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Specs
- Made by
- Waterdrop
- SKU
- WD-T4-A
- Type
- System
- Category
- RO system
- Daily output
- 450 gallons per day
Specs are from Waterdrop's product page. Anything Waterdrop does not state is left out.
Fits these models
Waterdrop does not list compatible models for this item. Check the model number on your system or old filter, or ask us.
What it is certified for
We show only the certification statements Waterdrop gives for this product, word for word. You can check them in the certifier's public listing.
About this item
The Waterdrop T4-A is an under-sink reverse osmosis system made by Waterdrop. It provides filtered water right at your sink with a daily output of 450 gallons per day.
This unit is built for homeowners who want an under-sink system with dual-flow and alkaline features. It connects under your kitchen counter to supply your daily drinking and cooking water.
Before you install
Always turn off the cold water supply before you begin any plumbing work under the sink. Reverse osmosis systems require both a cold water connection and a small drain line for waste water.
Run some water through the new system before you drink from it. Follow the flush steps in your manual. If you are not sure about doing the plumbing work yourself, hire a licensed plumber.
Maintaining your reverse osmosis system
Reverse osmosis systems use multiple stages to clean your water. Typical change intervals are rough guidance. RO pre and post filters are usually changed every 6 to 12 months, while RO membranes last about 2 to 3 years. The manual always wins for exact schedules.
A filter is built to handle a set amount of water. You should change cartridges sooner if your water flow slows down or if the indicator light comes on. Keep in mind that filter lights track time or water used, not actual water quality.
What it fixes
- Filters drinking water under the kitchen sink
- Provides up to 450 gallons per day of filtered water
- Supplies water through a dedicated dual-flow setup
- Replaces older, worn drinking water systems under the counter
How to confirm it fits
- Check the part number on your unit to ensure it matches WD-T4-A.
- Confirm you want an under-sink RO system rather than a countertop unit.
- Verify you have room under your sink for the unit and its small drain line.
- Check that your household output needs match the 450 gallons per day rating.
Questions
What is the daily output of the Waterdrop T4-A?
The daily output for the WD-T4-A system is 450 gallons per day.
Does this system need a drain line?
Yes. A reverse osmosis system uses a membrane and needs a small drain line to carry away wastewater.
What should I do before using water from a new filter?
Run some water through the new filter before you drink it. Check the flush steps on the box or in the manual.
What should I do if I am uncomfortable installing the plumbing?
If you are not sure about plumbing work, hire a licensed plumber to help you set up the system.
Guides for this item
Shipping and returns
Orders ship from Waterdrop in 1 to 3 business days. Free standard shipping on orders over $35.
Wrong fit or a problem? Contact us within 30 days of delivery.
Full shipping and return policy