3-stage Under Counter Direct Connect Filtration System Waterdrop TSA

Direct connect. Advanced filtration.
Regular price $135.00
Sale price $135.00 Regular price
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  • Key Feature
    • [Cost-effective upgrade] Compared to the filtration system with single filter, this under counter water filter can reduce more contaminants with more filters and longer service life.
    • [Multi-stage deep filtration] The 8-stage water filtration system can effectively reduce over 100 harmful substances including silt, rust, heavy metals, chlorine, fluoride and the like. This system can retain natural minerals, but cannot reduce the TDS.
    • [No cracking,no leaking] With sealed and durable under sink water filters, there is no need to change bottom caps and no worries about cracking and leaking.
    • [Built to last] The 3 under counter water filters have a lifespan of 6 months, 8-12 months, and 12-18 months, respectively. [1] The 3-stage under counter drinking water filter's long lifespan reduces the burden of purchasing filters every now and then.
    • [Effortless installation] The entire installation process takes less than 3 minutes with no plumbing required. The twist-and-lock design allows you to replace each filter in just 3 seconds. Click here to compare our undersink filtration systems.
    • [Impressive compatibility] This under sink water filtration system works perfectly with 3/8" and 1/2" cold water tubes.
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Shipping policy

Shipping rates and delivery estimates

Shipping Method

Estimated Delivery Time


Economy Shipping

4-10 Business Days


Standard Shipping

3-6 Business Days

$5.99(Free on order over $200)

Express Shipping

2-5 Business Days


* Shipping charges for your order will be calculated and displayed at checkout.

* The Delivery Time is calculated based on the shipping date, not the order date. The actual shipping date can be delayed due to invalid shipping address, weekends/holidays, etc.

Handling Time:

We need 24h to 48h to prepare your order, most of the packages will be shipped out within 24 hours except weekends and holidays.

Track your order

Once your order is shipped, you will receive an email from us containing the tracking information. Tracking information is also available in your "Order Details" page.

Shipping areas

The products can be delivered to the most of states in United States except American Samoa, Micronesia, Guam, Marshall Islands, Northern Mariana Islands, Palau, Puerto Rico and U.S. Virgin Islands.

International shipping

We are sorry that the international shipping service is not supported for the time being.

Shipping Carriers

We work with 4 carriers to make sure your order will arrive on time: UPS, USPS, FedEx and Amazon Logistics US.

Delivery Time Exceeded

Shipping might experience delay due to covid-19. If your order is delayed, please contact us via email service@waterdropfilter.com, we will check the situation with the transportation company in time. Thanks for your understanding and support.

Note: We don't accept requests to specify a certain carrier to deliver the package.

Shipping origin

The package will be shipped from one of our US warehouses closest to your location.

* If you have any questions, you can contact our customer via LiveChat or email to service@waterdropfilter.com, we will reply to you as soon as possible!

Sales Tax

The sales tax will be collected in accordance with U.S. tax laws. Customers whose delivery address within the following states will be charged a certain tax at checkout, and the tax rate is determined by the local government. (AZ, CA, CO, FL, GA, IL, IN, KY, MA, MD, MI, MN, NC, NJ, NV, NY, OH, PA, TX, UT, VA, WA, WI) All taxes collected will be reported and filed to the IRS on time.

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No Worries Guarantee

Thanks for shopping at Waterdrop. We appreciate the fact that you like to buy the stuff we build. We also want to make sure you have a rewarding experience while you're exploring, evaluating, and purchasing our products.


If you wish to cancel an order, please contact our customer service team

If you contact us within 24 hours of purchase:

We can cancel the order for you at no additional cost. The cancellation may take up to 3 days, thank you for your patience and understanding.

If the package is already shipped, we will issue a prepaid label and return your payment after we have received the package from you.

If you contact us after 24 hours of purchase:

You need to bear the return fee if the package is already shipped (depends on our system, not the order status).

The product has to be damage-free, packed in the packaging we sent to you, and with the original receipt of the purchase.

