Always enjoy doing business with Bud. Super easy to work with, reliable, on time, and always gets…read morethe job done. He's been helping me with backflow testing for three years in a row now. No complaints! I plan on continuing his service for future needs. Thanks Bud!

Very nice guy! Tested the backflow and answered all my questions. Will definitely use him again if…read moreneeded.

I would highly recommend Neptali/GCS Backflow Services. Although he was not able to complete the…read morework I needed done, he was thorough, patient, and provided an exhaustive list of solutions and alternatives. He responded to request for quote quickly and was out the next day. I would definitely recommend GCS Backflow!

From the owner: GCS Backflow inspects, repairs and certifies backflow assemblies utilizing experienced, TCEQ…read morelicensed professionals. We provide the following services: new installation certifications, annual compliance re-certifications, and device troubleshooting and repairs. We focus on the certification of backflow prevention devices for homeowners, landscapers, plumbers, builders, and business owners. Proper backflow prevention device testing and maintenance is essential for compliance to regulations as well as avoiding costs incurred due to a faulty backflow device. GCS makes it easy for you to stay compliant. Call today and see why GCS stands for Great Customer Service.

I've had backflow testing with 4 different companies over 25 years. I have to declare that TP…read moreBackflow Testing Inc. is the BEST EVER!! So mad I didn't find him earlier. Mr. Phan was very timely, efficient, knowledgeable, and responsive. What's more amazing is his price! Wow! Couldn't ask for a more stress-free, wonderful experience. Whenever I see the initials T.P., I used to think of toothpaste (we are a dental office). But now when I see T.P. or TP, I think of Tan Phan! Tan Phan is the Man!! Call him! You won't regret it! (P.S. No, I'm not his friend or related to him in any way)

Have used them a couple of times. Always reliable and honest! Shows when they say the will and…read moreafter being quoted much more to fix one zone by another company, Dan charged about half to do the same thing!! Will definitely use again.

Work was completed in a timely manner and exactly as agreed upon. Professional with excellent…read morecustomer service!!! I highly recommend!

Quick and professional with all communication and installation. They did an amazing job: looks and…read moreworks great. Would recommend to anyone.

5 stars indeed! Very professional and friendly…read more I would definitely recommend calling them if you have any plumbing problems.

Great service. Good work. Fair pricing- right in the middle. Quick response and communication…read more Appreciate that he was thorough and took the time to explain what was going on. Snaked my drain pipe and cleared out the roots.