Under-Sink Drinking Water Filtration System with Dedicated Faucet

In this review of the Culligan US 3 EZ-Change under-sink drinking water filtration system, the bottom line is simple: this kit is for households that want a dedicated faucet with noticeably better tasting, clearer water without complicated maintenance. The reviewer found installation straightforward and appreciated the included lead-free faucet and tubing, making it a near-complete package out of the box. The single biggest reason to buy is the EZ Change cartridge design that removes the need for wrenches or buckets and a built-in LED that helps know when filters need replacing.

Key Features

• Advanced EZ Change System: The twist-off cartridge design reduces mess and tools required, making filter replacement a quick, clean task.
• Comprehensive Filtration: The RC-EZ-3 cartridge reduces chlorine taste and odor, particulates class I, cysts, lead, turbidity, lindane and atrazine for better drinking water.
• Dedicated Faucet Included: A lead-free chrome faucet is included so the system supplies filtered water at a separate tap for drinking and cooking.
• Filter Life Indicator: The faucet-mounted LED cartridge life indicator removes guesswork by signaling when to change the filter.
• All Installation Hardware: Supply adapter, tubing, mounting screws and head assembly are included so most installs can be completed with minimal extra parts.
• Certified Performance: Filter tested to NSF/ANSI 42 and 53 for specific reductions in aesthetic contaminants and health-related substances.

Who It's For

This system is aimed at households that want a dedicated drinking faucet and simple maintenance: families who cook with filtered water, people sensitive to chlorine or lead in tap water, and anyone who values a tidy cartridge change. The included parts and clear instructions suit DIYers with basic under-sink experience and those replacing an older under-sink faucet-filter setup.

Shoppers who need whole-house filtration, very high flow rates, or long-run replacement intervals beyond 500 gallons per cartridge should look elsewhere. Also, if under-sink space is extremely limited or if you require bundled softening or heavy-duty industrial filtration, this point-of-use unit is not intended for that use.

Pros & Cons

Pros

• Easy installation with included head assembly, tubing and mounting hardware for a near-complete kit.
• Improves water taste and reduces chlorine and particulates, making tap water more palatable for drinking and cooking.
• Cartridge lasts up to 6 months or about 500 gallons depending on usage, providing predictable maintenance intervals.
• Certified reductions to key contaminants give confidence in performance for lead and cysts.

Cons

• Some users report occasional dripping at the faucet or connections, so careful sealing during install is important.
• Point-of-use design means only the dedicated faucet is filtered; other taps remain unfiltered.

Specifications

Brand	Culligan
Model Cartridge	RC-EZ-3
Filter Life	Up to 6 months or 500 gallons
Included Components	Head assembly, RC-EZ-3 filter, lead-free faucet, tubing, mounting hardware, change reminder sticker, faucet battery
Certifications	IAPMO tested to NSF/ANSI 42 and 53
Compatibility	Works with RC-EZ-1, RC-EZ-3 and RC-EZ-4 replacement cartridges

Our Verdict

The Culligan US 3 EZ-Change offers a practical balance of performance and convenience for people who want a dedicated filtered faucet with minimal fuss. Its EZ Change cartridge, included hardware and certified contaminant reductions make it good value for kitchen point-of-use filtration, though buyers should expect to replace cartridges about twice a year and confirm leak-free connections at install.

Frequently Asked Questions

How long does the filter last?
The RC-EZ-3 cartridge is rated for up to 6 months or about 500 gallons, depending on water use and conditions.

Does the system remove lead?
Yes, the filter is tested to NSF/ANSI 53 for reduction of lead among other contaminants.

Is the faucet included lead free?
Yes, a lead-free dedicated chrome faucet with an electronic filter life indicator is included in the kit.