- [Damage-free installation] Say goodbye to drilling and compatibility concerns. The simple plug-and-twist design makes it great for renters. It also guarantees a hassle-free, quick installation of this under sink water filter system.
- [NSF/ANSI certified] The under sink water filter is NSF/ANSI 42 certified to reduce chlorine, taste, and odor and NSF/ANSI 372 certified for containing lead-free materials. Every drop of water is clean and safe.
- [Healthy hydration] Our 5+1 stage advanced filtration technology reduces harmful substances and adds essential minerals. Drink with confidence, nourish your body, and live a healthier lifestyle. (NOTE: This system DOES NOT lower TDS value because it adds beneficial minerals to the water.)
- [Safe materials] The under sink water filter system is made from food-grade stainless steel that is rust-resistant, durable, and leak-proof. The system maintains water purity while providing long-lasting reliability.
- [Long-lasting service life] Unlock a year of pure, filtered water with our under sink water filter’s 12-month filter lifespan! No more constant replacement, just continuous peace of mind.
Model number
WD-AS13
Replacement filter
WD-WF13
Operating temperature
40-100℉ / 5-38℃
Working pressure
15-100 psi / 100-689 kPa
Flow rate
1 GPM / 3.8 LPM (tested under 60 psi)
Feed water requirement
Municipal tap water
Filter capacity
12 months or 8,000 gallons
What should I do if water leaks after installation?
In the event of water leakage, turn off the water supply. If the water leakage is occurring at the
thread, wrap the Teflon tape around the external thread. If the water leakage is occurring at the quick
connection position, insert the quick-connect fitting to the end and make sure the hoses hit the bottom
of the fitting. Contact us for solutions if the water leakage persists.
Why does the TDS value not decrease after filtration?
The main purpose of this waterdrop filter is not to remove TDS. TDS stands for total dissolved solids,
and it is basically composed of inorganic salts and a small amount of organic matter. The filter can
remove harmful substances while keeping beneficial trace elements. Please choose Waterdrop RO system if
you are looking for physical removal of TDS.
When should I replace the filter?
The filter's service life is related to water quality. If the flow rate is significantly reduced or if
the water has a peculiar smell, we suggest that you replace the filter.
Why does black water come out during flushing?
It's normal that black water comes out when flushing. The purpose is to remove carbon powder remaining
on the surface of filter materials. You can normally use it after flushing for 5 minutes.
NSF/ANSI 42&372 Certified
The under sink water filter is NSF/ANSI 42 certified to reduce chlorine, taste, and odor and
NSF/ANSI 372 certified for containing lead-free materials, ensuring your drinking water safety.
5+1 Stage Filtration Technology
Effectively reduces harmful substances such as chlorine, lead,
chloroform and heavy metals, while adding essential minerals for safer, healthier hydration.
Food-Grade 304 Stainless Steel
Made from food-grade stainless steel, our under-sink water filter
system is built to last. It is rust resistant, durable and leak proof for long lasting reliability.
12-Month Filter Lifespan
Unlock a year of pure, filtered water without the hassle of
constant replacements. Enjoy continuous convenience.
Portable Design
Experience the convenience and flexibility of our renter-friendly
water filter.