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
T4-A
Add to Cart
T3-M
Add to Cart
T3-C
Add to Cart
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.
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.
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
T4-A
Add to Cart
T3-M
Add to Cart
T3-C
Add to Cart
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.
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.
