250 Deionizing Water Filter System
- Ultra-pure water on demand
The 250 delivers high-purity process water free of dissolved solids, minerals, salts, and other impurities, eliminating the need for delivered bottled distilled water or on-site steam distillers. - Built for demanding applications
Deionized water is often called for in dental labs, optical labs, pharmacies, and food-processing operations, and as a rinse agent, because it leaves absolutely no salts or minerals behind. - Compact, expandable design
A space-saving under-sink installation with a gooseneck spigot makes container filling easy, and you can add an optional countertop or free-standing filtered drinking water cooler to the system.
26-50 Users 
Ambient 
Free and no obligation quote 
Local support from a full-service expert 
No bottles, no bottle fees Technologies and filtration
The 250 uses a four-stage purification process, combining sediment filtration to 5 microns, a pre-carbon filter, reverse osmosis, and deionization with ion-exchange technology, to deliver ultra-pure water free of dissolved solids, minerals, salts, and other impurities.
Dimensions and specifications
Included in your subscription
The simple, easy water solution.
Save money
Enjoy customizable water solutions that fit your needs and your budget. Our monthly fee covers everything — no surprises or extra charges. Ever.
Save time
From consultation to maintenance, we’ve got you covered with national coverage and a dedicated contact person to manage your water needs, giving you more time to focus on your business.
Save plastic
Enjoy safer, great-tasting water while contributing to a more sustainable future, free from single-use plastic water bottles.
Installation & Maintenance
Simple setup. Seamless support.
Seamless installation.
From quick delivery to expert setup, we handle everything. Our professional installation is typically completed in an hour or less, so you can enjoy pure water right away.
Full national coverage.
We take care of everything from your first consultation to routine maintenance, so you can focus on what matters most — your business.
Ongoing support.
With our expert team always on standby, enjoy set-it-and-forget-it simplicity with responsive support whenever you need.
An industry leader.
Culligan Quench leads the industry in providing bottleless water solutions, offering superior service and sustainable options compared to traditional water delivery services.
Reviews and questions
Discover how Culligan Quench customers are using and enjoying this product. Share your feedback or ask a question, and our team will follow up with an answer.
Frequently asked questions
What is deionized water used for?
Deionized water is often called for in dental labs, optical labs, pharmacies, and food-processing operations, and as a rinse agent, because it leaves absolutely no salts or minerals behind.
How does the 250 purify water?
It uses a four-stage process: sediment filtration to 5 microns removes particles, a pre-carbon filter removes chemicals, reverse osmosis removes elements up to 1/500,000th of an inch, and a deionization process with ion-exchange technology removes minerals, salts, and other impurities.
How is deionized water different from RO water?
Reverse osmosis removes most dissolved solids, while the added deionization stage uses ion-exchange technology to remove remaining minerals and salts, producing higher-purity water suited for lab and process applications.
Can the 250 also provide drinking water?
Yes. You can add an optional filtered drinking water cooler, available as a countertop or free-standing model, to the system.
What are the pre-installation requirements for the 250?
The system installs compactly under the sink and requires a water supply and a drain. Your local Culligan Quench expert can confirm the details before installation.
Does the 250 eliminate the need for bottled distilled water?
Yes. The 250 provides pure water on demand, eliminating the need for delivered bottled distilled water or on-site steam water distillers.
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