Commercial & Industrial
Deionized Water Treatment

Deionized (DI) water is water that has had dissolved mineral ions (such as calcium, sodium, iron, copper, and chloride) removed through ion exchange resins. The process of deionization removes ions from water using ion exchange resins. It produces highly purified water by attracting and removing positively and negatively charged ions, making it useful in industries like electronics and pharmaceuticals.

Resin life depends on incoming water quality and usage volume. Culligan technicians monitor and exchange tanks as needed to ensure continuous water purity.

Running a DI water system requires more than just the equipment itself. Costs include the upfront system investment, replacement of consumables such as resins and filters, energy use, water consumption, and waste disposal. You’ll also need to account for maintenance, repairs, labor, and the handling of regeneration byproducts. Careful cost management and system optimization help ensure consistent, high-quality water production while keeping operating expenses under control.

Maintaining a DI water system involves regular monitoring of water quality, periodic regeneration or replacement of ion exchange resins, pre-filtration to remove contaminants, system flushing, sanitization to prevent bacterial growth, and regular maintenance checks of system components.

Culligan DI systems can achieve effluent water resistivity up to 18 megohm-cm, depending on system design.

If your processes require water that is free of dissolved minerals or salts, a DI system is often the best solution. Industries like healthcare, labs, electronics, and food processing rely on DI because even small amounts of minerals can cause equipment damage, product defects, or compliance issues. A Culligan water expert can test your water and recommend whether DI is the right fit.

Culligan DI systems are designed to scale. You can start with a single tank or small setup, and we can add additional tanks or reconfigure your system as your operation expands. This flexibility means you won’t outgrow your water treatment solution.

No. DI water is not intended for drinking or cooking because the ion exchange process strips out essential minerals. It is strictly used for industrial, commercial, and laboratory applications where high-purity water is required.

Culligan provides local service and rapid tank exchange throughout the Dallas–Fort Worth area. In most cases, exchanges are scheduled proactively so your business never experiences downtime. Emergency service is also available when needed.

Yes. Culligan’s portable exchange DI systems eliminate on-site chemical handling and wastewater disposal. Spent resins are regenerated at a licensed Culligan facility, with metals safely recovered and recycled — helping businesses meet environmental regulations while reducing liability.

Any operation that requires consistent, mineral-free water can benefit from DI tanks. Common examples include labs, hospitals, semiconductor manufacturers, food and beverage processors, automotive plants, and power generation facilities. Even small businesses like dental offices and research labs often rely on DI water for reliable results and compliance.