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Waterdrop T4-A 450GPD Alkaline Dual Flow Reverse Osmosis System
Ultimate Upgrade of RO System
Enjoy better-tasting & instant pure water and user-friendly designs from now!
Get Better-Tasting
Instant Pure Water
Save More Space
All-in-one Cartridge
Dual-Flow Alkaline RO System
Enjoy clean RO water for safe drinking and alkaline water that helps balance body, improve digestion,
and keep you hydrated — all in one system.
Dual Flow, Dual UV Sterilizer — Always Safe Drinking
You're covered on every sip — Waterdrop's dual-flow RO
system gives you double protection, with a UV sterilizer built into each line.


Auto-Flush RO System, Smarter & Fresher
Waterdrop WD-T4-A keeps your water fresh at all times,
ensuring a consistently great taste.
2:1 Pure to Drain, Saves 800% Water
Waterdrop T4-A — your choice for water & environmental
savings

Compare T Series
| Compare T Series |
|||
|---|---|---|---|
| Flow Rate | |||
| Flow Rate | 450 GPD | 450 GPD | 450 GPD |
| Alkaline Mineralization | |||
| Alkaline Mineralization | √ | √ | × |
| Pure to Drain Rate | |||
| Pure to Drain Rate | 2:1 | 2:1 | 2:1 |
| Filtration Stages | |||
| Filtration Stages | 10 Stages | 9 Stages | 8 Stages |
| Warranty | |||
| Warranty | 1 Years | 1 Years | 1 Years |
| Certification | |||
| Certification | NSF/ANSI 372 | NSF/ANSI 372 | NSF/ANSI 372 |
| Dimensions (inch) | |||
| Dimensions (inch) | 16.54*6.22*17.95 | 16.54*6.22*17.95 | 16.54*6.22*17.95 |
| Item Weight | |||
| Item Weight | 24.25 Pounds | 20.06 Pounds | 19.6 Pounds |
FAQ
Curious about how the countertop water filter works? Our FAQ section
covers everything from filter lifespan to installation tips for clean, pure water every day.
Contact Us
How does the dual-flow feature benefit
me?
You can switch instantly between standard RO-purified water for everyday drinking and an alkaline
stream that adds beneficial minerals, perfect for coffee, tea, or anyone who prefers a smoother
taste profile.
Does the system keep water hygienic after
filtration?
Yes. Each water line has its own UV LED sterilizer that continuously disinfects the water as it
leaves the filter, safeguarding freshness all the way to the faucet.
Does it require a storage tank?
No. The compact, tankless design prevents secondary contamination and frees up about 70 % more
under-sink space compared with tank-based RO systems.
Is installation complicated?
No! The tank-free design make under-sink installation straightforward for most homeowners — no bulky
tank to position or maintain.
Will the alkaline stream affect
beverage flavor?
Yes — positively. The mineral-enhanced line can improve the taste and aroma of coffee, tea, and
cooking water while still delivering contaminant-reduced purity.
MORE
CLOSE
Ultimate Upgrade of RO System
Enjoy better-tasting & instant pure water and user-friendly designs from now!
Get Better-Tasting
Instant Pure Water
Save More Space
All-in-one Cartridge
Dual-Flow Alkaline RO System
Enjoy clean RO water for safe drinking and alkaline water that helps balance body, improve digestion,
and keep you hydrated — all in one system.
Dual Flow, Dual UV Sterilizer — Always Safe Drinking
You're covered on every sip — Waterdrop's dual-flow RO
system gives you double protection, with a UV sterilizer built into each line.


Auto-Flush RO System, Smarter & Fresher
Waterdrop WD-T4-A keeps your water fresh at all times,
ensuring a consistently great taste.
2:1 Pure to Drain, Saves 800% Water
Waterdrop T4-A — your choice for water & environmental
savings

