Commercial and Industrial Water Treatment

With the support of the entire Culligan International organization and experience in your local market, you will have the best solutions to meet your commercial and industrial water needs.

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Culligan of San Marcos provides commercial & industrial water treatment across numerous industries & applications:

  • C&I Reverse Osmosis
  • C&I Water Softeners
  • C&I Depth Filters
  • C&I Carbon Filters
  • Deionized Tank Exchange

Every commercial water treatment application, whether for a restaurant, hospital, hotel or office is unique. Call or use the contact form to tell us about your water needs.

We can be of service with many industrial applications including High-purity, Deionized, De-mineralized, Lab-grade, and Medical-grade water.


Deionized Water Service, often referred to as “Portable Exchange Deionization” (PEDI), uses tanks containing deionization resin plumbed into your water lines with quick-connect connectors and exchanged as-needed by fresh tanks. This way you have minimal up-front investment by eliminating complicated plumbing and installation and you’re only paying for the high-purity water that you need.

Every application for Ultrapure or Deionized water is unique so please call or use the contact form to let us know more about your water

What our clients say

Joseph Furtado
Joseph Furtado
21:41 19 Aug 23
We finally decided to get a water-softener and whole house filtration system about 3.5 years after moving into our new home un San Marcos. We interviewed several companies and decided to go with Culligan Water. Jerry came out to test our water and was very friendly and knowledgeable. We also opted for the under sink RO filtration for food and drinking water. Culligan is a full service company that stands behind its products. We can count on their being there for us when we need them, including salt delivery and 10 point inspection every three months (for a small fee and cost of salt). Chris and Zach were very polite and did a great job of installing and explaining our system and how it worked. They even worked in the very hot attic on a very hot day to connect the plumbing, including running a connection to the drain in the laundry room. At the completion of the installation they made sure every thing worked well and that there were no leeks. And cleaned up everything really well. Overall and A+ job by Culligan and its crew!culligan
Kent Perrine
Kent Perrine
19:29 09 Aug 23
My experience with Zach and Kevin was excellent. They are very professional, respectful and strived for a quality installation. They made sure to clean up the worksite before leaving. The quality of your employees reflects on the quality of your company and earns you the great reputation you have.
Haley Malatek
Haley Malatek
16:42 11 May 23
Had an excellent experience with Ethan and Zach as they educated us and installed our new soft water system. Excellent customer service!

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World's Most Efficient Culligan Smart HE RO Drinking Water System 100% Satisfaction Guarantee Worlds most efficient NSF Certification | Culligan of San Marcos UL Certified Company in San Marcos, Kyle, Buda, Lockhart, Dripping Springs Water Quality Association Tested and Certified Under Industry Standards Rated & Reviewed HomeAdvisor Pro