About Us

Company Info

About GC Water TReatment

About GC Water Treatment

GC Water Treatment is family owned and operated. My wife Janie and I started KGC Water Treatment to help people like you with your plumbing needs. Janie is the person behind the scenes that keeps the business sailing forward. I have over 15 years experience in residential plumbing, which includes 7 years in plumbing and the remainder in water treatment.

I have worked for other reputable plumbing service companies in the greater San Antonio, Texas area and gained a lot of knowledge and experience. If it were not for those plumbing companies that gave me the opportunity to work for them as well as the many professional plumbers that helped mentor me, I would not be able to run this company to the standard it is today. I look forward to helping you and it is our intent to ensure that you are taken care of properly because you are the reason we are in business today.

If you are looking for a plumber, please call (210) 896-4293 or complete our online contact form.

Our Work Flow


Discuss Project/Issue


Offer Job Proposal


Provide Quality Timely Service


See Happy Cutomer Smile


GC Water Treatment is family owned and operated

My wife and I started GC Water Treatment to help people like you with your plumbing needs. We have over 15 years experience in residential plumbing, which includes 5 years in plumbing services and the remainder in service water treatment.

What Our Clients Say

There are many happy customers

Melanie Canales

German Cortez from GC Water Treatment does wonderful work. Personable and professional. Quality equipment, reasonable prices. What more can you ask for? I highly recommend him. Thanks German.

Melanie Canales Verified Customer / Facebook.com
Nancy Green

We used German Cortez here in Hillcrest. Knowledgeable, reliable and pleased with the softness of the water. System maintains itself with very little intervention on our part.

Nancy Green Verified Customer / Facebook.com
Helene Bejger

GC Water treatment. He is very reasonable and good! 

Helene Bejger Verified Customer / Facebook.com
Dale Hardy
Excellent work, very professional, competitive prices. I'll definitely be using GC Water Treatment for my future plumbing needs. Thank you!
Dale Hardy Verified Customer / Facebook.com

Now offering 24/7 Professional Plumber & Quality H2O!

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We look forward to helping you and it is our intent to ensure that you are taken care of properly because you are the reason we are in business today.