We will return your payment after we have received the package from you.

There are times when we may not have the product(s) that you choose in-stock or may face some issues with our inventory and quality check. In such cases, we may have to cancel your order. You will be intimated about it in advance so that you do not have to worry unnecessarily about your order.

Return Policy

We accept return reasons including defective, no longer needed, change mind, not as described, etc.

If you want to return the item without any quality issue, you need to bear the return fee yourself and pay 20% of the original order as a restocking fee. We will cover the return postage for return requests regarding quality issue.

Once you received a damaged / incorrect item and you want to file a claim, please email


together with your order information and the picture of the damaged / incorrect product. We are eager to help.

If you would like to return a product, please follow the next guidelines:

Step 1: contact the customer service team before return a product, we will reply you with return tips within 24 hours.

How to contact:

Email: service@waterdropfilter.com

Toll-free Tel: (888)-352-3558

Step 2: prepare package after you get confirmation from customer service team, please be noted the following requirements:

• The order number needs to be included in the package. You can print out the order detail page or leave a note in the package.

• The package needs to come back with the original receipt of the purchase.

• The product has to be in the packaging we sent in the first place.

• The product has to be damage-free (not applicable for defective products), damage on the product will void the refund.

Step 3: Please contact our customer service and send your return tracking number. We will track the package, and refund your money within 5 working days after we receive and check the package .

Return Window

We offer a 30-day return guarantee. Warranty will begin from the date the product is received. If a product grows defective during the warranty period due to a quality issue rather than your own breakage or misuse, we can accept a return, provide free repair service, or issue a new replacement.

Return address:

Ecolife Technologies, Inc.

17910 Ajax Circle

City of Industry, CA 91748

United States

Tel: 888-352-3558

Refund Policy

After receiving your request or your packages, it may take up 1-7 business days to refund your money. (Unfortunately, due to current situations and the COVID-19, your refund may require an additional 3-5 days to process. Thank you for your patience and understanding.)

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3-stage Under Counter Direct Connect Filtration System Waterdrop TSA

Regular price $135.00
Sale price $135.00 Regular price
Model Number
Feed Water Pressure
10-125 psi
Feed Water Temperature
35-100℉/ 2-38℃
Flow Rate
1 gpm
Filter Capacity
WD-10PP: 6 months
WD-10GC: 8-12 months
WD-10CT: 12-18 months

Is under counter water filter worth to buy?

Date back to about a decade ago, Americans don’t pay much attention on water pollution issue. So the under counter water filter isn’t that necessary in the US households. Because they believe that the US municipal tap water has been treated and tested under vigorous procedures, which ensures drinking water safety.
It’s supposed to be so. However, non-stop water safety crisis occurs that suggested otherwise. Recently, drinking water in Flint, Michigan was found to contain high level of lead, poisoning the residents, especially children.
It turned out that, though the water was certified to be safe out of the factory, it traveled to your home with various contaminants along the way. In this case, it carried lead from the old pipes to the homes of over 100,000 residents.
Thus, the sole reliance on factory’s treatment to our drinking water is not enough. There is a very high chance that your drinking water comes with lead, chlorine, bacteria, and a bunch of other contaminants that can lead to serious health problems.
In all, to meet your household daily water needs for drinking and cooking, the countertop and under-sink filters are your best solution.

What is the difference between WD-TSA and WD-TSB ?

WD-TSA is designed to connect to your original faucet and has different connecting options for your under sink or a RV. While WD-TSB comes with a lead-free brushed stainless steel faucet. It has a high water flow, giving you clean drinking water anytime you need it. You can make your choice based on the your household needs.

What are the differences between WD-TSA / TSB and WD-UA / UB ?

WD-TSA/ TSB is the upgrade version of WD-UA/ UB. This 3-stage under the sink filter system is composed of three filters and has more filtration materials than WD-UA/ UB. The added last two filters are full of active carbon to improve water taste greatly.

How to install the 3-stage under counter drinking water filter ?

