needs independently verified contaminant-removal performance rather than manufacturer claims.
Customer reviews on Amazon
- 5 stars
66% 66% - 4 stars
10% 10% - 3 stars
5% 5% - 2 stars
5% 5% - 1 star
14% 14%
Customer feedback reports effective filtration, pleasant-tasting water and an attractive appearance. Experiences are mixed on reliability, size, refill time and value, with some reporting that the unit stops working, finding it small or slow, or considering it expensive. For buyers weighing this against the listed 5-liter capacity and countertop design, the reports suggest that fit and pace may depend on expectations, while reliability remains a concern in the feedback. Ratings skew positive overall but include a notable one-star share, so they do not establish consistent performance for every buyer.
Positive themes
- Customers report effective filtration and good-tasting water.
- Some customers appreciate the appearance.
Negative themes
- Some customer feedback reports leakage.
Mixed feedback
- Feedback is mixed on reliability, including reports that the filter works well and reports that it stops working.
- Opinions vary on the unit's size, refill time and value for money.
Frequently asked questions
Does the DREO WF511 need plumbing installation?
The listing describes it as a countertop system that requires no plumbing. It is corded electric, so it still needs an outlet.
What water can this filter use?
The product information says it is designed for municipal tap water and warns against using well water, hot water or untreated water sources.
What should I do before drinking the filtered water?
The instructions say to filter and discard two full tanks before first use, then drink from the third tank onward.
Can I reuse the leftover water after filtration?
No. The listing describes the remaining water as RO concentrate and says to discard it after each use.
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