Diamond Plumbing
Company Overview
As your reliable drain service in San Antonio, Diamond Plumbing is here for you. Our services are tailored for small businesses and include pipe and waste needs. Our mission is to deliver effective, expert, and friendly service to your home every time. If you require drain or sewer services in the Greater San Antonio area, select Diamond Plumbing.
Business Services
- Bathtub installation
- Bathtub repair
- Drain installation
- Drain repair
- Faucet installation
- Faucet repair
- Garbage disposal repair
- Gas line installation
- Gas line repair
- Hot water recirculation pump installation
- Hot water recirculation pump repair
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
- Sewer installation
- Sewer repair
- Shower installation
- Shower repair
- Sink installation
- Sink repair
- Sump pump installation
- Sump pump repair
- Toilet installation
- Toilet repair
- Water heater installation
- Water heater repair
- Water pipe installation
- Water pipe repair
Business Location & Hours
Mon: | 8:00 AM - 5:00 PM |
Tue: | 8:00 AM - 5:00 PM |
Wed: | 8:00 AM - 5:00 PM |
Thu: | 8:00 AM - 5:00 PM |
Fri: | 8:00 AM - 5:00 PM |
Sat: | Closed |
Sun: | Closed |
Recommended Customer Reviews

I purchased a new home and the warranty work for plumbing is done through Diamond Plumbing. I was having some issues and Austin with Diamond Plumbing was sent to my house. He called on his way prior to arrival. Don't let the young face fool you, he is super smart, experienced, and knows his stuff. He is very respectful and does a great job and fast! I had a toilet with a very weird leak and he solved it in no time and had a new tank on my toilet. I highly recommend Austin and while I don't want any other plumbing issues, I would be more than happy for Austin to fix any plumbing issues. Thank you!

Our family would like to give a 10 star STELLAR review to Diamond Plumbing, but especially for Jake. Jake communicated with his arrival, arrived exactly on time, and was one of the most professional technicians I have ever worked with. Very personable and kept us me updated with each step. I say this completely unbiased as I work for a custom home builder and deal with trades on a daily basis. Jake found the problem with the sink/hot water valve and had to go purchase the part. He came back and after installing, realized the new kitchen faucet was defective. He went the extra mile, removed and returned the faucet, purchase another one, and installed it. The fact that he made extra trips and worked without expressing any frustration: this guy is fantastic. I highly recommend Diamond Plumbing but I especially recommend Jake. Jake has completely restored our faith in quality service and complete respect for the customer. THANK YOU JAKE!!

The service was fine but the blatant harassment for a review is why I deducted a star.

Responded to my message very fast. Communication was clear and explained everything clearly. Did a great job with our plumbing issue. Would definitely use their services again as my first choice.

Have always had a good experience with them. They always make there appointment window and are flexible with additional questions and concerns.

These people had us waiting days then didn't show up. No call. I appreciate if people are busy. That said, they should have the decency to just say that. We called another plumber anyway. If they'd just communicated I wouldn't be so angry. Four nights in a hotel add up!

Diamond Plumbing has helped me out through a wide range of services including hydrostatic pressure tests to check pipes; repairing leaks and running toilets; and most recently, to repair a water heater to fix low hot-water pressure issues. Below are some points if you're considering them based on my experience.
PRO1: The office staff has always been kind, professional, and responsive to me. Yes, sometimes they are really busy and I'll get the voicemail, (esp. after the Extreme Winter Weather we recently experienced with many having pipe issues), but someone ALWAYS gets back to me... that's not the case with all businesses.
PRO2: They send a text when technicians are on their way with a picture of who's coming as well as a tracker. I also have an opportunity to rate my experience afterward conveniently through text.
PRO3: They offer Military Discounts. I admire this and can't thank businesses enough who decide to honor Veterans in this way. It speaks volumes about the values of a company. May they thrive 100 times more!
CON: They are not open after-hours including weekends. This can be an issue during an emergency, but I also respect that they have dedicated off days and rest for themselves and their employees. It's just something I have to consider when I have a need that requires after-hours.
In conclusion, they are my go-to during normal business hours; I've been serviced by Diamond Plumbing about 8 times now and I'm still a very happy customer. I HIGHLY RECOMMEND Diamond Plumbing.

Can't say enough good things about them. They showed up when they said they would, fixed the problem quickly and were very reasonable. They are my new "go to" plumbers+

My niece had been experiencing water pressure issues for years but, being in her early 20s, didn't have a clue what the problem was. A plumber she had used a couple of years before told her the neighborhood had low water pressure so there wasn't much she could do.
I called them in the morning and they sent Rocky out by that afternoon. He easily could have taken her for a ride and told her that it was something complicated and expensive, yet was honest and told her that her aerator was clogged due to hard water. He cleaned it out and immediately the water pressure improved.
She also hadn't been able to use her dishwasher and he quickly resolved that minor issue as well.
He explained how to take care of her water softener so she wouldn't have issues in the future. He made sure she had no questions and no further issues in the home, allowing her all the time she needed to ensure everything was taken care of to her satisfaction.
The rate was so reasonable and my niece was thrilled that everything in the home was finally taken care of and would now be able to use both her kitchen sink and dishwasher without any further issues.
I would highly recommend them without any hesitation and will gladly use them in the future!!

On time, received text updates and a photo before hand of the plumber coming to service. Rocky was polite, efficient, and fixed a few minor things in the closet in addition to the water heater install job. Hauled the old tank away and left the area clean. Price quoted was fair and even offered a military discount. Thanks!