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Availability:
In Stock.
Arrives
Sunday, Nov 15
At a glance
- Condition
- New
- Model
- US-DC3
- Capacity
- 4750 gal
- Dimensions
- 3.5"L x 3.5"W x 12"H
- Weight
- 3.4 lb
- Material
- Carbon Block, Plastic
- Package Information
- Cartridge
- In the box
- US-DC3-R CartridgeMounting BracketTubingSupply AdapterScrews
- Warranty
- 2-Year Limited Warranty
Features 5
- REDUCES 98% OF LEAD: Certified carbon block filtration also reduces chlorine taste and odor, sediment, and particulate Class I for safer drinking water.
- NO EXTRA FAUCET NEEDED: Connects directly to your existing cold water line no second tap, no hole drilled in your countertop.
- STRONG 1.5 GPM FLOW: Three times the flow of typical under-sink systems, so filtered water comes out at full pressure from your regular faucet.
- 12-MONTH CARTRIDGE LIFE: Up to 4,750 gallons per cartridge. Replace with US-DC3-R using a quick tool-free twist-lock no shut-off required.
- EVERYTHING INCLUDED: Ships with the US-DC3-R cartridge, integrated mounting bracket, 3/8" plastic tubing, supply adapter, and mounting screws.
Description
The Culligan US-DC3 direct connect under-sink system is certified to reduce up to 98% of lead without sacrificing cold water flow at the sink. It connects directly to your existing cold water line, so no second faucet and no hole in the countertop are required. With a 1.5 GPM flow rate, filtered water comes out at full pressure from your regular tap. The package includes the US-DC3-R replacement cartridge, an integrated mounting bracket, 3/8-inch plastic tubing, supply adapter, and mounting screws. Quick twist-lock cartridge replacement is tool-free and requires no water shut-off. Each cartridge lasts up to 4,750 gallons or 12 months. The system also accepts US-DC1-R basic and US-DC4-R superior cartridges, so you can match filtration to your water.
Specs 31
| Brand | Culligan |
|---|---|
| Special Feature | 1.5 GPM High Flow, Direct Connect Install, Filter Included, Reduces 98% Of Lead, Twist-Lock Cartridge Change |
| Product Dimensions | 3.5"L x 3.5"W x 12"H |
| Material | Carbon Block, Plastic |
| Capacity | 4750 gallons |
| Package Information | Cartridge |
| Installation Type | Under Sink |
| Purification Method | Carbon Block |
| Power Source | Not Powered |
| Other Special Features of the Product | 1.5 GPM High Flow, Direct Connect Install, Filter Included, Reduces 98% Of Lead, Twist-Lock Cartridge Change |
| Container Type | Cartridge |
| LowerTemperature Range | 40 °F |
| Maximum Flow Rate | 1.5 gpm |
| Operating Pressure Range | 30-125 psi |
| Upper Temperature Rating | 100 °F |
| Supported Water TDS Level Maximum (PPM) | 500 |
| Filter Life Cycle | 12 months |
| Item Dimensions L x W x H | 3.5"L x 3.5"W x 12"H |
| Item Weight | 3.4 pounds |
| Material Type | Carbon Block, Plastic |
| Brand Name | Culligan |
| Model Name | Under Sink Direct Connect Premium Lead Filtration System |
| Model Number | US-DC3 |
| UPC | 033663007741 |
| Global Trade Identification Number | 41 |
| Manufacturer | Culligan |
| Item Highlight | IAPMO Certified | Direct Connect To Existing Faucet | Reduces 98% Lead | 1.5 GPM | Easy Install | Filter Included |
| Number of Items | 1 |
| Unit Count | 1 Count |
| Item Type Name | Filtration System |
| Part Number | US-DC3 |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Nov 15
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Great product, no leaks, simple instructions.
Size: US-DC3 System
Water quality is great. Easy to install.
Reviewed in the United States on August 8, 2026 by Brian Simon
Great tasting water
Size: US-DC3 System
Our water tasted horrible. Decided to buy the Culligan US-DC3 direct connect under sink filter. Amazing what a difference it makes!! No more buying bottled water! Tastes great. I had a plumber friend install it so I can't comment about the ease of installation. For him it was pretty straight forward and didn't take long at all. I highly recommend this filter.
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Reviewed in the United States on November 18, 2025 by Bill
Filter my Water
Size: US-DC3 System
I luv it ! Makes the water taste great and the coffee too. Culligan knows how to do it better!
Reviewed in the United States on May 7, 2026 by Rita M.
Water tastes better for sure!
Size: US-DC3 System
Easy install and the water tastes 100% better. You will need a ferrule for the plastic pipe if you connect it to an angle stop valve.
Reviewed in the United States on August 8, 2026 by John Purcell
Easy install if you're careful
Size: US-DC3 System
Pretty easy to install. When I first turned on the water I had a leak. Per the instructions, I disconnected the leaking end, re-cut it, and made sure to insert it ALL the way (it goes in farther that you might think). No leaks after that! Note that the pre-cut end has a crimp. You must re-cut the end before you cut to length. Flow rate is great - same as with no filter. Minus one start because filter is not ANSI certified.
...
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Reviewed in the United States on May 24, 2025 by anonymous
Easy to install
Size: US-DC3 System
We were looking for a good water filter for our coffee bar. Installed this one under the island prep sink and is working very well. Easy to install.
Reviewed in the United States on June 25, 2026 by Bottoms
BUYER BEWARE!!! Don't waste your money or time!
Size: US-DC3 System
I purchased the US-DC3 Under Sink Direct Connect Premium Lead Filtration System on Amazon on 12/27/22 for $100.99. I received it on 12/29/22 and didn’t install it until around mid-January 2023. In the middle of February 2023, the cold water started to slowly come out of the faucet. By the end of February 2023, the first part of March 2023 the cold water was just trickling out and only hot water was flowing regularly out of the faucet. I was determined the filter was faulty and was restricting water flow. On March 6, 2023, I contacted Culligan about their faulty US-DC3-R filter which lasted approximately 30 days. Culligan refused to replace the faulty filter claiming it was my water quality that was the issue, not their filter. It’s funny how Culligan knows what my water quality is without requesting a water quality report. Furthermore, I guess their water filter has a problem filtering water and may become inoperative as a result. I contacted Amazon to see if they would hold Culligan accountable for selling faulty water filter on their website. Amazon refused to intercede because it had been over 30 days since purchase. I will be searching for a new under sink water filter from a company that is reliable and offers excellent customer service. Obviously, Culligan is not that company.
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Reviewed in the United States on March 9, 2023 by Brian
Served its purpose while needed. Chlorine has been flushed through the system
Size: US-DC3 System
Installation was simple and easy to follow instructions. However, It does reduce and restrict flow through the cold water outlet. This affects and slows the cold water flow. Very frustrating. We added the filter to get rid of chlorine taste. When our pump was replaced. Reduced the chlorine on a cold water well until the chlorine was depleted when the new pump was replaced. Do to the water reduction inflow on the cold outlet, I will be disconnecting the filter. We do not have a chlorine issue since this is added during the replacement of our defective pump installation. It has been flushed through the system. Our well test concluded we have no issues with our water issues, safety, or quality.
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Reviewed in the United States on November 30, 2025 by DG