Compare T Series
| Compare T Series |
|||
|---|---|---|---|
| Flow Rate | |||
| Flow Rate | 450 GPD | 450 GPD | 450 GPD |
| Alkaline Mineralization | |||
| Alkaline Mineralization | √ | √ | × |
| Pure to Drain Rate | |||
| Pure to Drain Rate | 2:1 | 2:1 | 2:1 |
| Filtration Stages | |||
| Filtration Stages | 10 Stages | 9 Stages | 8 Stages |
| Warranty | |||
| Warranty | 1 Years | 1 Years | 1 Years |
| Certification | |||
| Certification | NSF/ANSI 372 | NSF/ANSI 372 | NSF/ANSI 372 |
| Dimensions (inch) | |||
| Dimensions (inch) | 16.54*6.22*17.95 | 16.54*6.22*17.95 | 16.54*6.22*17.95 |
| Item Weight | |||
| Item Weight | 24.25 Pounds | 20.06 Pounds | 19.6 Pounds |
FAQ
Curious about how the countertop water filter works? Our FAQ section
covers everything from filter lifespan to installation tips for clean, pure water every day.
Contact Us
How does the dual-flow feature benefit
me?
You can switch instantly between standard RO-purified water for everyday drinking and an alkaline
stream that adds beneficial minerals, perfect for coffee, tea, or anyone who prefers a smoother
taste profile.
Does the system keep water hygienic after
filtration?
Yes. Each water line has its own UV LED sterilizer that continuously disinfects the water as it
leaves the filter, safeguarding freshness all the way to the faucet.
Does it require a storage tank?
No. The compact, tankless design prevents secondary contamination and frees up about 70 % more
under-sink space compared with tank-based RO systems.
Is installation complicated?
No! The tank-free design make under-sink installation straightforward for most homeowners — no bulky
tank to position or maintain.
Will the alkaline stream affect
beverage flavor?
Yes — positively. The mineral-enhanced line can improve the taste and aroma of coffee, tea, and
cooking water while still delivering contaminant-reduced purity.
MORE
CLOSE
$113.79
Original: $325.12
-65%Waterdrop T4-A 450GPD Alkaline Dual Flow Reverse Osmosis System—
$325.12
$113.79Description
Ultimate Upgrade of RO System
Enjoy better-tasting & instant pure water and user-friendly designs from now!
Get Better-Tasting
Instant Pure Water
Save More Space
All-in-one Cartridge
Dual-Flow Alkaline RO System
Enjoy clean RO water for safe drinking and alkaline water that helps balance body, improve digestion,
and keep you hydrated — all in one system.
Dual Flow, Dual UV Sterilizer — Always Safe Drinking
You're covered on every sip — Waterdrop's dual-flow RO
system gives you double protection, with a UV sterilizer built into each line.


Auto-Flush RO System, Smarter & Fresher
Waterdrop WD-T4-A keeps your water fresh at all times,
ensuring a consistently great taste.
2:1 Pure to Drain, Saves 800% Water
Waterdrop T4-A — your choice for water & environmental
savings

Compare T Series
| Compare T Series |
|||
|---|---|---|---|
| Flow Rate | |||
| Flow Rate | 450 GPD | 450 GPD | 450 GPD |
| Alkaline Mineralization | |||
| Alkaline Mineralization | √ | √ | × |
| Pure to Drain Rate | |||
| Pure to Drain Rate | 2:1 | 2:1 | 2:1 |
| Filtration Stages | |||
| Filtration Stages | 10 Stages | 9 Stages | 8 Stages |
| Warranty | |||
| Warranty | 1 Years | 1 Years | 1 Years |
| Certification | |||
| Certification | NSF/ANSI 372 | NSF/ANSI 372 | NSF/ANSI 372 |
| Dimensions (inch) | |||
| Dimensions (inch) | 16.54*6.22*17.95 | 16.54*6.22*17.95 | 16.54*6.22*17.95 |
| Item Weight | |||
| Item Weight | 24.25 Pounds | 20.06 Pounds | 19.6 Pounds |
FAQ
Curious about how the countertop water filter works? Our FAQ section
covers everything from filter lifespan to installation tips for clean, pure water every day.
Contact Us
How does the dual-flow feature benefit
me?
You can switch instantly between standard RO-purified water for everyday drinking and an alkaline
stream that adds beneficial minerals, perfect for coffee, tea, or anyone who prefers a smoother
taste profile.
Does the system keep water hygienic after
filtration?
Yes. Each water line has its own UV LED sterilizer that continuously disinfects the water as it
leaves the filter, safeguarding freshness all the way to the faucet.
Does it require a storage tank?
No. The compact, tankless design prevents secondary contamination and frees up about 70 % more
under-sink space compared with tank-based RO systems.
Is installation complicated?
No! The tank-free design make under-sink installation straightforward for most homeowners — no bulky
tank to position or maintain.
Will the alkaline stream affect
beverage flavor?
Yes — positively. The mineral-enhanced line can improve the taste and aroma of coffee, tea, and
cooking water while still delivering contaminant-reduced purity.
MORE
CLOSE




















