Waterdrop TST-B 0.01μm Under Sink Review (2026): A Spec-Based Look
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
This waterdrop tst b 0 01mm under sink review looks at the Waterdrop TST-B system. It uses ultrafiltration to remove particles larger than 0.01 microns. The unit is designed for municipal cold water only and does not reduce TDS. It features a dedicated lead-free faucet and connects to standard 3/8 or 1/2 inch pipes. The system includes three filter stages with varying lifespans. You get a flow rate of up to 1.59 GPM. The unit measures 14.5 inches in height and weighs 13 pounds. This guide explains what these specifications mean for your daily use.
What stands out
- 0.01 micron ultrafiltration membrane removes impurities larger than this threshold
- Flow rate of 1.59 GPM fills an 8-ounce cup in 2.3 seconds
- Three-stage filtration with PP, UF, and CT filters lasting 6-24 months
- Lead-free brushed stainless steel dedicated faucet included
- Multiple placement options including wall mount or direct faucet connection
Who it fits
Good fit for
This system suits households with municipal tap water who want to reduce chlorine, odors, and larger particulates. It is ideal for users who want better tasting water for drinking, cooking, and baby formula without removing beneficial minerals. The high flow rate benefits busy kitchens. It fits under sinks with standard pipe connections. You should choose this if you do not need TDS reduction or water softening. The dedicated faucet allows separate use for drinking and washing.
Who should skip it
Skip this model if you have well water or need to reduce total dissolved solids. The product data states it is not suitable for well water or hot water sources. It does not remove dissolved salts or minerals. If you require softened water for laundry or dishwashing, this ultrafiltration system will not help. It is also not for users who want a faucet without a dedicated installation. The system requires connection to cold water lines only. Check your water source compatibility before buying.
Verdict: The Waterdrop TST-B is a practical choice for municipal water users seeking improved taste and odor removal. Its high flow rate and multi-stage filtration make it suitable for daily kitchen tasks.
Key specs for Waterdrop TST-B
Filtration: 0.01μm ultrafiltration membrane
This membrane size blocks particles larger than 0.01 microns, including chlorine, heavy metals, and odors. Unlike reverse osmosis, it does not remove dissolved salts or reduce TDS. You get filtered taste without wasting water. This suits buyers who want improved flavor and safety from municipal tap water without the complexity of RO systems.
Flow rate: up to 1.59GPM
This high flow rate fills an 8-ounce cup in 2.3 seconds. You can fill pots or mix baby formula quickly without waiting. Most RO systems have much slower flow rates. This spec means you do not need a storage tank or wait for pressure buildup. It is ideal for households with high water usage.
Dimensions: 14.5 inches high, 13 inches long, 4.92 inches wide
These compact dimensions fit under most standard kitchen sinks. The slim profile allows placement on the floor or wall mounting if space is tight. You can compare this footprint with bulkier RO units that require more cabinet space. The size ensures the unit does not crowd your storage area or block other plumbing.
Weight: 13 pounds
This weight indicates a sturdy build that remains stable during operation. It is light enough for one person to handle during installation but heavy enough to resist vibration. You do not need additional bracing for most under-sink cabinets. This contrasts with lighter plastic units that may feel flimsy or shift during use.
Design and build quality
According to the listing, the Waterdrop TST-B system measures 13 inches long, 4.92 inches wide, and 14.5 inches tall. It weighs 13 pounds. These dimensions allow for flexible placement under most standard kitchen sinks. You can position the unit on the floor or mount it on the wall. The compact footprint helps maximize storage space in tighter cabinets.
The housing supports direct connection to 3/8-inch or 1/2-inch home water pipes. This standard sizing simplifies installation for DIY users. The system includes a dedicated faucet made of lead-free brushed stainless steel. This finish resists water spots and fingerprints, maintaining a clean look over time. You can use the original sink tap for washing produce and the dedicated tap for drinking water. This setup keeps purified and untreated water separate.
The unit is designed for cold municipal water only. It does not handle hot water or well water sources. The filter cartridges are housed within the main body, which reduces the need for external components. This integrated design minimizes clutter under the sink. The streamlined layout ensures that the system remains stable during operation. You get a solid build that fits standard plumbing configurations without requiring extra drilling or complex modifications.
Setup and everyday use guide
Installation connects directly to your home water pipe using 3/8 inch or 1/2 inch fittings. The system supports multiple placement options. You can mount it on the floor or hang it on the wall. If space is tight, you can attach it directly to the faucet without extra drilling. This flexibility helps you fit the unit into various under-sink layouts. The product includes a dedicated lead-free brushed stainless steel faucet. You can use separate taps for different tasks. For example, use the original tap for washing produce and the purified tap for drinking. This setup allows dual water access without cross-contamination. Daily use relies on a flow rate of up to 1.59 gallons per minute. This speed fills an 8-ounce cup in roughly 2.3 seconds. The flow remains steady during use, which is useful for cooking or mixing formulas. Remember that this system is designed for municipal cold water only. It is not suitable for well water or hot water sources. Also, note that it does not reduce total dissolved solids. The filtration targets particles larger than 0.01 microns. You get better taste without altering mineral content. Filter life varies by stage. The PP filter lasts 6 to 8 months. The UF and CT filters last between 12 and 24 months. This schedule helps you plan maintenance without guesswork.
