About Us

We are Culligan ZeroWater.

Culligan Zero Water is a leading brand of water filter pitchers from the United States, manufactured by Zero Technologies, LLC (USA). Zero Water has been a member of the Culligan family since 2020. Combining Zero Water's advanced 5-stage filtration technology with Culligan's 85-year legacy in the water business, we are on a mission to make clean, safe, and better-tasting water instantly accessible to everyone. Culligan Zero Water is the only water filter that delivers pure, clean drinking water, free from contaminants, and measures a TDS of 000.

Better water starts with zero.

Culligan ZeroWater is a unique flow-through water filtration pitcher that is specially designed to thoroughly remove (99.9%) suspended solids from your drinking water, and ZeroWater is the only water filtration product to do so. Proudly IAPMO certified to reduce harmful contaminants like PFOA/PFOS and chromium. Find out more here.

Zero compromise. Zero doubt.

Worried about what's in your water? Culligan ZeroWater removes guesswork so you can drink with confidence. All our pitchers and dispensers are equipped with a Total Dissolved Solids (TDS) meter, so you always know the level of TDS in your water and when it's time to replace your filter.

Our Footprint

Transforming water for millions worldwide

Culligan products and services provide clean, safe water in homes, offices, and communities around the world.

90+

Countries with direct and indirect operations

20k +

Service visits per day

14k +

Employees worldwide

Roong Koo Company Limited is an authorized distributor of the popular Culligan ZeroWater, an advanced 5-Stage water filtration system from the United States, which was introduced in Thailand in 2020.