The 3-stage under counter drinking water filter comes with a complete accessories pack, including all kinds of accessories you may need. You won’t be bothered by spending forever on assembly. Installation takes less than 3 minutes for the sake of convenient fittings. You can get more information by searching “How to install WD-TSA/ WD-TSB water filter system” on YouTube.

How to replace under counter water filters ?

Replacement takes only 3 seconds for its twist-lock design. Just pull off the old filter and insert a new one into the cap.

When to replace the filters of this under sink water filtration system ?

The 3 filters have a lifespan of 6 months, 8-12 months, and 12-18 months, respectively. The long lifespan reduces the burden of purchasing and replacing filters every now and then. Please make sure to change filters within recommended lifespan to get best purification performance and avoid the secondary pollution caused by expired filters.

Does the installation of this 3-stage under counter drinking water filter needs any tools or kits ?

The system comes with an all-you-need accessories pack, including all components you may need. No other tools or plumbing service needed.

What can this under counter water filter remove ?

This under counter water filter is more effective than one with single filter. The PP cotton effectively reduces rust, sand, large particles, etc. The granule activated carbon filter reduces chlorine, taste and odor, thus improving water taste. The natural carbon block and KDF filter prevents pollutants from accumulating and improves water taste furthermore. [2]

Can Waterdrop 3-stage under the sink filter system reduce TDS ?

Waterdrop under counter water filter reduces pollutants while retains natural minerals, but it would not reduce the TDS in water. If you are looking for a water filter to effectively reduce the TDS in water, please choose the reverse osmosis systems. Click here to visit our RO page.

What are the pros of this water filter for sink ?

This under counter water filter is more effective than the ones with single filter. The integrated filter design makes the installation and filter replacement easier than ever. Under this integral design, the filter is fully sealed and won’t breed pollutants, therefore ensures the filtered water stay clean and pure. The ultra-durable materials add sturdiness to prevent filter from cracking and leaking.

Why does the water leak after the installation ?

Water may leak at connection position or thread due to incomplete connection. If water leakage occurs, turn off the water supply. If the water leakage is at thread, please wrap Teflon tape on the external thread. If the water leakage is at inlet and outlet, please insert the quick-connect fitting to the end.
8-layer Filtration
8-layer Filtration
8-layer Filtration
The 8-stage water filter system can effectively reduce silt, rust, large particles, heavy metals, micro substances, fluoride and chlorine to improve the taste of drinking water, coffee or beverage. Besides, the water filter can retain natural minerals, but cannot reduce TDS.
Inhibit Bacterial and Microbial Breeding
With adoption of high-quality KDF filtering materials, the filter can effectively reduce chlorine and heavy metals in water, and inhibit bacterial and microbial growth.
Inhibit Bacterial and Microbial Breeding
Effectively Reduce Fluorides
Effectively Reduce Fluorides
The filter can reduce 97% of fluorides to guarantee health and safety of drinking water.
Authoritative Certification NSF/ANSI 42&372
The CT filter has passed WQA authoritative certification, ensuring better taste of drinking water and improving the drinking experience.
Authoritative Certification NSF/ANSI 42&372
Lifespan up to 18 Months
Lifespan up to 18 Months
By means of the water filter system, the replacement frequency and the maintenance cost can be reduced while it meets water demands of a big family. The water filter system is more economical and efficient than bottled water, and over 50% of water costs can be saved every day.
PP filter :6 months
GC filter :8-12 months
CT filter :12-18 months
Simple Operation
The water filter system can be installed in 3 minutes and can be replaced in 3 seconds. By innovative push-in connecting accessories and a twist-to-lock design, it is effortless to install.
Simple Operation
Lifespan up to 18 Months
[1]*The service life mentioned above is subject to chlorine reduction. Actual result varies according to the local water quality.
[2]*Information is based on CARBON BLOCK MANUFACTURING by WQP, June 2001.
*Information is based on EPA Facts About Actived Carbon Treatment by EPA in 1992