Real customer reviews: Culligan filtration systems

Our filters use coal-based activated carbon mixed with KDF (a copper-zinc blend) and a mixed bed of ion exchange resin in a BPA-free housing. Together, they work to reduce a wide range of contaminants, so all you taste is cleaner, better water.

Culligan with ZeroWater Technology filters are certified to reduce over 25 contaminants, including forever chemicals (total PFAS), pharmaceuticals, and heavy metals. For the full list of what we reduce, see our performance results here.

Culligan with ZeroWater Technology reduces virtually all total dissolved solids (TDS) from your water, giving you a level of filtration comparable to reverse osmosis or distillation, but with none of the hassle.

ZeroWater Technology versus distilled water
Distillation boils water and collects the steam, leaving most dissolved solids behind, but the process takes hours and requires electricity. Culligan ZeroWater filters use deionization to reduce virtually all TDS in minutes, using just gravity. The result is similar purity, but with a fresher, more refreshing taste. No flat, boiled flavor here.

ZeroWater Technology versus reverse osmosis (RO)
Like Culligan with ZeroWater Technology filters, RO systems produce highly purified water, but they can be expensive and require installation. Culligan with ZeroWater Technology gives you similar results without the waste, hassle, or plumbing.

All Culligan with ZeroWater Technology products are made from BPA-free materials. Our filters are housed in BPA-free polystyrene. Our pitchers and dispensers are made with BPA-free polypropylene and ABS plastic.

We stand behind the quality of our products. Here’s what’s covered and how we’ll help if something’s not right.

Dispensers, Pitchers, and TDS Meters Limited Warranty

Zero Technologies, LLC warrants the Culligan ZeroWater Technology Dispenser, Pitcher, Bottle Filtration System, and TDS Meter to be free from manufacturing defects for 90 days from the date of purchase, when used in compliance with the Owner's Manual.

During this 90-day period, if you discover a manufacturing defect in your Culligan with ZeroWater Technology Dispenser, Pitcher, or TDS Meter (excluding the filter), we will replace the parts free of charge. To file a warranty claim, call 1-800-503-2939 or Contact Us. Dated proof of purchase is required.

Filter Cartridge Limited Warranty

Zero Technologies, LLC warrants its filters to be free from manufacturing defects for 30 days from the date of purchase, when used in compliance with the Owner's Manual. During this 30-day period, if you discover a manufacturing defect in your filter, we will replace it free of charge (minus shipping costs). Dated proof of purchase is required.

To place a claim for a defective filter, you must first call 1-800- 503-2939 and speak to customer service to trouble shoot the problem. If a potential manufacturing defect is identified, we will provide instructions on how to return the filter for laboratory testing. If the lab determines that the filter is defective, we will replace it free of charge. If no defect is found, your filter will be returned to you.

To see the difference for yourself, explore our updated performance data sheet.

Our latest pitchers and dispensers are thoughtfully redesigned for everyday ease, with upgraded features that make great-tasting water even easier to enjoy:

• Ergonomic handle for a more comfortable grip.
• Sliding lid for easy filling.
• Fully sealed top to prevent spills while pouring, even when full.
• No-drip spout for a clean, precise pour.
• Built-in TDS meter storage, so you always know your water quality.
• Space-saving design to fit perfectly in your fridge.

No. Our new filters were redesigned for simpler, top-down installation. They no longer twist in from the bottom like legacy ZeroWater filters. This change makes filter replacement easier and cleaner, but it does mean the new filters aren’t compatible with older devices.

Yes. Our 5-stage filter contains activated carbon derived from coconut shell. This environmentally friendly material serves as an effective and non-leaching agent in our filtration process, ensuring superior water filtration results compared to other alternatives.

Your filter’s lifespan will vary based on the TDS level of the water you’re filtering. Below is a breakdown of TDS ranges and their projected filter lifespan.

0-1
Meets FDA standards for TDS levels in purified bottled water. No known municipalities.
Expected filter duration: N/A

2-50
Naturally occurring in only a few cities, can still have dangerous impurities such as lead.
Expected filter duration: 40 gallons or more

51-200
TDS Levels within typical range. Most water in the USA falls into this grouping.
Expected filter duration: 25-40 gallons

201-300
High TDS level. Expect slightly lower capacity.
Expected filter duration: 15-25 gallons

301-400
High TDS level. Expect slightly lower capacity.
Expected filter duration: 8-15 gallons

400+
The highest TDS water. Expect lower capacity when reducing your water to 000.
Expected filter duration: 8 gallons or less