Before you buy the Waterdrop TST-B
Before purchasing the Waterdrop TST-B, verify your water source. This system works only with municipal cold tap water. Do not install it on well water or hot lines. The unit does not reduce TDS, so it cannot soften hard water or remove dissolved minerals. If you need TDS reduction, this model is not suitable. You will need to buy replacement filters separately. Search for B0D91M9322 for the PP stage, B0D91VJ8ZK for the UF membrane, and B0D91VQ298 for the CT carbon block. Plan your maintenance schedule accordingly. The PP filter lasts six to eight months, while the UF and CT stages last up to a year. This system fits well alongside reverse osmosis picks as a high-flow, low-waste alternative. It suits households wanting better taste without the water waste of RO. Ensure your sink space accommodates its 13-inch length and 14.5-inch height. The included lead-free faucet adds convenience for dedicated drinking water access.
Check before you buy
- Confirm you have municipal cold tap water only.
- Check sink space for 13-inch length and 14.5-inch height.
- Verify you do not need TDS reduction or softening.
- Note separate filter part numbers for maintenance.
- Ensure you can connect to 3/8 or 1/2 inch pipes.
The product at a glance
Waterdrop TST-B Under Sink UF Filter
Best for: improving tap water taste and flow speed
- Filtration Stages
- 3
- Design
- Under sink
- Filtration Type
- Ultrafiltration
- Contaminants Removed
- Chlorine, heavy metals
- Installation Type
- Under sink
- Micron Rating
- 0.01
View on Amazon: Waterdrop TST-B Under Sink UF Filter Affiliate link
The Waterdrop TST-B is an under-sink filtration system designed for municipal cold water. It uses a 0.01-micron ultrafiltration membrane to remove impurities, chlorine, and odors. It does not reduce TDS. The unit features a fast flow rate of up to 1.59 GPM and includes a dedicated lead-free faucet. It measures 14.5 inches high and weighs 13 pounds. This system suits users seeking improved taste without water softening.
Pros
- 0.01-micron ultrafiltration membrane removes large impurities
- Flow rate up to 1.59 GPM fills an 8-ounce cup in 2.3 seconds
- Includes a lead-free brushed stainless steel dedicated faucet
- Flexible placement on floor, wall, or directly onto faucet
Cons
- Does not reduce TDS levels
- Limited to municipal cold water sources only
- No hot water compatibility
Good fit if
- You want to improve taste and remove chlorine from tap water
- You need a fast flow rate for cooking or baby formula
- You prefer a system with a dedicated drinking water faucet
Skip if
- You need to reduce TDS or soften hard water
- You use well water as your source
- You require hot water filtration
Verdict: The Waterdrop TST-B Under Sink Filter is a solid option for municipal water users who prioritize speed and taste over mineral removal. It fits well in kitchens where a dedicated faucet is desired and TDS reduction is not needed.
Specifications side by side
| Spec | Waterdrop TST-B Under Sink UF Filter |
|---|---|
| Filtration Stages | 3 |
| Design | Under sink |
| Filtration Type | Ultrafiltration |
| Contaminants Removed | Chlorine, heavy metals |
| Installation Type | Under sink |
| Micron Rating | 0.01 |
| Features | Chlorine Reduction |
| Dimensions | 13 × 4.92 × 14.5 inches |
| Weight | 13 pounds |
| Size | 1 Count (Pack of 1) |
| Color | Includes new dedicated faucet |
| Model | WD-TST-B |
Frequently asked questions
Does the Waterdrop TST-B remove dissolved solids?
No, this system does not reduce total dissolved solids (TDS). It uses ultrafiltration to block particles larger than 0.01 microns, such as chlorine and heavy metals. Dissolved salts and minerals pass through the membrane. You will not see a drop in TDS readings after installation. It improves taste without altering mineral content.
What is the physical size of the filter unit?
The Waterdrop TST-B measures 13 inches in length, 4.92 inches in width, and 14.5 inches in height. It weighs 13 pounds. These dimensions allow it to fit under most standard kitchen sinks. You can place it on the floor or mount it on the wall for flexible installation.
Does the system include a dedicated faucet?
Yes, the package includes a new dedicated faucet. This allows you to dispense filtered water from a separate tap rather than using your main kitchen faucet. The unit is designed for under-sink installation, keeping the plumbing hidden while providing easy access to treated water.
Is this filter suitable for well water?
No, the Waterdrop TST-B is designed for municipal cold tap water only. Do not install it on well water or hot water lines. The ultrafiltration membrane is not intended for the specific contaminants found in well sources. Using it with unsuitable water sources may void performance or damage the unit.
What fittings are required for installation?
The system connects using 3/8 inch or 1/2 inch fittings. You can attach it directly to your home water pipe. These standard sizes allow for straightforward connection to most residential plumbing setups. Ensure your supply lines match these dimensions before beginning the under-sink installation process.
How does this compare to reverse osmosis systems?
Unlike reverse osmosis, this unit does not waste water during filtration. It uses ultrafiltration to remove particles like chlorine and odors without removing dissolved minerals. You get improved taste and flow speed without the storage tank or water waste typical of RO systems. It is ideal if you want taste improvement without TDS reduction.